251
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Bolotov IN, Konopleva ES, Vikhrev IV, Gofarov MY, Lopes-Lima M, Bogan AE, Lunn Z, Chan N, Win T, Aksenova OV, Tomilova AA, Tanmuangpak K, Tumpeesuwan S, Kondakov AV. New freshwater mussel taxa discoveries clarify biogeographic division of Southeast Asia. Sci Rep 2020; 10:6616. [PMID: 32313058 PMCID: PMC7171101 DOI: 10.1038/s41598-020-63612-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 03/31/2020] [Indexed: 01/22/2023] Open
Abstract
While a growing body of modern phylogenetic research reveals that the Western Indochina represents a separate biogeographic subregion having a largely endemic freshwater fauna, the boundaries of this subregion are still unclear. We use freshwater mussels (Unionidae) as a model to reconstruct spatial patterns of freshwater biogeographic divides throughout Asia. Here, we present an updated freshwater biogeographic division of mainland Southeast Asia and describe 12 species and 4 genera of freshwater mussels new to science. We show that the Isthmus of Kra represents a significant southern biogeographic barrier between freshwater mussel faunas of the Western Indochina and Sundaland subregions, while the Indian and Western Indochina subregions are separated by the Naga Hills, Chin Hills, and Rakhine Yoma mountain ranges. Our findings highlight that the freshwater bivalve fauna of Southeast Asia primarily originated within three evolutionary hotspots (Western Indochina, Sundaland, and East Asian) supplemented by ancient immigrants from the Indian Subcontinent.
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Affiliation(s)
- Ivan N Bolotov
- Northern Arctic Federal University, Northern Dvina Emb. 17, 163002, Arkhangelsk, Russian Federation.
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russian Federation.
| | - Ekaterina S Konopleva
- Northern Arctic Federal University, Northern Dvina Emb. 17, 163002, Arkhangelsk, Russian Federation
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russian Federation
| | - Ilya V Vikhrev
- Northern Arctic Federal University, Northern Dvina Emb. 17, 163002, Arkhangelsk, Russian Federation
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russian Federation
| | - Mikhail Yu Gofarov
- Northern Arctic Federal University, Northern Dvina Emb. 17, 163002, Arkhangelsk, Russian Federation
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russian Federation
| | - Manuel Lopes-Lima
- CIBIO/InBIO - Research Center in Biodiversity and Genetic Resources, University of Porto, Campus Agrário de Vairão, Rua Padre Armando Quintas 7, 4485-661, Vairão, Portugal
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
- SSC/IUCN - Mollusc Specialist Group, Species Survival Commission, International Union for Conservation of Nature, c/o The David Attenborough Building, Pembroke Street, CB2 3QZ, Cambridge, United Kingdom
| | - Arthur E Bogan
- North Carolina Museum of Natural Sciences, 11 West Jones St., Raleigh, NC, 27601, USA
| | - Zau Lunn
- Fauna & Flora International - Myanmar Programme, Yangon, Myanmar
| | - Nyein Chan
- Fauna & Flora International - Myanmar Programme, Yangon, Myanmar
| | - Than Win
- Department of Zoology, Dawei University, Dawei, Tanintharyi Region, Myanmar
| | - Olga V Aksenova
- Northern Arctic Federal University, Northern Dvina Emb. 17, 163002, Arkhangelsk, Russian Federation
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russian Federation
| | - Alena A Tomilova
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russian Federation
| | - Kitti Tanmuangpak
- Department of Science, Faculty of Science and Technology, Loei Rajabhat University, Loei, Thailand
| | - Sakboworn Tumpeesuwan
- Department of Biology, Faculty of Science, Mahasarakham University, Maha Sarakham, Thailand
| | - Alexander V Kondakov
- Northern Arctic Federal University, Northern Dvina Emb. 17, 163002, Arkhangelsk, Russian Federation
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russian Federation
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252
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Limmon G, Delrieu-Trottin E, Patikawa J, Rijoly F, Dahruddin H, Busson F, Steinke D, Hubert N. Assessing species diversity of Coral Triangle artisanal fisheries: A DNA barcode reference library for the shore fishes retailed at Ambon harbor (Indonesia). Ecol Evol 2020; 10:3356-3366. [PMID: 32273993 PMCID: PMC7141007 DOI: 10.1002/ece3.6128] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/30/2020] [Accepted: 02/03/2020] [Indexed: 01/01/2023] Open
Abstract
The Coral Triangle (CT), a region spanning across Indonesia and Philippines, is home to about 4,350 marine fish species and is among the world's most emblematic regions in terms of conservation. Threatened by overfishing and oceans warming, the CT fisheries have faced drastic declines over the last decades. Usually monitored through a biomass-based approach, fisheries trends have rarely been characterized at the species level due to the high number of taxa involved and the difficulty to accurately and routinely identify individuals to the species level. Biomass, however, is a poor proxy of species richness, and automated methods of species identification are required to move beyond biomass-based approaches. Recent meta-analyses have demonstrated that species richness peaks at intermediary levels of biomass. Consequently, preserving biomass is not equal to preserving biodiversity. We present the results of a survey to estimate the shore fish diversity retailed at the harbor of Ambon Island, an island located at the center of the CT that display exceptionally high biomass despite high levels of threat, while building a DNA barcode reference library of CT shore fishes targeted by artisanal fisheries. We sampled 1,187 specimens and successfully barcoded 696 of the 760 selected specimens that represent 202 species. Our results show that DNA barcodes were effective in capturing species boundaries for 96% of the species examined, which opens new perspectives for the routine monitoring of the CT fisheries.
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Affiliation(s)
- Gino Limmon
- Pusat Kemaritiman dan Kelautan Universitas Pattimura (Maritime and Marine Science Center of Excellence) Ambon Indonesia
| | - Erwan Delrieu-Trottin
- Institut de Recherche pour le Développement UMR 226 ISEM (UM-CNRS-IRD-EPHE) Montpellier France
- Museum für Naturkunde Leibniz-Institut für Evolutions-und Biodiversitätsforschung an der Humboldt-Universität zu Berlin Berlin Germany
| | - Jesaya Patikawa
- Pusat Kemaritiman dan Kelautan Universitas Pattimura (Maritime and Marine Science Center of Excellence) Ambon Indonesia
| | - Frederik Rijoly
- Pusat Kemaritiman dan Kelautan Universitas Pattimura (Maritime and Marine Science Center of Excellence) Ambon Indonesia
| | - Hadi Dahruddin
- Division of Zoology Research Center for Biology Indonesian Institute of Sciences (LIPI) Cibinong Indonesia
| | - Frédéric Busson
- Institut de Recherche pour le Développement UMR 226 ISEM (UM-CNRS-IRD-EPHE) Montpellier France
- UMR 7208 BOREA (MNHN-CNRS-UPMC-IRD-UCBN) Muséum National d'Histoire Naturelle Paris France
| | - Dirk Steinke
- Department of Integrative Biology Centre for Biodiversity Genomics University of Guelph Guelph ON Canada
| | - Nicolas Hubert
- Institut de Recherche pour le Développement UMR 226 ISEM (UM-CNRS-IRD-EPHE) Montpellier France
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253
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Sholihah A, Delrieu-Trottin E, Sukmono T, Dahruddin H, Risdawati R, Elvyra R, Wibowo A, Kustiati K, Busson F, Sauri S, Nurhaman U, Dounias E, Zein MSA, Fitriana Y, Utama IV, Muchlisin ZA, Agnèse JF, Hanner R, Wowor D, Steinke D, Keith P, Rüber L, Hubert N. Disentangling the taxonomy of the subfamily Rasborinae (Cypriniformes, Danionidae) in Sundaland using DNA barcodes. Sci Rep 2020; 10:2818. [PMID: 32071342 PMCID: PMC7028728 DOI: 10.1038/s41598-020-59544-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 01/20/2020] [Indexed: 11/25/2022] Open
Abstract
Sundaland constitutes one of the largest and most threatened biodiversity hotspots; however, our understanding of its biodiversity is afflicted by knowledge gaps in taxonomy and distribution patterns. The subfamily Rasborinae is the most diversified group of freshwater fishes in Sundaland. Uncertainties in their taxonomy and systematics have constrained its use as a model in evolutionary studies. Here, we established a DNA barcode reference library of the Rasborinae in Sundaland to examine species boundaries and range distributions through DNA-based species delimitation methods. A checklist of the Rasborinae of Sundaland was compiled based on online catalogs and used to estimate the taxonomic coverage of the present study. We generated a total of 991 DNA barcodes from 189 sampling sites in Sundaland. Together with 106 previously published sequences, we subsequently assembled a reference library of 1097 sequences that covers 65 taxa, including 61 of the 79 known Rasborinae species of Sundaland. Our library indicates that Rasborinae species are defined by distinct molecular lineages that are captured by species delimitation methods. A large overlap between intraspecific and interspecific genetic distance is observed that can be explained by the large amounts of cryptic diversity as evidenced by the 166 Operational Taxonomic Units detected. Implications for the evolutionary dynamics of species diversification are discussed.
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Affiliation(s)
- Arni Sholihah
- Instut Teknologi Bandung, School of Life Sciences and Technology, Bandung, Indonesia.,UMR 5554 ISEM (IRD, UM, CNRS, EPHE), Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, cedex, 05, France
| | - Erwan Delrieu-Trottin
- UMR 5554 ISEM (IRD, UM, CNRS, EPHE), Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, cedex, 05, France.,Museum für Naturkunde, Leibniz-Institut für Evolutions und Biodiversitätsforschung an der Humboldt-Universität zu Berlin, Invalidenstrasse 43, Berlin, 10115, Germany
| | - Tedjo Sukmono
- Universitas Jambi, Department of Biology, Jalan Lintas Jambi - Muara Bulian Km15, 36122, Jambi, Sumatra, Indonesia
| | - Hadi Dahruddin
- UMR 5554 ISEM (IRD, UM, CNRS, EPHE), Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, cedex, 05, France.,Division of Zoology, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jalan Raya Jakarta Bogor Km 46, Cibinong, 16911, Indonesia
| | - Renny Risdawati
- Department of Biology Education, STKIP PGRI Sumatera Barat, Jl Gunung Pangilun, Padang, 25137, Indonesia
| | - Roza Elvyra
- Universitas Riau, Department of Biology, Simpang Baru, Tampan, Pekanbaru, 28293, Indonesia
| | - Arif Wibowo
- Southeast Asian Fisheries Development Center, Inland Fisheries Resources Development and Management Department, 8 Ulu, Seberang Ulu I, Palembang, 30267, Indonesia.,Research Institute for Inland Fisheries and Fisheries extensions, Agency for Marine and Fisheries Research, Ministry of Marine Affairs and Fisheries., Jl. H.A. Bastari No. 08, Jakabaring, Palembang, 30267, Indonesia
| | - Kustiati Kustiati
- Universitas Tanjungpura, Department of Biology, Jalan Prof. Dr. H. Hadari Nawawi, Pontianak, 78124, Indonesia
| | - Frédéric Busson
- UMR 5554 ISEM (IRD, UM, CNRS, EPHE), Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, cedex, 05, France.,UMR 7208 BOREA (MNHN-CNRS-UPMC-IRD-UCBN), Muséum National d'Histoire Naturelle, 43 rue Cuvier, 75231, Paris, cedex, 05, France
| | - Sopian Sauri
- Division of Zoology, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jalan Raya Jakarta Bogor Km 46, Cibinong, 16911, Indonesia
| | - Ujang Nurhaman
- Division of Zoology, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jalan Raya Jakarta Bogor Km 46, Cibinong, 16911, Indonesia
| | - Edmond Dounias
- UMR 5175 CEFE (IRD, UM, CNRS, EPHE), 1919 route de Mende, 34293, Montpellier, cedex, 05, France
| | - Muhamad Syamsul Arifin Zein
- Division of Zoology, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jalan Raya Jakarta Bogor Km 46, Cibinong, 16911, Indonesia
| | - Yuli Fitriana
- Division of Zoology, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jalan Raya Jakarta Bogor Km 46, Cibinong, 16911, Indonesia
| | - Ilham Vemendra Utama
- Division of Zoology, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jalan Raya Jakarta Bogor Km 46, Cibinong, 16911, Indonesia
| | | | - Jean-François Agnèse
- UMR 5554 ISEM (IRD, UM, CNRS, EPHE), Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, cedex, 05, France
| | - Robert Hanner
- Department of Integrative Biology, Centre for Biodiversity Genomics, 50 Stone Rd E, Guelph, ON, N1G2W1, Canada
| | - Daisy Wowor
- Division of Zoology, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jalan Raya Jakarta Bogor Km 46, Cibinong, 16911, Indonesia
| | - Dirk Steinke
- Department of Integrative Biology, Centre for Biodiversity Genomics, 50 Stone Rd E, Guelph, ON, N1G2W1, Canada
| | - Philippe Keith
- UMR 7208 BOREA (MNHN-CNRS-UPMC-IRD-UCBN), Muséum National d'Histoire Naturelle, 43 rue Cuvier, 75231, Paris, cedex, 05, France
| | - Lukas Rüber
- Naturhistorisches Museum Bern, Bernastrasse 15, Bern, 3005, Switzerland.,Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, 3012, Bern, Switzerland
| | - Nicolas Hubert
- UMR 5554 ISEM (IRD, UM, CNRS, EPHE), Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, cedex, 05, France.
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254
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Garces JM, Sartori M, Freitag H. Integrative taxonomy of the genus Dudgeodes Sartori, 2008 (Insecta, Ephemeroptera, Teloganodidae) from the Philippines with description of new species and supplementary descriptions of Southeast Asian species. Zookeys 2020; 910:93-129. [PMID: 32099517 PMCID: PMC7026199 DOI: 10.3897/zookeys.910.48659] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 01/05/2020] [Indexed: 11/12/2022] Open
Abstract
COI sequences were used as an initial clustering method to delimit putative species of the genus Dudgeodes in the Philippines. An overview of the diagnostic characters of Philippine species and characters with high intraspecific variability are given. Six new species of Dudgeodes are described and illustrated: D. bauernfeindi Garces & Sartori, sp. nov., D. freitagi Garces & Sartori, sp. nov., D. luntian Garces & Sartori, sp. nov., D. pangantihoni Garces & Sartori, sp. nov., D. tabang Garces & Sartori, sp. nov., and D. vonrinteleni Garces & Sartori, sp. nov., all known from the nymphal stage. Supplementary descriptions are provided for D. pescadori Sartori, 2008, D. hutanis Sartori, 2008, D. stephani Sartori, 2008, D. ulmeri Sartori, 2008, and D. celebensis Sartori, 2008. A key to the nymphs of Philippine Dudgeodes species is proposed.
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Affiliation(s)
- Jhoana M. Garces
- Department of Biology, School of Science and Engineering, Ateneo de Manila University, Quezon City, PhilippinesAteneo de Manila UniversityQuezon CityPhilippines
| | - Michel Sartori
- Museum of Zoology, Palais de Rumine, Place Riponne 6, CH-1014 Lausanne, SwitzerlandMuseum of ZoologyLausanneSwitzerland
- Department of Ecology and Evolution, Biophore, University of Lausanne, CH-1015 Lausanne, SwitzerlandUniversity of LausanneLausanneSwitzerland
| | - Hendrik Freitag
- Department of Biology, School of Science and Engineering, Ateneo de Manila University, Quezon City, PhilippinesAteneo de Manila UniversityQuezon CityPhilippines
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255
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Integrative systematics and ecology of a new deep-sea family of tanaidacean crustaceans. Sci Rep 2019; 9:18720. [PMID: 31822695 PMCID: PMC6904764 DOI: 10.1038/s41598-019-53446-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 10/31/2019] [Indexed: 11/10/2022] Open
Abstract
A new family of paratanaoidean Tanaidacea – Paranarthrurellidae fam. nov. – is erected to accommodate two genera without family classification (Paratanaoidea incertae sedis), namely Armatognathia Kudinova-Pasternak, 1987 and Paranarthrurella Lang, 1971. Seven new species of Paranarthrurella and two of Armatognathia are described from material taken in different deep-sea areas of the Atlantic and Pacific oceans. The type species of Paranarthrurella — P. caudata (Kudinova-Pasternak, 1965) — is redescribed based on the paratype. The genus Cheliasetosatanais Larsen and Araújo-Silva, 2014 originally classified within Colletteidae is synonymised with Paranarthrurella, and Arthrura shiinoi Kudinova-Pasternak, 1973 is transferred to Armatognathia. Amended diagnoses of Armatognathia and Paranarthrurella genera are given. Choosing characters for distinguishing and defining both genera was supported by Principal Component Analysis. Designation of the new family is supported by molecular phylogenetic analysis of COI and 18S datasets. The distribution of all species currently included in the new family was visualised and their bathymetric distribution analysed.
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256
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Srivathsan A, Hartop E, Puniamoorthy J, Lee WT, Kutty SN, Kurina O, Meier R. Rapid, large-scale species discovery in hyperdiverse taxa using 1D MinION sequencing. BMC Biol 2019; 17:96. [PMID: 31783752 PMCID: PMC6884855 DOI: 10.1186/s12915-019-0706-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 10/09/2019] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND More than 80% of all animal species remain unknown to science. Most of these species live in the tropics and belong to animal taxa that combine small body size with high specimen abundance and large species richness. For such clades, using morphology for species discovery is slow because large numbers of specimens must be sorted based on detailed microscopic investigations. Fortunately, species discovery could be greatly accelerated if DNA sequences could be used for sorting specimens to species. Morphological verification of such "molecular operational taxonomic units" (mOTUs) could then be based on dissection of a small subset of specimens. However, this approach requires cost-effective and low-tech DNA barcoding techniques because well-equipped, well-funded molecular laboratories are not readily available in many biodiverse countries. RESULTS We here document how MinION sequencing can be used for large-scale species discovery in a specimen- and species-rich taxon like the hyperdiverse fly family Phoridae (Diptera). We sequenced 7059 specimens collected in a single Malaise trap in Kibale National Park, Uganda, over the short period of 8 weeks. We discovered > 650 species which exceeds the number of phorid species currently described for the entire Afrotropical region. The barcodes were obtained using an improved low-cost MinION pipeline that increased the barcoding capacity sevenfold from 500 to 3500 barcodes per flowcell. This was achieved by adopting 1D sequencing, resequencing weak amplicons on a used flowcell, and improving demultiplexing. Comparison with Illumina data revealed that the MinION barcodes were very accurate (99.99% accuracy, 0.46% Ns) and thus yielded very similar species units (match ratio 0.991). Morphological examination of 100 mOTUs also confirmed good congruence with morphology (93% of mOTUs; > 99% of specimens) and revealed that 90% of the putative species belong to the neglected, megadiverse genus Megaselia. We demonstrate for one Megaselia species how the molecular data can guide the description of a new species (Megaselia sepsioides sp. nov.). CONCLUSIONS We document that one field site in Africa can be home to an estimated 1000 species of phorids and speculate that the Afrotropical diversity could exceed 200,000 species. We furthermore conclude that low-cost MinION sequencers are very suitable for reliable, rapid, and large-scale species discovery in hyperdiverse taxa. MinION sequencing could quickly reveal the extent of the unknown diversity and is especially suitable for biodiverse countries with limited access to capital-intensive sequencing facilities.
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Affiliation(s)
- Amrita Srivathsan
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, Singapore
| | - Emily Hartop
- Zoology Department, Stockholms Universitet, Stockholm, Sweden
- Station Linné, Öland, Sweden
| | - Jayanthi Puniamoorthy
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, Singapore
| | - Wan Ting Lee
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, Singapore
| | - Sujatha Narayanan Kutty
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, Singapore
- Tropical Marine Science Institute, National University of Singapore, Singapore, Singapore
| | - Olavi Kurina
- Estonian University of Life Sciences, Kreutzwaldi 5D, Tartu, Estonia
| | - Rudolf Meier
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, Singapore.
- Tropical Marine Science Institute, National University of Singapore, Singapore, Singapore.
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257
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Valdez-Mondragón A, Navarro-Rodríguez CI, Solís-Catalán KP, Cortez-Roldán MR, Juárez-Sánchez AR. Under an integrative taxonomic approach: the description of a new species of the genus Loxosceles (Araneae, Sicariidae) from Mexico City. Zookeys 2019; 892:93-133. [PMID: 31824205 PMCID: PMC6892964 DOI: 10.3897/zookeys.892.39558] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/04/2019] [Indexed: 10/31/2022] Open
Abstract
A new species of the spider genus Loxosceles Heineken & Lowe, 1832, Loxosceles tenochtitlan Valdez-Mondragón & Navarro-Rodríguez, sp. nov., is described based on adult male and female specimens from the states of Mexico City, Estado de Mexico and Tlaxcala. Integrative taxonomy including traditional morphology, geometric and lineal morphology, and molecules (DNA barcodes of cytochrome c oxidase subunit 1 (CO1) and internal transcribed spacer 2 (ITS2)), were used as evidence to delimit the new species. Four methods were used for molecular analyses and species delimitation: 1) corrected p-distances under neighbor joining (NJ), 2) automatic barcode gap discovery (ABGD), 3) general mixed yule coalescent model (GMYC), and 4) poisson tree processes (bPTP). All molecular methods, traditional, geometric and lineal morphology were consistent in delimiting and recognizing the new species. Loxosceles tenochtitlan sp. nov. is closely related to L. misteca based on molecular data. Although both species are morphologically similar, the average p-distance from CO1 data was 13.8% and 4.2% for ITS2 data. The molecular species delimitation methods recovered well-supported monophyletic clusters for samples of L. tenochtitlan sp. nov. from Mexico City + Tlaxcala and for samples of L. misteca from Guerrero. Loxosceles tenochtitlan sp. nov. is considered a unique species for three reasons: (1) it can be distinguished by morphological characters (genitalic and somatic); (2) the four different molecular species delimitation methods were congruent to separate both species; and (3) there is variation in leg I length of males between both species, with the males of L. misteca having longer legs than males of L. tenochtitlan sp. nov., also morphometrically, the shape of tibiae of the palp between males of both species is different.
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Affiliation(s)
- Alejandro Valdez-Mondragón
- CONACYT Research Fellow. Laboratory of Arachnology (LATLAX), Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales (LBCTV), Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), sede Tlaxcala, Ex-Fábrica San Manuel, San Miguel Contla, C. P. 90640 Santa Cruz Tlaxcala, Tlaxcala, Mexico.,Colección Nacional de Arácnidos (CNAN), Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, (UNAM), Ciudad Universitaria, Apartado Postal 04510, Coyoacán, Mexico City, Mexico
| | - Claudia I Navarro-Rodríguez
- Laboratory of Arachnology (LATLAX), Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales (LBCTV), Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), sede Tlaxcala, Mexico.,Posgrado en Ciencias Biológicas, Centro Tlaxcala de Biología de la Conducta (CTBC), Universidad Autónoma de Tlaxcala (UATx), Carretera Federal Tlaxcala-Puebla, Km. 1.5, C. P. 90062, Tlaxcala, Tlaxcala, Mexico
| | - Karen P Solís-Catalán
- Laboratory of Arachnology (LATLAX), Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales (LBCTV), Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), sede Tlaxcala, Mexico.,Posgrado en Ciencias Biológicas, Centro Tlaxcala de Biología de la Conducta (CTBC), Universidad Autónoma de Tlaxcala (UATx), Carretera Federal Tlaxcala-Puebla, Km. 1.5, C. P. 90062, Tlaxcala, Tlaxcala, Mexico
| | - Mayra R Cortez-Roldán
- Laboratory of Arachnology (LATLAX), Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales (LBCTV), Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), sede Tlaxcala, Mexico
| | - Alma R Juárez-Sánchez
- Laboratory of Arachnology (LATLAX), Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales (LBCTV), Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), sede Tlaxcala, Mexico
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258
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Bolotov IN, Klass AL, Kondakov AV, Vikhrev IV, Bespalaya YV, Gofarov MY, Filippov BY, Bogan AE, Lopes-Lima M, Lunn Z, Chan N, Aksenova OV, Dvoryankin GA, Chapurina YE, Kim SK, Kolosova YS, Konopleva ES, Lee JH, Makhrov AA, Palatov DM, Sayenko EM, Spitsyn VM, Sokolova SE, Tomilova AA, Win T, Zubrii NA, Vinarski MV. Freshwater mussels house a diverse mussel-associated leech assemblage. Sci Rep 2019; 9:16449. [PMID: 31712612 PMCID: PMC6848535 DOI: 10.1038/s41598-019-52688-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 10/18/2019] [Indexed: 01/26/2023] Open
Abstract
Freshwater mussels (Unionida) are one of the most imperiled animal groups worldwide, revealing the fastest rates of extinction. Habitat degradation, river pollution and climate change are the primary causes of global decline. However, biological threats for freshwater mussels are still poorly known. Here, we describe a diverse ecological group of leeches (Hirudinea: Glossiphoniidae) inhabiting the mantle cavity of freshwater mussels. So far, examples of mussel-associated leech species are recorded from East Asia, Southeast Asia, India and Nepal, Africa, and North America. This group comprises a dozen glossiphoniid species with a hidden life style inside the mantle cavity of their hosts largely overlooked by researchers. We show that the association with freshwater mussels evolved independently in three leech clades, i.e. Batracobdelloides, Hemiclepsis, and Placobdella, at least since the Miocene. Seven mussel-associated leech species and two additional free-living taxa are described here as new to science.
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Affiliation(s)
- Ivan N Bolotov
- Northern Arctic Federal University, Arkhangelsk, Russia.
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia.
- Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Saint Petersburg, Russia.
| | - Anna L Klass
- Northern Arctic Federal University, Arkhangelsk, Russia
| | - Alexander V Kondakov
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
- Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Saint Petersburg, Russia
| | - Ilya V Vikhrev
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
- Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Saint Petersburg, Russia
| | - Yulia V Bespalaya
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
- Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Saint Petersburg, Russia
| | - Mikhail Yu Gofarov
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Boris Yu Filippov
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Arthur E Bogan
- Research Laboratory, North Carolina Museum of Natural Sciences, Raleigh, North Carolina, United States of America
| | - Manuel Lopes-Lima
- CIBIO/InBIO - Research Center in Biodiversity and Genetic Resources, University of Porto, Campus Agrário de Vairão, Vairão, Portugal
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Matosinhos, Portugal
- SSC/IUCN - Mollusc Specialist Group, Species Survival Commission, International Union for Conservation of Nature, Cambridge, United Kingdom
| | - Zau Lunn
- Fauna & Flora International - Myanmar Program, Yangon, Myanmar
| | - Nyein Chan
- Fauna & Flora International - Myanmar Program, Yangon, Myanmar
| | - Olga V Aksenova
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
- Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Saint Petersburg, Russia
| | - Gennady A Dvoryankin
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Yulia E Chapurina
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Sang Ki Kim
- Nakdonggang National Institute of Biological Resources, Gyeongsangbuk-do, Korea
| | - Yulia S Kolosova
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Ekaterina S Konopleva
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | | | - Alexander A Makhrov
- Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Saint Petersburg, Russia
- A. N. Severtzov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - Dmitry M Palatov
- A. N. Severtzov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
- Lomonosov Moscow State University, Moscow, Russia
| | - Elena M Sayenko
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Vitaly M Spitsyn
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Svetlana E Sokolova
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Alena A Tomilova
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Than Win
- Department of Zoology, Hpa-An University, Hpa-An, Kayin State, Myanmar
| | - Natalia A Zubrii
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Maxim V Vinarski
- Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Saint Petersburg, Russia
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259
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Jossart Q, Sands CJ, Sewell MA. Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star. Heredity (Edinb) 2019; 123:622-633. [PMID: 31073238 PMCID: PMC6972741 DOI: 10.1038/s41437-019-0228-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/08/2019] [Accepted: 04/18/2019] [Indexed: 11/09/2022] Open
Abstract
Poecilogony, or multiple developmental modes in a single species, is exceedingly rare. Several species described as poecilogenous were later demonstrated to be multiple (cryptic) species with a different developmental mode. The Southern Ocean is known to harbor a high proportion of brooders (Thorson's Rule) but with an increasing number of counter examples over recent years. Here we evaluated poecilogony vs. crypticism in the brittle star Astrotoma agassizii across the Southern Ocean. This species was initially described from South America as a brooder before some pelagic stages were identified in Antarctica. Reproductive and mitochondrial data were combined to unravel geographic and genetic variation of developmental modes. Our results indicate that A. agassizii is composed of seven well-supported and deeply divergent clades (I: Antarctica and South Georgia; II: South Georgia and Sub-Antarctic locations including Kerguelen, Patagonian shelf, and New Zealand; III-VI-VII: Patagonian shelf, IV-V: South Georgia). Two of these clades demonstrated strong size dimorphism when in sympatry and can be linked to differing developmental modes (Clade V: dwarf brooder vs. Clade I: giant broadcaster). Based on their restricted geographic distributions and on previous studies, it is likely that Clades III-VI-VII are brooders. Clade II is composed of different morphological species, A. agassizii and A. drachi, the latter originally used as the outgroup. By integrating morphology, reproductive, and molecular data we conclude that the variation identified in A. agassizii is best described as crypticism rather than poecilogony.
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Affiliation(s)
- Quentin Jossart
- University of Auckland, Auckland, New Zealand.
- British Antarctic Survey, Cambridge, UK.
- Vrije Universiteit Brussel, Brussels, Belgium.
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260
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Rimington WR, Pressel S, Duckett JG, Field KJ, Bidartondo MI. Evolution and networks in ancient and widespread symbioses between Mucoromycotina and liverworts. MYCORRHIZA 2019; 29:551-565. [PMID: 31720838 PMCID: PMC6890582 DOI: 10.1007/s00572-019-00918-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 09/13/2019] [Indexed: 05/09/2023]
Abstract
Like the majority of land plants, liverworts regularly form intimate symbioses with arbuscular mycorrhizal fungi (Glomeromycotina). Recent phylogenetic and physiological studies report that they also form intimate symbioses with Mucoromycotina fungi and that some of these, like those involving Glomeromycotina, represent nutritional mutualisms. To compare these symbioses, we carried out a global analysis of Mucoromycotina fungi in liverworts and other plants using species delimitation, ancestral reconstruction, and network analyses. We found that Mucoromycotina are more common and diverse symbionts of liverworts than previously thought, globally distributed, ancestral, and often co-occur with Glomeromycotina within plants. However, our results also suggest that the associations formed by Mucoromycotina fungi are fundamentally different because, unlike Glomeromycotina, they may have evolved multiple times and their symbiotic networks are un-nested (i.e., not forming nested subsets of species). We infer that the global Mucoromycotina symbiosis is evolutionarily and ecologically distinctive.
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Affiliation(s)
- William R Rimington
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK.
- Department of Life Sciences, Algae, Fungi and Plants Division, Natural History Museum, London, London, SW7 5BD, UK.
- Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Richmond, TW9 3DS, UK.
| | - Silvia Pressel
- Department of Life Sciences, Algae, Fungi and Plants Division, Natural History Museum, London, London, SW7 5BD, UK
| | - Jeffrey G Duckett
- Department of Life Sciences, Algae, Fungi and Plants Division, Natural History Museum, London, London, SW7 5BD, UK
| | - Katie J Field
- Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - Martin I Bidartondo
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK.
- Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Richmond, TW9 3DS, UK.
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261
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Worsaae K, Kerbl A, Vang Á, Gonzalez BC. Broad North Atlantic distribution of a meiobenthic annelid - against all odds. Sci Rep 2019; 9:15497. [PMID: 31664164 PMCID: PMC6820731 DOI: 10.1038/s41598-019-51765-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/30/2019] [Indexed: 01/10/2023] Open
Abstract
DNA barcoding and population genetic studies have revealed an unforeseen hidden diversity of cryptic species among microscopic marine benthos, otherwise exhibiting highly similar and simple morphologies. This has led to a paradigm shift, rejecting cosmopolitism of marine meiofauna until genetically proven and challenging the "Everything is Everywhere, but the environment selects" hypothesis that claims ubiquitous distribution of microscopic organisms. With phylogenetic and species delimitation analyses of worldwide genetic samples of the meiofaunal family Dinophilidae (Annelida) we here resolve three genera within the family and showcase an exceptionally broad, boreal, North Atlantic distribution of a single microscopic marine species with no obvious means of dispersal besides vicariance. With its endobenthic lifestyle, small size, limited migratory powers and lack of pelagic larvae, the broad distribution of Dinophilus vorticoides seems to constitute a "meiofaunal paradox". This species feasts in the biofilm among sand grains, but also on macroalgae and ice within which it can likely survive long-distance rafting dispersal due to its varying lifecycle stages; eggs encapsulated in cocoons and dormant encystment stages. Though often neglected and possibly underestimated among marine microscopic species, dormancy may be a highly significant factor for explaining wide distribution patterns and a key to solving this meiofaunal paradox.
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Affiliation(s)
- Katrine Worsaae
- University of Copenhagen, Department of Biology, Marine Biological Section, Universitetsparken 4, 2100, Copenhagen Ø, Denmark.
| | - Alexandra Kerbl
- University of Copenhagen, Department of Biology, Marine Biological Section, Universitetsparken 4, 2100, Copenhagen Ø, Denmark
| | - Áki Vang
- University of Copenhagen, Department of Biology, Marine Biological Section, Universitetsparken 4, 2100, Copenhagen Ø, Denmark
| | - Brett C Gonzalez
- University of Copenhagen, Department of Biology, Marine Biological Section, Universitetsparken 4, 2100, Copenhagen Ø, Denmark.
- Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology, MRC-163, P.O. BOX 37012, Washington, D.C., 20013, USA.
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262
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Serdari D, Kostaki EG, Paraskevis D, Stamatakis A, Kapli P. Automated, phylogeny-based genotype delimitation of the Hepatitis Viruses HBV and HCV. PeerJ 2019; 7:e7754. [PMID: 31667012 PMCID: PMC6816385 DOI: 10.7717/peerj.7754] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 08/26/2019] [Indexed: 12/15/2022] Open
Abstract
Background The classification of hepatitis viruses still predominantly relies on ad hoc criteria, i.e., phenotypic traits and arbitrary genetic distance thresholds. Given the subjectivity of such practices coupled with the constant sequencing of samples and discovery of new strains, this manual approach to virus classification becomes cumbersome and impossible to generalize. Methods Using two well-studied hepatitis virus datasets, HBV and HCV, we assess if computational methods for molecular species delimitation that are typically applied to barcoding biodiversity studies can also be successfully deployed for hepatitis virus classification. For comparison, we also used ABGD, a tool that in contrast to other distance methods attempts to automatically identify the barcoding gap using pairwise genetic distances for a set of aligned input sequences. Results—Discussion We found that the mPTP species delimitation tool identified even without adapting its default parameters taxonomic clusters that either correspond to the currently acknowledged genotypes or to known subdivision of genotypes (subtypes or subgenotypes). In the cases where the delimited cluster corresponded to subtype or subgenotype, there were previous concerns that their status may be underestimated. The clusters obtained from the ABGD analysis differed depending on the parameters used. However, under certain values the results were very similar to the taxonomy and mPTP which indicates the usefulness of distance based methods in virus taxonomy under appropriate parameter settings. The overlap of predicted clusters with taxonomically acknowledged genotypes implies that virus classification can be successfully automated.
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Affiliation(s)
- Dora Serdari
- The Exelixis Lab, Scientific Computing Group, Heidelberg Institute for Theoretical Studies, Heidelberg, Germany
| | - Evangelia-Georgia Kostaki
- Department of Hygiene Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios Paraskevis
- Department of Hygiene Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandros Stamatakis
- The Exelixis Lab, Scientific Computing Group, Heidelberg Institute for Theoretical Studies, Heidelberg, Germany.,Institute for Theoretical Informatics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Paschalia Kapli
- Centre for Life's Origins and Evolution, Department of Genetics Evolution and Environment, University College London, University of London, London, United Kingdom
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263
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Pfingstl T, Baumann J, Lienhard A. The Caribbean enigma: the presence of unusual cryptic diversity in intertidal mites (Arachnida, Acari, Oribatida). ORG DIVERS EVOL 2019; 19:609-623. [PMID: 31885493 PMCID: PMC6913133 DOI: 10.1007/s13127-019-00416-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 08/22/2019] [Indexed: 01/25/2023]
Abstract
The definition, as well as the existence of cryptic species, is still a subject of controversial debates. Some scientists claim that cryptic diversity is a real phenomenon that should be extensively studied while others argue that cryptic species do not exist as they are nothing more than an incompatibility of species concepts. We investigated the enigmatic case of two widely distributed Caribbean intertidal oribatid mites, Carinozetes bermudensis and Carinozetes mangrovi, consisting of five distinct genetic lineages. Morphological features allowing to clearly distinguish between these lineages are absent, and despite certain congruence with genetic data, comprehensive morphometric analyses also do not show clear separation. Species delimitation analyses based on COI sequence data, on the other hand, suggest five distinct genetic species. Despite the lack of diagnostic characters for these suggested species, the lineages can be classified at least into two morphological groups, the bermudensis and the mangrovi group which can only be distinguished by the arrangement of cuticular ventral carinae. Specimens within a group show nearly identical phenotypes, impeding morphological identification and hence rendering the found diversity cryptic. Stabilizing selection caused by the extreme conditions of the intertidal environment is suggested to be responsible for the found morphological stasis. The genetic lineages show more or less clear geographic patterns; in C. mangrovi, there is a northern, an Antillean, and a Pacific lineage, whereas in C. bermudensis, there is a Bermudian and a Caribbean lineage. In a few places, e.g., the Bahamas and Panama, distributions may overlap. Neither the found biogeographic pattern nor the observed ecological needs could explain the reason for the genetic diversification of Caribbean Carinozetes.
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Affiliation(s)
- Tobias Pfingstl
- Institute of Biology, Department for Biodiversity and Evolution, University of Graz, Universitaetsplatz 2, 8010 Graz, Austria
| | - Julia Baumann
- Institute of Biology, Department for Biodiversity and Evolution, University of Graz, Universitaetsplatz 2, 8010 Graz, Austria
| | - Andrea Lienhard
- Institute of Biology, Department for Biodiversity and Evolution, University of Graz, Universitaetsplatz 2, 8010 Graz, Austria
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264
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Haponski AE, Ó Foighil D. Phylogenomic analyses confirm a novel invasive North American Corbicula (Bivalvia: Cyrenidae) lineage. PeerJ 2019; 7:e7484. [PMID: 31497390 PMCID: PMC6708575 DOI: 10.7717/peerj.7484] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/15/2019] [Indexed: 11/20/2022] Open
Abstract
The genus Corbicula consists of estuarine or freshwater clams native to temperate/tropical regions of Asia, Africa, and Australia that collectively encompass both sexual species and clonal (androgenetic) lineages. The latter have become globally invasive in freshwater systems and they represent some of the most successful aquatic invasive lineages. Previous studies have documented four invasive clonal lineages, Forms A, B, C, and Rlc, with varying known distributions. Form A (R in Europe) occurs globally, Form B is found solely in North America, mainly the western United States, Form C (S in Europe) occurs both in European watersheds and in South America, and Rlc is known from Europe. A putative fifth invasive morph, Form D, was recently described in the New World from the Illinois River (Great Lakes watershed), where it occurs in sympatry with Forms A and B. An initial study showed Form D to be conchologically distinct: possessing rust-colored rays and white nacre with purple teeth. However, its genetic distinctiveness using standard molecular markers (mitochondrial cytochrome c oxidase subunit I and nuclear ribosomal 28S RNA) was ambiguous. To resolve this issue, we performed a phylogenomic analysis using 1,699-30,027 nuclear genomic loci collected via the next generation double digested restriction-site associated DNA sequencing method. Our results confirmed Form D to be a distinct invasive New World lineage with a population genomic profile consistent with clonality. A majority (7/9) of the phylogenomic analyses recovered the four New World invasive Corbicula lineages (Forms A, B, C, and D) as members of a clonal clade, sister to the non-clonal Lake Biwa (Japan) endemic, Corbicula sandai. The age of the clonal clade was estimated at 1.49 million years (my; ± 0.401-2.955 my) whereas the estimated ages of the four invasive lineage crown clades ranged from 0.27 to 0.44 my. We recovered very little evidence of nuclear genomic admixture among the four invasive lineages in our study populations. In contrast, 2/6 C. sandai individuals displayed partial nuclear genomic Structure assignments with multiple invasive clonal lineages. These results provide new insights into the origin and maintenance of clonality in this complex system.
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Affiliation(s)
- Amanda E. Haponski
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI, USA
| | - Diarmaid Ó Foighil
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI, USA
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265
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Potapov GS, Kondakov AV, Filippov BY, Gofarov MY, Kolosova YS, Spitsyn VM, Tomilova AA, Zubrii NA, Bolotov IN. Pollinators on the polar edge of the Ecumene: taxonomy, phylogeography, and ecology of bumble bees from Novaya Zemlya. Zookeys 2019; 866:85-115. [PMID: 31388324 PMCID: PMC6669216 DOI: 10.3897/zookeys.866.35084] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 06/15/2019] [Indexed: 11/22/2022] Open
Abstract
The High Arctic bumble bee fauna is rather poorly known, while a growing body of recent molecular research indicates that several Arctic species may represent endemic lineages with restricted ranges. Such local endemics are in need of special conservation efforts because of the increasing anthropogenic pressure and climate changes. Here, we re-examine the taxonomic and biogeographic affinities of bumble bees from Novaya Zemlya using historical samples and recently collected materials (1895–1925 vs. 2015–2017). Three bumble bee species inhabit the Yuzhny (Southern) Island and the southern edge of Severny (Northern) Island of this archipelago: Bombusglacialis Friese, 1902, B.hyperboreus Schönherr, 1809, and B.pyrrhopygus Friese, 1902. Bombusglacialis shares three unique COI haplotypes that may indicate its long-term (pre-glacial) persistence on Novaya Zemlya. In contrast, Bombushyperboreus and B.pyrrhopygus share a rather low molecular divergence from mainland populations, with the same or closely related haplotypes as those from Arctic Siberia and Norway. A brief re-description of Bombuspyrrhopygus based on the newly collected topotypes is presented. Habitats, foraging plants and life cycles of bumble bees on Novaya Zemlya are characterized, and possible causes of extremely low bumble bee abundance on the archipelago are discussed. The species-poor bumble bee fauna of Novaya Zemlya is compared with those in other areas throughout the Arctic. The mean bumble bee species richness on the Arctic Ocean islands is three times lower than that in the mainland Arctic areas (3.1 vs. 8.6 species per local fauna, respectively). General linear models (GLMs) indicate that this difference can be explained by specific environmental conditions of insular areas. Our findings highlight that the insularity is a significant factor sharply decreasing species richness in bumble bee assemblages on the Arctic Ocean archipelagoes through colder climate (lower summer temperatures), prevalence of harsh Arctic tundra landscapes with poor foraging resources, and in isolation from the mainland.
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Affiliation(s)
- Grigory S Potapov
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Alexander V Kondakov
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Boris Yu Filippov
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Mikhail Yu Gofarov
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Yulia S Kolosova
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Vitaly M Spitsyn
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Alena A Tomilova
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Natalia A Zubrii
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
| | - Ivan N Bolotov
- Northern Arctic Federal University, 163002, Northern Dvina Emb. 17, Arkhangelsk, Russia Federal Center for Integrated Arctic Research, Russian Academy of Sciences Arkhangelsk Russia.,Federal Center for Integrated Arctic Research, Russian Academy of Sciences, 163000, Northern Dvina Emb. 23, Arkhangelsk, Russia Northern Arctic Federal University Arkhangelsk Russia
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266
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Moreau C, Danis B, Jossart Q, Eléaume M, Sands C, Achaz G, Agüera A, Saucède T. Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? Ecol Evol 2019; 9:8465-8478. [PMID: 31410254 PMCID: PMC6686340 DOI: 10.1002/ece3.5280] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 05/04/2019] [Indexed: 12/12/2022] Open
Abstract
Life traits such as reproductive strategy can be determining factors of species evolutionary history and explain the resulting diversity patterns. This can be investigated using phylogeographic analyses of genetic units. In this work, the genetic structure of five asteroid genera with contrasting reproductive strategies (brooding: Diplasterias, Notasterias and Lysasterias versus broadcasting: Psilaster and Bathybiaster) was investigated in the Southern Ocean. Over 1,400 mtDNA cytochrome C oxidase subunit I (COI) sequences were analysed using five species delineation methods (ABGD, ASAP, mPTP, sGMYC and mGMYC), two phylogenetic reconstructions (ML and BA), and molecular clock calibrations, in order to examine the weight of reproductive strategy in the observed differences among phylogeographic patterns. We hypothesised that brooding species would show higher levels of genetic diversity and species richness along with a clearer geographic structuring than broadcasting species. In contrast, genetic diversity and species richness were not found to be significantly different between brooders and broadcasters, but broadcasters are less spatially structured than brooders supporting our initial hypothesis and suggesting more complex evolutionary histories associated to this reproductive strategy. Broadcasters' phylogeography can be explained by different scenarios including deep-sea colonisation routes, bipolarity or cosmopolitanism, and sub-Antarctic emergence for the genus Bathybiaster; Antarctic- New Zealand faunal exchanges across the Polar Front for the genus Psilaster. Brooders' phylogeography could support the previously formulated hypothesis of a past trans-Antarctic seaway established between the Ross and the Weddell seas during the Plio-Pleistocene. Our results also show, for the first time, that the Weddell Sea is populated by a mixed asteroid fauna originating from both the East and West Antarctic.
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Affiliation(s)
- Camille Moreau
- Marine Biology LabUniversité Libre de Bruxelles (ULB)Belgium
- Biogéosciences, UMR 6282 CNRSUniversité Bourgogne Franche‐ComtéDijonFrance
| | - Bruno Danis
- Marine Biology LabUniversité Libre de Bruxelles (ULB)Belgium
| | - Quentin Jossart
- Marine Biology LabUniversité Libre de Bruxelles (ULB)Belgium
- Marine BiologyVrije Universiteit Brussel (VUB)BrusselsBelgium
| | - Marc Eléaume
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRSSorbonne UniversitéParisFrance
| | - Chester Sands
- Natural Environment Research CouncilBritish Antarctic SurveyCambridgeUK
| | - Guillaume Achaz
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRSSorbonne UniversitéParisFrance
- Centre Interdisciplinaire de Recherche en Biologie (CIRB), CNRSINSERM, Collège de FranceParisFrance
| | - Antonio Agüera
- Marine Biology LabUniversité Libre de Bruxelles (ULB)Belgium
| | - Thomas Saucède
- Biogéosciences, UMR 6282 CNRSUniversité Bourgogne Franche‐ComtéDijonFrance
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267
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Poveda-Martínez D, Aguirre MB, Logarzo G, Calderón L, de la Colina A, Hight S, Triapitsyn S, Diaz-Soltero H, Hasson E. Untangling the Hypogeococcus pungens species complex (Hemiptera: Pseudococcidae) for Argentina, Australia, and Puerto Rico based on host plant associations and genetic evidence. PLoS One 2019; 14:e0220366. [PMID: 31344099 PMCID: PMC6657911 DOI: 10.1371/journal.pone.0220366] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/15/2019] [Indexed: 11/18/2022] Open
Abstract
Hypogeococcus pungens, a mealybug native of southern South America, is devastating native cacti in Puerto Rico and threatening cactus diversity in the Caribbean, and potentially in Central and North America. The taxonomic status of H. pungens is controversial since it has been reported feeding not only on Cactaceae but also on other plant families throughout its distribution range. However, in Australia, where the species had been exported from Argentina to control weedy American cacti, it was never found on host plants other than Cactaceae. These conflicting pieces of evidence not only cast doubt on the species identity that invaded Puerto Rico, but also have a negative impact on the search for natural enemies to be used in biological control programs against this pest. Here we present reproductive incompatibility and phylogenetic evidences that give support to the hypothesis that H. pungens is a species complex in which divergence appears to be driven by the host plants. The nuclear EF1α and 18S and the mitochondrial COI genes were used as markers to evaluate the phylogenetic relationships among H. pungens populations collected in Argentina, Australia and Puerto Rico feeding on Cactaceae and/or Amaranthaceae. Additionally, we conducted reciprocal crosses between mealybugs from both hosts. Species delimitation analysis revealed two well-supported putative species within H. pungens, one including mealybugs feeding on Amaranthaceae (H. pungens sensu stricto), and a new undescribed species using Cactaceae as hosts. Additionally, we found asymmetric reproductive incompatibility between these putative species suggesting recent reproductive isolation. The Bayesian species delimitation also suggested that the Australian mealybug population may derive from another undescribed species. Overall, the patterns of genetic differentiation may be interpreted as the result of recent speciation events prompted by host plant shifts. Finally, the finding of a single haplotype in the Puerto Rico population suggests only one invasive event. We still need to identify the geographical origin of the pest in order to enable the use of biological control to reduce the threat to cacti diversity in the Caribbean.
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Affiliation(s)
- Daniel Poveda-Martínez
- Fundación para el Estudio de Especies Invasivas (FuEDEI), Hurlingham, Buenos Aires, Argentina
- Instituto de Ecología Genética y Evolución de Buenos Aires (IEGEBA), Departamento de Ecología Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
- Grupo de investigación en Evolución, Ecología y Conservación (EECO), Universidad del Quindío, Armenia, Colombia
- * E-mail: (DPM); (MBA)
| | - María Belén Aguirre
- Fundación para el Estudio de Especies Invasivas (FuEDEI), Hurlingham, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
- * E-mail: (DPM); (MBA)
| | - Guillermo Logarzo
- Fundación para el Estudio de Especies Invasivas (FuEDEI), Hurlingham, Buenos Aires, Argentina
| | - Luciano Calderón
- Fundación para el Estudio de Especies Invasivas (FuEDEI), Hurlingham, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Alicia de la Colina
- Instituto de Ecología Genética y Evolución de Buenos Aires (IEGEBA), Departamento de Ecología Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Stephen Hight
- U.S. Department of Agriculture-ARS, Tallahassee, Florida, United States of America
| | - Serguei Triapitsyn
- Department of Entomology, University of California, Riverside, California, United States of America
| | - Hilda Diaz-Soltero
- Caribbean Advisor to the APHIS Administrator, USDA, San Juan, Puerto Rico
| | - Esteban Hasson
- Instituto de Ecología Genética y Evolución de Buenos Aires (IEGEBA), Departamento de Ecología Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
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268
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Cozzarolo CS, Balke M, Buerki S, Arrigo N, Pitteloud C, Gueuning M, Salamin N, Sartori M, Alvarez N. Biogeography and Ecological Diversification of a Mayfly Clade in New Guinea. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00233] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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269
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Rahman MM, Norén M, Mollah AR, Kullander SO. Building a DNA barcode library for the freshwater fishes of Bangladesh. Sci Rep 2019; 9:9382. [PMID: 31253861 PMCID: PMC6599201 DOI: 10.1038/s41598-019-45379-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 06/03/2019] [Indexed: 01/24/2023] Open
Abstract
We sequenced the standard DNA barcode gene fragment in 694 newly collected specimens, representing 243 species level Operational Barcode Units (OBUs) of freshwater fishes from Bangladesh. We produced coi sequences for 149 out of the 237 species already recorded from Bangladesh. Another 83 species sequenced were not previously recorded for the country, and include about 30 undescribed or potentially undescribed species. Several of the taxa that we could not sample represent erroneous records for the country, or sporadic occurrences. Species identifications were classified at confidence levels 1(best) to 3 (worst). We propose the new term Operational Barcode Unit (OBU) to simplify references to would-be DNA barcode sequences and sequence clusters. We found one case where there were two mitochondrial lineages present in the same species, several cases of cryptic species, one case of introgression, one species yielding a pseudogene to standard barcoding primers, and several cases of taxonomic uncertainty and need for taxonomic revision. Large scale national level DNA barcode prospecting in high diversity regions may suffer from lack of taxonomic expertise that cripples the result. Consequently, DNA barcoding should be performed in the context of taxonomic revision, and have a defined, competent end-user.
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Affiliation(s)
- Md Mizanur Rahman
- University of Dhaka, Department of Zoology, Dhaka, Dhaka, 1000, Bangladesh
| | - Michael Norén
- Swedish Museum of Natural History, Department of Zoology, SE-104 05, Stockholm, Sweden
| | - Abdur Rob Mollah
- University of Dhaka, Department of Zoology, Dhaka, Dhaka, 1000, Bangladesh
| | - Sven O Kullander
- Swedish Museum of Natural History, Department of Zoology, SE-104 05, Stockholm, Sweden.
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270
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Schyra J, Gbenyedji JNBK, Korb J. A comparison of termite assemblages from West African savannah and forest ecosystems using morphological and molecular markers. PLoS One 2019; 14:e0216986. [PMID: 31166963 PMCID: PMC6550446 DOI: 10.1371/journal.pone.0216986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 05/03/2019] [Indexed: 11/28/2022] Open
Abstract
Termites (Isoptera) are important ecosystem engineers of tropical ecosystems. However, they are notoriously difficult to identify, which hinders ecological research. To overcome these problems, we comparatively studied termite assemblages in the two major West African ecosystems, savannah and forest, both under natural settings and along disturbance gradients. We identified all species using morphological as well as molecular markers. We hypothesized species richness to be higher in the forest than the savannah and that it declines with disturbance in both ecosystems. Overall we found more species in the forest than in the savannah. However, alpha diversity per site did not differ between both ecosystems with on average around ten species. For both ecosystems, species diversity did not decrease along the studied disturbance gradient but encounter rates did. For the forest, we did not detect a decline in soil feeding termites and an increase of fungus grower Macrotermitinae with disturbance as some other studies did. Yet, soil feeders were generally rare. Strikingly, the set of morphologically difficult-to-identify Macrotermitinae (Microtermes and Ancistrotermes) was as high in the forest as in the savannah with little species overlap between both ecosystems. Using phylogenetic community analyses, we found little evidence for strong structuring mechanisms such as environmental filtering or interspecific competition. Most local assemblages did not differ significantly from random assemblages of the regional species pool. Our study is the most comprehensive of its kind. It provides the most reliable termite species list for West Africa that builds the basis for further ecological studies.
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Affiliation(s)
- Janine Schyra
- Behavioral Biology, University of Osnabrueck, Osnabrueck, Germany
| | - Jean Norbert B. K. Gbenyedji
- Laboratoire d’Entomologie Appliquée, Département de Zoologie et de Biologie Animale, Université de Lomé, Togo
- Evolutionary Biology and Ecology, University of Freiburg, Freiburg, Germany
| | - Judith Korb
- Behavioral Biology, University of Osnabrueck, Osnabrueck, Germany
- Evolutionary Biology and Ecology, University of Freiburg, Freiburg, Germany
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271
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Gladstone NS, Niemiller ML, Pieper EB, Dooley K, McKinney ML. Morphometrics and phylogeography of the cave-obligate land snail Helicodiscus barri (Gastropoda, Stylommatophora, Helicodiscidae). SUBTERRANEAN BIOLOGY 2019. [DOI: 10.3897/subtbiol.30.35321] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Molecular studies have recently led to the detection of many cryptic species complexes within morphologically ambiguous species formerly undescribed by the scientific community. Organisms such as land snails are at a particularly higher risk of species misidentification and misinterpretation, in that gastropod systematics are based almost entirely on external shell morphology. Subterranean ecosystems are associated with especially high degrees of cryptic speciation, largely owing to the abiotic similarities of these systems. In this study, we attempt to diagnose the potential cryptic diversity in the troglobitic land snail Helicodiscusbarri. Land snails are generally associated with having low vagility, and as such this species’ broad, mosaic distribution indicates the misdiagnosis of this organism as a single species. We analyze both mitochondrial (16S, CO1) and nuclear (28S, H3) genetic data for 23 populations. Phylogeny for H.barri was reconstructed using both maximum-likelihood and Bayesian approaches to assess relationships among populations, and two species delimitation methods (mPTP and ABGD) were used to detect the presence of unique molecular operational taxonomic units (MOTUs). Species delimitation results revealed seven and sixteen MOTUs respectively, suggesting the presence of several cryptic lineages within H.barri. To assess how external shell morphology corresponds with patterns of genetic and environmental variation, two morphometric approaches were used incorporating 115 shells from 31 populations. Both morphometric approaches reveal a significant environmental influence on shell morphology, and one approach showed the significance of MOTU groups. We discuss the delimitation and morphometric results and additionally provide discussion on the taxonomic and conservation implications of this study.
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272
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Jablonski D, Kukushkin OV, Avcı A, Bunyatova S, Kumlutaş Y, Ilgaz Ç, Polyakova E, Shiryaev K, Tuniyev B, Jandzik D. The biogeography of Elaphe sauromates (Pallas, 1814), with a description of a new rat snake species. PeerJ 2019; 7:e6944. [PMID: 31179175 PMCID: PMC6544014 DOI: 10.7717/peerj.6944] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/12/2019] [Indexed: 12/02/2022] Open
Abstract
Background The rat snake genus Elaphe once comprised several dozens of species distributed in temperate through tropical zones of the New and Old World. Based on molecular-genetic analyses in early 2000s, the genus was split into several separate genera, leaving only 15 Palearctic and Oriental species as its members. One of the three species also occurring in Europe is Elaphe sauromates, a robust snake from the Balkans, Anatolia, Caucasus, Ponto-Caspian steppes, and Levant that has been suspected to be composed of two or more genetically diverse populations. Here, we studied the genetic structure and morphological variation of E. sauromates, aiming to better understand its inter-population relationships and biogeography, and subsequently revise its taxonomy. Methods We reconstructed the phylogeography and analyzed the genetic structure of E. sauromates populations originating from most of its geographic range using both mitochondrial (COI, ND4) and nuclear (C-MOS, MC1R, PRLR, RAG1) DNA gene fragments. We employed Maximum likelihood and Bayesian inference methods for the phylogenetic tree reconstructions, supplemented with species delimitation methods, analysis of haplotype networks, and calculation of uncorrected p-distances. Morphological variation in 15 metric and 18 meristic characters was studied using parametric univariate tests as well as multivariate general linearized models. In total, we analyzed sequences originating from 63 specimens and morphological data from 95 specimens of E. sauromates sensu lato. Results The molecular phylogeny identified two clearly divergent sister lineages within E. sauromates, with both forming a lineage sister to E. quatuorlineata. The genetic distance between them (5.80–8.24% in mtDNA) is similar to the distances among several other species of the genus Elaphe. Both lineages are also moderately morphologically differentiated and, while none of the characters are exclusively diagnostic, their combination can be used for confident lineage identification. Here, following the criteria of genetic and evolutionary species concepts, we describe the lineage from eastern Anatolia and parts of the Lesser and Great Caucasus as a new species E. urartica sp. nov. Discussion Elaphe urartica sp. nov. represents a cryptic species whose ancestors presumably diverged from their common ancestor with E. sauromates around the Miocene-Pliocene boundary. The intraspecific genetic structure indicates that the recent diversity of both species has been predominantly shaped by Pleistocene climatic oscillations, with glacial refugia mainly located in the Balkans, Crimea, and/or Anatolia in E. sauromates and Anatolia and/or the Caucasus in E. urartica sp. nov.
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Affiliation(s)
- Daniel Jablonski
- Department of Zoology, Comenius University in Bratislava, Bratislava, Slovakia
| | - Oleg V Kukushkin
- Department of Biodiversity Studies and Ecological Monitoring, T. I. Vyazemski Karadag Research Station-Nature Reserve, Russian Academy of Sciences, Theodosia, Crimea.,Laboratory of Herpetology, Zoological Institute, Russian Academy of Sciences, Saint Petersburg, Russia
| | - Aziz Avcı
- Department of Biology, Faculty of Science and Arts, Adnan Menderes University, Aydın, Turkey
| | - Sabina Bunyatova
- Laboratory of Herpetology, Institute of Zoology, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
| | - Yusuf Kumlutaş
- Department of Biology, Faculty of Science, Dokuz Eylül University, Buca-İzmir, Turkey.,Research and Application Center for Fauna and Flora, Dokuz Eylül University, Buca-İzmir, Turkey
| | - Çetin Ilgaz
- Department of Biology, Faculty of Science, Dokuz Eylül University, Buca-İzmir, Turkey.,Research and Application Center for Fauna and Flora, Dokuz Eylül University, Buca-İzmir, Turkey
| | - Ekaterina Polyakova
- Zoological Department, Tula State Regional Exotarium, Ministry of Culture of Tula Region, Tula, Russia
| | - Konstantin Shiryaev
- Zoological Department, Tula State Regional Exotarium, Ministry of Culture of Tula Region, Tula, Russia
| | - Boris Tuniyev
- Scientific Department, Federal State Institution Sochi National Park, Sochi, Russia
| | - David Jandzik
- Department of Zoology, Comenius University in Bratislava, Bratislava, Slovakia.,Department of Zoology, Charles University in Prague, Prague, Czech Republic
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273
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Lee TRC, Anderson SJ, Tran-Nguyen LTT, Sallam N, Le Ru BP, Conlong D, Powell K, Ward A, Mitchell A. Towards a global DNA barcode reference library for quarantine identifications of lepidopteran stemborers, with an emphasis on sugarcane pests. Sci Rep 2019; 9:7039. [PMID: 31065024 PMCID: PMC6504866 DOI: 10.1038/s41598-019-42995-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 04/05/2019] [Indexed: 11/09/2022] Open
Abstract
Lepidopteran stemborers are among the most damaging agricultural pests worldwide, able to reduce crop yields by up to 40%. Sugarcane is the world’s most prolific crop, and several stemborer species from the families Noctuidae, Tortricidae, Crambidae and Pyralidae attack sugarcane. Australia is currently free of the most damaging stemborers, but biosecurity efforts are hampered by the difficulty in morphologically distinguishing stemborer species. Here we assess the utility of DNA barcoding in identifying stemborer pest species. We review the current state of the COI barcode sequence library for sugarcane stemborers, assembling a dataset of 1297 sequences from 64 species. Sequences were from specimens collected and identified in this study, downloaded from BOLD or requested from other authors. We performed species delimitation analyses to assess species diversity and the effectiveness of barcoding in this group. Seven species exhibited <0.03 K2P interspecific diversity, indicating that diagnostic barcoding will work well in most of the studied taxa. We identified 24 instances of identification errors in the online database, which has hampered unambiguous stemborer identification using barcodes. Instances of very high within-species diversity indicate that nuclear markers (e.g. 18S, 28S) and additional morphological data (genitalia dissection of all lineages) are needed to confirm species boundaries.
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Affiliation(s)
- Timothy R C Lee
- Department of Entomology, Australian Museum Research Institute, 1 William St, Darlinghurst, NSW, 2010, Australia.
| | - Stacey J Anderson
- Biosecurity Operations, NAQS, Department of Agriculture and Water Resources, 1 Pederson Road, Eaton, NT, 0812, Australia
| | - Lucy T T Tran-Nguyen
- Northern Territory Department of Primary Industry and Resources, GPO Box 3000, Darwin, NT, 0801, Australia
| | - Nader Sallam
- Department of Agriculture and Water Resources, 114 Catalina Crescent, Airport Business Park, Cairns Airport, Cairns, QLD, 4870, Australia
| | - Bruno P Le Ru
- African Insect Science for Food and Health (ICIPE), PO Box 30772-00100, Nairobi, Kenya.,IRD/CNRS, UMR IRD 247 EGCE, Laboratoire Evolution Génomes Comportement et Ecologie, Avenue de la terrasse, BP1, 91198, Gif-sur-Yvette, France and Université Paris-Sud 11, 91405, Orsay, France
| | - Desmond Conlong
- Department of Conservation Ecology and Entomology, Faculty of AgriSciences, University of Stellenbosch, Private Bag X1, Matieland, Western Cape, 7602, South Africa.,South African Sugarcane Research Institute, 170 Flanders Drive, Mount Edgecombe, KwaZulu-Natal, 4300, South Africa
| | - Kevin Powell
- Sugar Research Australia, 71378 Bruce Highway, Gordonvale, QLD, 4865, Australia
| | - Andrew Ward
- Sugar Research Australia, 50 Meiers Road, Indooroopilly, QLD, 4068, Australia
| | - Andrew Mitchell
- Department of Entomology, Australian Museum Research Institute, 1 William St, Darlinghurst, NSW, 2010, Australia
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274
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Atherton S, Jondelius U. A taxonomic review and revisions of Microstomidae (Platyhelminthes: Macrostomorpha). PLoS One 2019; 14:e0212073. [PMID: 31017906 PMCID: PMC6481776 DOI: 10.1371/journal.pone.0212073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/22/2019] [Indexed: 11/18/2022] Open
Abstract
Microstomidae (Platyhelminthes: Macrostomorpha) diversity has been almost entirely ignored within recent years, likely due to inconsistent and often old taxonomic literature and a general rarity of sexually mature collected specimens. Herein, we reconstruct the phylogenetic relationships of the group using both previously published and new 18S and CO1 gene sequences. We present some taxonomic revisions of Microstomidae and further describe 8 new species of Microstomum based on both molecular and morphological evidence. Finally, we briefly review the morphological taxonomy of each species and provide a key to aid in future research and identification that is not dependent on reproductive morphology. Our goal is to clarify the taxonomy and facilitate future research into an otherwise very understudied group of tiny (but important) flatworms.
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Affiliation(s)
- Sarah Atherton
- Department of Zoology, Naturhistoriska riksmuseet, Stockholm, Sweden
| | - Ulf Jondelius
- Department of Zoology, Naturhistoriska riksmuseet, Stockholm, Sweden
- Department of Zoology, Systematics and Evolution, Stockholms Universitet,Stockholm, Sweden
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275
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Aguado MT, Capa M, Lago-Barcia D, Gil J, Pleijel F, Nygren A. Species delimitation in Amblyosyllis (Annelida, Syllidae). PLoS One 2019; 14:e0214211. [PMID: 30970025 PMCID: PMC6457521 DOI: 10.1371/journal.pone.0214211] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 03/08/2019] [Indexed: 11/19/2022] Open
Abstract
Amblyosyllis is a worldwide distributed group of annelids mainly found in coastal environments. It is well known among the polychaete specialists mostly because of its notable beauty, showing bright colourful patterns and outstanding long and coiled appendices. Amblyosyllis is a monophyletic genus easy to identify due to its distinct diagnostic features; however, the species and their boundaries are, in most cases, not well defined. Herein, we provide an extensive sample of Amblyosyllis material (115 specimens) from several world geographic areas. We have studied the morphological features of each specimen and photographed them alive. Two mitochondrial DNA markers (COI and 16S) and one nuclear gene fragment (28S, D1 region) were sequenced. We performed phylogenetic analyses based on each DNA partition, as well as the combined data sets, obtaining congruent results. Species delimitation methods such as distance analyses, statistical parsimony networks and multi-rate Poisson tree processes were also applied. The combined results obtained from different methodologies and data sets are used to differentiate between, at least, 19 lineages compatible with the separately evolving meta-populations species concept. Four of these lineages are identified as nominal species, including the type species of Amblyosyllis, A. rhombeata. For three other lineages previously synonymized names are recovered, and seven lineages are described as new species. All of these species are described and supported by appropriate iconography. We recognize several morphological characters useful to identify species of Amblyosyllis, which in some cases should also be combined with molecular methods for species delineation. The genetic divergence in the genus is high, contrary to the morphological homogeneity observed. Two species show a wide geographical distribution, while the rest have a more restricted distribution. There are several examples of species with overlapping distribution patterns.
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Affiliation(s)
- María Teresa Aguado
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain
- Animal Evolution and Biodiversity, Johann-Friedrich-Blumenbach Institute for Zoology & Anthropology, Georg-August-Universität Göttingen, Göttingen, Germany
| | - María Capa
- Departament de Biologia, Universitat de les Illes Balears, Palma, Illes Balears, Spain
- NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway
| | - Domingo Lago-Barcia
- Laboratório de Ecologia e Evolução, Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - João Gil
- Centre of Marine Sciences, CCMAR, University of Algarve, Faro, Portugal
- Centre d’Estudis Avançats de Blanes, CEAB-CSIC, Blanes, Girona, Spain
| | - Fredrik Pleijel
- Department of Marine Science, The Faculty of Science, University of Gothenburg, Tjärnö, Strömstad, Sweden
| | - Arne Nygren
- Department of Marine Science, The Faculty of Science, University of Gothenburg, Tjärnö, Strömstad, Sweden
- Sjöfartsmuseet Akvariet, Gothenburg, Sweden
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276
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Chapman PA, Cribb TH, Flint M, Traub RJ, Blair D, Kyaw-Tanner MT, Mills PC. Spirorchiidiasis in marine turtles: the current state of knowledge. DISEASES OF AQUATIC ORGANISMS 2019; 133:217-245. [PMID: 31187736 DOI: 10.3354/dao03348] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Blood flukes of the family Spirorchiidae are important disease agents in marine turtles. The family is near cosmopolitan in distribution. Twenty-nine marine species across 10 genera are currently recognized, but taxonomic problems remain and it is likely that more species will be discovered. Spirorchiids infect the circulatory system, where they and their eggs cause a range of inflammatory lesions. Infection is sometimes implicated in the death of the turtle. In some regions, prevalence in stranded turtles is close to 100%. Knowledge of life cycles, important for control and epidemiological studies, has proven elusive until recently, when the first intermediate host identifications were made. Recent molecular studies of eggs and adult worms indicate that a considerable level of intrageneric and intraspecific diversity exists. The characterization of this diversity is likely to be of importance in exploring parasite taxonomy and ecology, unravelling life cycles, identifying the differential pathogenicity of genotypes and species, and developing antemortem diagnostic tools, all of which are major priorities for future spirorchiid research. Diagnosis to date has been reliant on copromicroscopy or necropsy, which both have significant limitations. The current lack of reliable antemortem diagnostic options is a roadblock to determining the true prevalence and epidemiology of spirorchiidiasis and the development of effective treatment regimes.
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Affiliation(s)
- Phoebe A Chapman
- Veterinary-Marine Animal Research, Teaching and Investigation, School of Veterinary Science, The University of Queensland, Gatton, Queensland 4343, Australia
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277
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Dalstein V, Eberle J, Fabrizi S, Etzbauer C, Ahrens D. COI-based species delimitation in Indochinese Tetraserica chafers reveal hybridisation despite strong divergence in male copulation organs. ORG DIVERS EVOL 2019. [DOI: 10.1007/s13127-019-00398-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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278
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Bittencourt PS, Campos Z, Muniz FDL, Marioni B, Souza BC, Da Silveira R, de Thoisy B, Hrbek T, Farias IP. Evidence of cryptic lineages within a small South American crocodilian: the Schneider's dwarf caiman Paleosuchus trigonatus (Alligatoridae: Caimaninae). PeerJ 2019; 7:e6580. [PMID: 30931177 PMCID: PMC6433001 DOI: 10.7717/peerj.6580] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 02/01/2019] [Indexed: 11/25/2022] Open
Abstract
Schneider’s dwarf caiman Paleosuchus trigonatus is one of the smallest living crocodilians. Due to its broad distribution, cryptic behavior, and small home range, the species is well suited for the study of phylogeographic patterns on a continental scale. Additionally, this species is under threat due to habitat loss, trade and harvest, but is considered at low conservation risk by the IUCN. In the present study we test the hypothesis that P. trigonatus is comprised of geographically structured lineages. Phylogenetic reconstructions of the mitochondrial cytochrome b gene and single locus species discovery methods revealed the existence of two well-supported lineages within P. trigonatus—an Amazonian and Guianan lineage. Fossil calibrated divergence of these lineages was estimated to have occurred in the Late Miocene (7.5 Ma). The hypothesis that the Atlantic coast drainages might have been colonized from the southeast or central Amazon is supported by demographic metrics and relatively low genetic diversity of the Coastal and upper Branco populations when compared to the Amazon basin populations. The Amazon basin lineage is structured along an east-west gradient, with a sharp transition in haplotype frequencies to the east and west of the Negro and Madeira rivers. These lineages are already under anthropogenic threat and, therefore, are conservation dependent. Recognition of these lineages will foster discussion of conservation future of P. trigonatus and these lineages.
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Affiliation(s)
- Pedro Senna Bittencourt
- Laboratory of Animal Genetics and Evolution (LEGAL), Federal University of Amazonas, Manaus, Amazonas, Brazil.,Graduate Program in Genetics, Conservation, and Evolutionary Biology, National Institute of Amazonian Research (INPA), Manaus, Amazonas, Brazil
| | - Zilca Campos
- Wildlife Laboratory, Brazilian Agricultural Research Corporation (EMBRAPA) Pantanal, Corumbá, Mato Grosso do Sul, Brazil
| | - Fábio de Lima Muniz
- Laboratory of Animal Genetics and Evolution (LEGAL), Federal University of Amazonas, Manaus, Amazonas, Brazil.,Graduate Program in Genetics, Conservation, and Evolutionary Biology, National Institute of Amazonian Research (INPA), Manaus, Amazonas, Brazil
| | - Boris Marioni
- Graduate Program in Freshwater Biology and Inland Fisheries, National Institute of Amazonian Research (INPA), Manaus, Amazonas, Brazil
| | - Bruno Campos Souza
- Chico Mendes Institute for Biodiversity Conservation (ICMBio), Boa Vista, Roraima, Brazil
| | - Ronis Da Silveira
- Laboratory of Zoology Applied to Conservation, Federal University of Amazonas (UFAM), Manaus, Amazonas, Brazil
| | - Benoit de Thoisy
- Institut Pasteur de la Guyane, Cayenne, French Guiana.,Association Kwata, Cayenne, French Guiana
| | - Tomas Hrbek
- Laboratory of Animal Genetics and Evolution (LEGAL), Federal University of Amazonas, Manaus, Amazonas, Brazil
| | - Izeni Pires Farias
- Laboratory of Animal Genetics and Evolution (LEGAL), Federal University of Amazonas, Manaus, Amazonas, Brazil
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279
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Bernardo PH, Sánchez-Ramírez S, Sánchez-Pacheco SJ, Álvarez-Castañeda ST, Aguilera-Miller EF, Mendez-de la Cruz FR, Murphy RW. Extreme mito-nuclear discordance in a peninsular lizard: the role of drift, selection, and climate. Heredity (Edinb) 2019; 123:359-370. [PMID: 30833746 PMCID: PMC6781153 DOI: 10.1038/s41437-019-0204-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 02/13/2019] [Accepted: 02/18/2019] [Indexed: 12/22/2022] Open
Abstract
Nuclear and mitochondrial genomes coexist within cells but are subject to different tempos and modes of evolution. Evolutionary forces such as drift, mutation, selection, and migration are expected to play fundamental roles in the origin and maintenance of diverged populations; however, divergence may lag between genomes subject to different modes of inheritance and functional specialization. Herein, we explore whole mitochondrial genome data and thousands of nuclear single nucleotide polymorphisms to evidence extreme mito-nuclear discordance in the small black-tailed brush lizard, Urosaurus nigricaudus, of the Peninsula of Baja California, Mexico and southern California, USA, and discuss potential drivers. Results show three deeply divergent mitochondrial lineages dating back to the later Miocene (ca. 5.5 Ma) and Pliocene (ca. 2.8 Ma) that likely followed geographic isolation due to trans-peninsular seaways. This contrasts with very low levels of genetic differentiation in nuclear loci (FST < 0.028) between mtDNA lineages. Analyses of protein-coding genes reveal substantial fixed variation between mitochondrial lineages, of which a significant portion comes from non-synonymous mutations. A mixture of drift and selection is likely responsible for the rise of these mtDNA groups, albeit with little evidence of marked differences in climatic niche space between them. Finally, future investigations can look further into the role that mito-nuclear incompatibilities and mating systems play in explaining contrasting nuclear gene flow.
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Affiliation(s)
- Pedro Henrique Bernardo
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada. .,Department of Natural History, Royal Ontario Museum, Toronto, ON, Canada.
| | - Santiago Sánchez-Ramírez
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada.,Department of Natural History, Royal Ontario Museum, Toronto, ON, Canada
| | - Santiago J Sánchez-Pacheco
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada.,Department of Natural History, Royal Ontario Museum, Toronto, ON, Canada
| | | | | | | | - Robert W Murphy
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada.,Department of Natural History, Royal Ontario Museum, Toronto, ON, Canada
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280
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Aghová T, Palupčíková K, Šumbera R, Frynta D, Lavrenchenko LA, Meheretu Y, Sádlová J, Votýpka J, Mbau JS, Modrý D, Bryja J. Multiple radiations of spiny mice (Rodentia: Acomys) in dry open habitats of Afro-Arabia: evidence from a multi-locus phylogeny. BMC Evol Biol 2019; 19:69. [PMID: 30832573 PMCID: PMC6399835 DOI: 10.1186/s12862-019-1380-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 02/01/2019] [Indexed: 01/02/2023] Open
Abstract
Background Spiny mice of the genus Acomys are distributed mainly in dry open habitats in Africa and the Middle East, and they are widely used as model taxa for various biological disciplines (e.g. ecology, physiology and evolutionary biology). Despite their importance, large distribution and abundance in local communities, the phylogeny and the species limits in the genus are poorly resolved, and this is especially true for sub-Saharan taxa. The main aims of this study are (1) to reconstruct phylogenetic relationships of Acomys based on the largest available multilocus dataset (700 genotyped individuals from 282 localities), (2) to identify the main biogeographical divides in the distribution of Acomys diversity in dry open habitats in Afro-Arabia, (3) to reconstruct the historical biogeography of the genus, and finally (4) to estimate the species richness of the genus by application of the phylogenetic species concept. Results The multilocus phylogeny based on four genetic markers shows presence of five major groups of Acomys called here subspinosus, spinosissimus, russatus, wilsoni and cahirinus groups. Three of these major groups (spinosissimus, wilsoni and cahirinus) are further sub-structured to phylogenetic lineages with predominantly parapatric distributions. Combination of alternative species delimitation methods suggests the existence of 26 molecular operational taxonomic units (MOTUs), potentially corresponding to separate species. The highest genetic diversity was found in Eastern Africa. The origin of the genus Acomys is dated to late Miocene (ca. 8.7 Ma), when the first split occurred between spiny mice of eastern (Somali-Masai) and south-eastern (Zambezian) savannas. Further diversification, mostly in Plio-Pleistocene, and the current distribution of Acomys were influenced by the interplay of global climatic factors (e.g., Messinian salinity crisis, intensification of Northern Hemisphere glaciation) with local geomorphology (mountain chains, aridity belts, water bodies). Combination of divergence dating, species distribution modelling and historical biogeography analysis suggests repeated “out-of-East-Africa” dispersal events into western Africa, the Mediterranean region and Arabia. Conclusions The genus Acomys is very suitable model for historical phylogeographic and biogeographic reconstructions of dry non-forested environments in Afro-Arabia. We provide the most thorough phylogenetic reconstruction of the genus and identify major factors that influenced its evolutionary history since the late Miocene. We also highlight the urgent need of integrative taxonomic revision of east African taxa. Electronic supplementary material The online version of this article (10.1186/s12862-019-1380-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- T Aghová
- Institute of Vertebrate Biology of the Czech Academy of Sciences, 603 65, Brno, Czech Republic. .,Department of Zoology, National Museum, 115 79, Prague, Czech Republic.
| | - K Palupčíková
- Department of Zoology, Faculty of Science, Charles University, 128 44, Prague, Czech Republic
| | - R Šumbera
- Department of Zoology, Faculty of Science, University of South Bohemia, 370 05, České Budějovice, Czech Republic
| | - D Frynta
- Department of Zoology, Faculty of Science, Charles University, 128 44, Prague, Czech Republic
| | - L A Lavrenchenko
- A. N. Severtsov Institute of Ecology and Evolution RAS, 119071, Moscow, Russia
| | - Y Meheretu
- Department of Biology and Institute of Mountain Research and Development, Mekelle University, P.O. Box 3102, Mekelle, Tigray, Ethiopia
| | - J Sádlová
- Department of Parasitology, Faculty of Science, Charles University, 128 44, Prague, Czech Republic
| | - J Votýpka
- Department of Parasitology, Faculty of Science, Charles University, 128 44, Prague, Czech Republic.,Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 370 05, České Budějovice, Czech Republic
| | - J S Mbau
- Department of Land Resource Management and Agricultural Technology, College of Agriculture and Veterinary Sciences, University of Nairobi, Nairobi, Kenya
| | - D Modrý
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 370 05, České Budějovice, Czech Republic.,Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, 612 42, Brno, Czech Republic
| | - J Bryja
- Institute of Vertebrate Biology of the Czech Academy of Sciences, 603 65, Brno, Czech Republic.,Department of Botany and Zoology, Faculty of Science, Masaryk University, 602 00, Brno, Czech Republic
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281
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Hofmann EP, Nicholson KE, Luque-Montes IR, Köhler G, Cerrato-Mendoza CA, Medina-Flores M, Wilson LD, Townsend JH. Cryptic Diversity, but to What Extent? Discordance Between Single-Locus Species Delimitation Methods Within Mainland Anoles (Squamata: Dactyloidae) of Northern Central America. Front Genet 2019; 10:11. [PMID: 30804976 PMCID: PMC6378269 DOI: 10.3389/fgene.2019.00011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 01/11/2019] [Indexed: 01/10/2023] Open
Abstract
Single-locus molecular barcoding is a useful method for identifying overlooked and undescribed biodiversity, providing the groundwork for further systematic study and taxonomic investigation. A variety of methods for delimiting species from barcoding libraries have been developed and applied, allowing for rapid estimates of species diversity in a broad range of taxa. However, tree-based and distance-based analyses can infer different group assignments, potentially over- or underestimating the number of putative species groups. Here, we explore diversity of mainland species of anole lizards from the Chortís Block biogeographical province of northern Central America using a DNA barcoding approach, generating and analyzing cytochrome oxidase subunit I (COI) sequences for over 400 samples assignable to 33 of 38 (86.8%) native and one introduced mainland species. We subsequently tested the effects different models of nucleotide substitution, different species-delimitation algorithms, and reducing our dataset had on species delimitation estimates. We performed of two distance-based (ABGD, RESL) and three tree-based (bPTP, mPTP, GMYC) analyses on both the full dataset and a dataset consisting only of unique halotypes. From 34 nominal taxa, analyses of the full dataset recovered between 34 and 64 operational taxonomic units (OTUs), while analyses of the reduced dataset inferred between 36 and 59. Reassigning individuals to either mPTP-inferred or ABGD clustered (7.2% threshold) groups improved the detection of a barcoding gap across three different models of nucleotide substitution, removing overlap between intra- and interspecific distances. Our results highlight the underestimated diversity of mainland Chortís Block anoles, but the lack of congruence between analyses demonstrates the importance of considering multiple analytical methods when dealing with single-locus datasets. We recommend future studies consider the effects of different models of nucleotide substitution on proposed barcoding gaps, as well as the effect reducing a dataset to unique haplotypes may have on proposed diversity estimates.
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Affiliation(s)
- Erich P. Hofmann
- Department of Biology, Indiana University of Pennsylvania, Indiana, PA, United States
- Department of Biological Sciences, Clemson University, Clemson, SC, United States
| | - Kirsten E. Nicholson
- Department of Biology, Central Michigan University, Mount Pleasant, MI, United States
| | | | - Gunther Köhler
- Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt, Germany
| | - César A. Cerrato-Mendoza
- Federación Hondureña de Deportes de Montaña Y Escalada, Departamento de Francisco Morazán, Tegucigalpa, Honduras
| | - Melissa Medina-Flores
- Federación Hondureña de Deportes de Montaña Y Escalada, Departamento de Francisco Morazán, Tegucigalpa, Honduras
| | - Larry David Wilson
- Centro Zamorano de Biodiversidad, Escuela Agrícola Panamericana Zamorano, Departamento de Francisco Morazán, Tegucigalpa, Honduras
| | - Josiah H. Townsend
- Department of Biology, Indiana University of Pennsylvania, Indiana, PA, United States
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282
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Čandek K, Agnarsson I, Binford GJ, Kuntner M. Biogeography of the Caribbean Cyrtognatha spiders. Sci Rep 2019; 9:397. [PMID: 30674906 PMCID: PMC6344596 DOI: 10.1038/s41598-018-36590-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 11/01/2018] [Indexed: 12/18/2022] Open
Abstract
Island systems provide excellent arenas to test evolutionary hypotheses pertaining to gene flow and diversification of dispersal-limited organisms. Here we focus on an orbweaver spider genus Cyrtognatha (Tetragnathidae) from the Caribbean, with the aims to reconstruct its evolutionary history, examine its biogeographic history in the archipelago, and to estimate the timing and route of Caribbean colonization. Specifically, we test if Cyrtognatha biogeographic history is consistent with an ancient vicariant scenario (the GAARlandia landbridge hypothesis) or overwater dispersal. We reconstructed a species level phylogeny based on one mitochondrial (COI) and one nuclear (28S) marker. We then used this topology to constrain a time-calibrated mtDNA phylogeny, for subsequent biogeographical analyses in BioGeoBEARS of over 100 originally sampled Cyrtognatha individuals, using models with and without a founder event parameter. Our results suggest a radiation of Caribbean Cyrtognatha, containing 11 to 14 species that are exclusively single island endemics. Although biogeographic reconstructions cannot refute a vicariant origin of the Caribbean clade, possibly an artifact of sparse outgroup availability, they indicate timing of colonization that is much too recent for GAARlandia to have played a role. Instead, an overwater colonization to the Caribbean in mid-Miocene better explains the data. From Hispaniola, Cyrtognatha subsequently dispersed to, and diversified on, the other islands of the Greater, and Lesser Antilles. Within the constraints of our island system and data, a model that omits the founder event parameter from biogeographic analysis is less suitable than the equivalent model with a founder event.
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Affiliation(s)
- Klemen Čandek
- Evolutionary Zoology Laboratory, Department of Organisms and Ecosystems Research, National Institute of Biology, Ljubljana, Slovenia.
- Evolutionary Zoology Laboratory, Institute of Biology, Research Centre of the Slovenian Academy of the Sciences and Arts, Ljubljana, Slovenia.
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia.
| | - Ingi Agnarsson
- Department of Biology, University of Vermont, Burlington, VT, USA
- Department of Entomology, National Museum of Natural History, Smithsonian Institution, Washington D.C., USA
| | - Greta J Binford
- Department of Biology, Lewis and Clark College, Portland, OR, USA
| | - Matjaž Kuntner
- Evolutionary Zoology Laboratory, Department of Organisms and Ecosystems Research, National Institute of Biology, Ljubljana, Slovenia
- Department of Entomology, National Museum of Natural History, Smithsonian Institution, Washington D.C., USA
- College of Life Sciences, Hubei University, Wuhan, Hubei, China
- Evolutionary Zoology Laboratory, Institute of Biology, Research Centre of the Slovenian Academy of the Sciences and Arts, Ljubljana, Slovenia
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283
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Korb J, Kasseney BD, Cakpo YT, Casalla Daza RH, Gbenyedji JNKB, Ilboudo ME, Josens G, Koné NA, Meusemann K, Ndiaye AB, Okweche SI, Poulsen M, Roisin Y, Sankara F. Termite Taxonomy, Challenges and Prospects: West Africa, A Case Example. INSECTS 2019; 10:E32. [PMID: 30654506 PMCID: PMC6369426 DOI: 10.3390/insects10010032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 11/17/2022]
Abstract
Termites are important ecosystem engineers. Yet they are often difficult to identify due to the lack of reliable species-specific morphological traits for many species, which hampers ecological research. Recently, termitologists working with West African termites (West African Termite Taxonomy Initiative) convened for a workshop with the aim of beginning to address this problem. Repeated determination of the same termite samples by the most renowned taxonomists for West African termites identified the huge scale of the problem, as less than 10% of all species could be unambiguously determined to the species level. Intensive discussions and comparisons increased the identification success to around 25% at the end of the workshop. Yet many groups remained problematic and molecular markers and barcoding techniques combined with species delimitation approaches will be needed to help resolve these existing taxonomic problems. Based on the outcome of this workshop, we propose concerted initiatives to address termite taxonomy on a global scale. We are convinced that dedicated workshops on regional taxonomy that follow a similar structured approach, with repeated determination of the same sample, will help overcome the difficulties that termite taxonomy faces. This initiative can also serve as a blueprint for other taxonomical groups that are difficult to identify.
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Affiliation(s)
- Judith Korb
- Zoology I: Evolutionary Biology & Ecology, University of Freiburg, Hauptstrasse 1, 79104-Freiburg, Germany.
| | - Boris D Kasseney
- Laboratory of Applied Entomology, Department of Zoology and Animal Biology, Faculty of Sciences, S/C University of Lomé, 1 BP 1515 Lomé 1, Togo.
| | - Yvonne Tété Cakpo
- Laboratory of Applied Ecology, University of Abomey-Calavi, 03 BP 3908 Cotonou, Benin.
| | - Robin H Casalla Daza
- Zoology I: Evolutionary Biology & Ecology, University of Freiburg, Hauptstrasse 1, 79104-Freiburg, Germany.
- Departamento de Química y Biología, Universidad del Norte, Kilómetro 5 Antigua vía Puerto Colombia, 081007-Puerto Colombia, Colombia.
| | - Jean Norbert K B Gbenyedji
- Laboratory of Applied Entomology, Department of Zoology and Animal Biology, Faculty of Sciences, S/C University of Lomé, 1 BP 1515 Lomé 1, Togo.
| | - Mayouré Edith Ilboudo
- Institute of Science (IDS), University Ouaga I Pr Joseph KI-ZERBO (UO1PJKZ), O1 BP 2127 Ouagadougou 01, Burkina Faso.
| | - Guy Josens
- Ecologie végétale et biogéochimie, Université Libre de Bruxelles, Avenue F.D. Roosevelt 50, 1050 Bruxelles, Belgium.
| | - N'golo Abdoulaye Koné
- Université Nangui Abrogoua, UFR des Sciences de la Nature (UFR SN), Unité de Recherche en Ecologie et Biodiversité (UREB) & Station de Recherche en Ecologie du Parc National de la Comoé, 28 BP 847 Abidjan 28, Cote d'Ivoire.
| | - Karen Meusemann
- Zoology I: Evolutionary Biology & Ecology, University of Freiburg, Hauptstrasse 1, 79104-Freiburg, Germany.
| | - Abdoulaye B Ndiaye
- Laboratoire de Zoologie des Invertébrés Terrestres, IFAN B. P. 206 Dakar, Senegal.
| | - Simon Idoko Okweche
- Department of Forestry and Wildlife Resources Management, University of Calabar, Calabar Cross River State, P.M.B 1123 Calabar, Nigeria.
| | - Michael Poulsen
- Department of Biology, Section for Ecology and Evolution, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen East, Denmark.
| | - Yves Roisin
- Evolutionary Biology & Ecology, Université Libre de Bruxelles, Avenue F.D. Roosevelt 50, B-150 Brussels, Belgium.
| | - Fernand Sankara
- Institut du Développement Rural, Université Nazi Boni, 01BP 1091 Bobo 01, Burkina Faso.
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284
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Suárez-Villota EY, Quercia CA, Díaz LM, Vera-Sovier V, Nuñez JJ. Speciation in a biodiversity hotspot: Phylogenetic relationships, species delimitation, and divergence times of Patagonian ground frogs from the Eupsophus roseus group (Alsodidae). PLoS One 2018; 13:e0204968. [PMID: 30543633 PMCID: PMC6292574 DOI: 10.1371/journal.pone.0204968] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/27/2018] [Indexed: 11/19/2022] Open
Abstract
The alsodid ground frogs of the Eupsophus genus are divided into two groups, the roseus (2n = 30) and vertebralis (2n = 28), which are distributed throughout the temperate Nothofagus forests of South America. Currently, the roseus group is composed by four species, while the vertebralis group consists of two. Phylogenetic relationships and species delimitation within each group are controversial. In fact, previous analyses considered that the roseus group was composed of between four to nine species. In this work, we evaluated phylogenetic relationships, diversification times, and species delimitation within the roseus group using a multi-locus dataset. For this purpose, mitochondrial (D-loop, Cyt b, and COI) and nuclear (POMC and CRYBA1) partial sequences from 164 individuals were amplified, representing all species. Maximum Likelihood (ML) and Bayesian approaches were used to reconstruct phylogenetic relationships. Species tree was estimated using BEAST and singular value decomposition scores for species quartets (SVDquartets). Species limits were evaluated with six coalescent approaches. Diversification times were estimated using mitochondrial and nuclear rates with LogNormal relaxed clock in BEAST. Nine well-supported monophyletic lineages were recovered in Bayesian, ML, and SVDquartets, including eight named species and a lineage composed by specimens from the Villarrica population (Bootstrap:>70, PP:> 0.99). Single-locus species delimitation analyses overestimated the species number in E. migueli, E. calcaratus, and E. roseus lineages, while multi-locus analyses recovered as species the nine lineages observed in phylogenetic analyses (Ctax = 0.69). It is hypothesized that Eupsophus diversification occurred during Mid-Pleistocene (0.42-0.14 Mya), with most species having originated after the Last Southern Patagonian Glaciation (0.18 Mya). Our results revitalize the hypothesis that the E. roseus group is composed of eight species and support the Villarrica lineage as a new putative species.
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Affiliation(s)
| | - Camila A. Quercia
- Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Valdivia, Chile
| | - Leila M. Díaz
- Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Valdivia, Chile
| | - Victoria Vera-Sovier
- Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Valdivia, Chile
| | - José J. Nuñez
- Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Valdivia, Chile
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285
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Hubka V, Barrs V, Dudová Z, Sklenář F, Kubátová A, Matsuzawa T, Yaguchi T, Horie Y, Nováková A, Frisvad J, Talbot J, Kolařík M. Unravelling species boundaries in the Aspergillus viridinutans complex (section Fumigati): opportunistic human and animal pathogens capable of interspecific hybridization. PERSOONIA 2018; 41:142-174. [PMID: 30728603 PMCID: PMC6344812 DOI: 10.3767/persoonia.2018.41.08] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 03/14/2018] [Indexed: 12/13/2022]
Abstract
Although Aspergillus fumigatus is the major agent of invasive aspergillosis, an increasing number of infections are caused by its cryptic species, especially A. lentulus and the A. viridinutans species complex (AVSC). Their identification is clinically relevant because of antifungal drug resistance and refractory infections. Species boundaries in the AVSC are unresolved since most species have uniform morphology and produce interspecific hybrids in vitro. Clinical and environmental strains from six continents (n = 110) were characterized by DNA sequencing of four to six loci. Biological compatibilities were tested within and between major phylogenetic clades, and ascospore morphology was characterised. Species delimitation methods based on the multispecies coalescent model (MSC) supported recognition of ten species including one new species. Four species are confirmed opportunistic pathogens; A. udagawae followed by A. felis and A. pseudoviridinutans are known from opportunistic human infections, while A. felis followed by A. udagawae and A. wyomingensis are agents of feline sino-orbital aspergillosis. Recently described human-pathogenic species A. parafelis and A. pseudofelis are synonymized with A. felis and an epitype is designated for A. udagawae. Intraspecific mating assay showed that only a few of the heterothallic species can readily generate sexual morphs in vitro. Interspecific mating assays revealed that five different species combinations were biologically compatible. Hybrid ascospores had atypical surface ornamentation and significantly different dimensions compared to parental species. This suggests that species limits in the AVSC are maintained by both pre- and post-zygotic barriers and these species display a great potential for rapid adaptation and modulation of virulence. This study highlights that a sufficient number of strains representing genetic diversity within a species is essential for meaningful species boundaries delimitation in cryptic species complexes. MSC-based delimitation methods are robust and suitable tools for evaluation of boundaries between these species.
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Affiliation(s)
- V. Hubka
- Department of Botany, Faculty of Science, Charles University, Benátská 2, 128 01 Prague 2, Czech Republic
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the CAS, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
- First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic
| | - V. Barrs
- Sydney School of Veterinary Science, Faculty of Science, and Marie Bashir Institute of Infectious Diseases & Biosecurity, University of Sydney, Camperdown, NSW, Australia
| | - Z. Dudová
- Department of Botany, Faculty of Science, Charles University, Benátská 2, 128 01 Prague 2, Czech Republic
- First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic
| | - F. Sklenář
- Department of Botany, Faculty of Science, Charles University, Benátská 2, 128 01 Prague 2, Czech Republic
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the CAS, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - A. Kubátová
- Department of Botany, Faculty of Science, Charles University, Benátská 2, 128 01 Prague 2, Czech Republic
| | - T. Matsuzawa
- University of Nagasaki, 1-1-1 Manabino, Nagayo-cho, Nishi-Sonogi-gun, Nagasaki 851-2195, Japan
| | - T. Yaguchi
- Medical Mycology Research Center, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8673, Japan
| | - Y. Horie
- Medical Mycology Research Center, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8673, Japan
| | - A. Nováková
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the CAS, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - J.C. Frisvad
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - J.J. Talbot
- Sydney School of Veterinary Science, Faculty of Science, and Marie Bashir Institute of Infectious Diseases & Biosecurity, University of Sydney, Camperdown, NSW, Australia
| | - M. Kolařík
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the CAS, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
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286
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Crespo LC, Domènech M, Enguídanos A, Malumbres-Olarte J, Cardoso P, Moya-Laraño J, Frías-López C, Macías-Hernández N, De Mas E, Mazzuca P, Mora E, Opatova V, Planas E, Ribera C, Roca-Cusachs M, Ruiz D, Sousa P, Tonzo V, Arnedo MA. A DNA barcode-assisted annotated checklist of the spider (Arachnida, Araneae) communities associated to white oak woodlands in Spanish National Parks. Biodivers Data J 2018; 6:e29443. [PMID: 30532624 PMCID: PMC6284012 DOI: 10.3897/bdj.6.e29443] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/08/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND A large scale semi-quantitative biodiversity assessment was conducted in white oak woodlands in areas included in the Spanish Network of National Parks, as part of a project aimed at revealing biogeographic patterns and identify biodiversity drivers. The semi-quantitative COBRA sampling protocol was conducted in sixteen 1-ha plots across six national parks using a nested design. All adult specimens were identified to species level based on morphology. Uncertain delimitations and identifications due to either limited information of diagnostic characters or conflicting taxonomy were further investigated using DNA barcode information. NEW INFORMATION We identified 376 species belonging to 190 genera in 39 families, from the 8,521 adults found amongst the 20,539 collected specimens. Faunistic results include the discovery of 7 new species to the Iberian Peninsula, 3 new species to Spain and 11 putative new species to science. As largely expected by environmental features, the southern parks showed a higher proportion of Iberian and Mediterranean species than the northern parks, where the Palearctic elements were largely dominant. The analysis of approximately 3,200 DNA barcodes generated in the present study, corroborated and provided finer resolution to the morphologically based delimitation and identification of specimens in some taxonomically challenging families. Specifically, molecular data confirmed putative new species with diagnosable morphology, identified overlooked lineages that may constitute new species, confirmed assignment of specimens of unknown sexes to species and identified cases of misidentifications and phenotypic polymorphisms.
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Affiliation(s)
- Luís C Crespo
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014, Helsinki, Finland Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014HelsinkiFinland
| | - Marc Domènech
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Alba Enguídanos
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Jagoba Malumbres-Olarte
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014, Helsinki, FinlandLaboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014HelsinkiFinland
- cE3c - Centre for Ecology, Evolution and Environmental Changes, University of the Azores; Rua Capitão João d´Ávila, Pico da Urze, 9700-042 , Angra do Heroísmo, Terceira, Azores, PortugalcE3c - Centre for Ecology, Evolution and Environmental Changes, University of the Azores; Rua Capitão João d´Ávila, Pico da Urze, 9700-042 Angra do Heroísmo, Terceira, AzoresPortugal
| | - Pedro Cardoso
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014, Helsinki, FinlandLaboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014HelsinkiFinland
| | - Jordi Moya-Laraño
- Department of Functional and Evolutionary Ecology, Estación Experimenta de Zonas Áridas (EEZA, CSIC); Carretera de Sacramento, s/n. La Cañada de San Urbano 04120, Almeria, Spain Department of Functional and Evolutionary Ecology, Estación Experimenta de Zonas Áridas (EEZA, CSIC); Carretera de Sacramento, s/n. La Cañada de San Urbano 04120AlmeriaSpain
| | - Cristina Frías-López
- Department of Genetics, Microbiology and Statistics, & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Genetics, Microbiology and Statistics, & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Nuria Macías-Hernández
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014, Helsinki, FinlandLaboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki; PO Box 17, 00014HelsinkiFinland
- Island Ecology and Evolution Research Group, Instituto de Productos Naturales y Agrobiologíıa, C/Astrofísico Francisco Sánchez 3, La Laguna, Tenerife, Canary Islands, SpainIsland Ecology and Evolution Research Group, Instituto de Productos Naturales y Agrobiologíıa, C/Astrofísico Francisco Sánchez 3La Laguna, Tenerife, Canary IslandsSpain
| | - Eva De Mas
- Department of Functional and Evolutionary Ecology, Estación Experimenta de Zonas Áridas (EEZA, CSIC); Carretera de Sacramento, s/n. La Cañada de San Urbano 04120, Almeria, SpainDepartment of Functional and Evolutionary Ecology, Estación Experimenta de Zonas Áridas (EEZA, CSIC); Carretera de Sacramento, s/n. La Cañada de San Urbano 04120AlmeriaSpain
| | - Paola Mazzuca
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Elisa Mora
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Vera Opatova
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
- Department of Entomology and Nematology, University of California, Davis, CA 95616, Davis, United States of AmericaDepartment of Entomology and Nematology, University of California, Davis, CA 95616DavisUnited States of America
| | - Enric Planas
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Carles Ribera
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Marcos Roca-Cusachs
- Laboratory of Systematic Entomology in the Department of Applied Biology of Chungnam National University, Daejeon, Korea, SouthLaboratory of Systematic Entomology in the Department of Applied Biology of Chungnam National UniversityDaejeonKorea, South
| | - Dolores Ruiz
- Department of Functional and Evolutionary Ecology, Estación Experimenta de Zonas Áridas (EEZA, CSIC); Carretera de Sacramento, s/n. La Cañada de San Urbano 04120, Almeria, SpainDepartment of Functional and Evolutionary Ecology, Estación Experimenta de Zonas Áridas (EEZA, CSIC); Carretera de Sacramento, s/n. La Cañada de San Urbano 04120AlmeriaSpain
| | - Pedro Sousa
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vila do Conde, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do PortoVila do CondePortugal
| | - Vanina Tonzo
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
| | - Miquel A. Arnedo
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, SpainDepartment of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, E-08028BarcelonaSpain
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287
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Luo A, Ling C, Ho SYW, Zhu CD. Comparison of Methods for Molecular Species Delimitation Across a Range of Speciation Scenarios. Syst Biol 2018; 67:830-846. [PMID: 29462495 PMCID: PMC6101526 DOI: 10.1093/sysbio/syy011] [Citation(s) in RCA: 220] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Accepted: 02/10/2018] [Indexed: 11/14/2022] Open
Abstract
Species are fundamental units in biological research and can be defined on the basis of various operational criteria. There has been growing use of molecular approaches for species delimitation. Among the most widely used methods, the generalized mixed Yule-coalescent (GMYC) and Poisson tree processes (PTP) were designed for the analysis of single-locus data but are often applied to concatenations of multilocus data. In contrast, the Bayesian multispecies coalescent approach in the software Bayesian Phylogenetics and Phylogeography (BPP) explicitly models the evolution of multilocus data. In this study, we compare the performance of GMYC, PTP, and BPP using synthetic data generated by simulation under various speciation scenarios. We show that in the absence of gene flow, the main factor influencing the performance of these methods is the ratio of population size to divergence time, while number of loci and sample size per species have smaller effects. Given appropriate priors and correct guide trees, BPP shows lower rates of species overestimation and underestimation, and is generally robust to various potential confounding factors except high levels of gene flow. The single-threshold GMYC and the best strategy that we identified in PTP generally perform well for scenarios involving more than a single putative species when gene flow is absent, but PTP outperforms GMYC when fewer species are involved. Both methods are more sensitive than BPP to the effects of gene flow and potential confounding factors. Case studies of bears and bees further validate some of the findings from our simulation study, and reveal the importance of using an informed starting point for molecular species delimitation. Our results highlight the key factors affecting the performance of molecular species delimitation, with potential benefits for using these methods within an integrative taxonomic framework.
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Affiliation(s)
- Arong Luo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Cheng Ling
- Department of Computer Science and Technology, College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Simon Y W Ho
- School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Chao-Dong Zhu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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288
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Perdices A, Ozeren CS, Erkakan F, Freyhof J. Diversity of spined loaches from Asia Minor in a phylogenetic context (Teleostei: Cobitidae). PLoS One 2018; 13:e0205678. [PMID: 30308027 PMCID: PMC6181420 DOI: 10.1371/journal.pone.0205678] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 09/29/2018] [Indexed: 11/19/2022] Open
Abstract
Accurate determination of species diversity in areas of high endemicity, particularly those lacking comprehensive systematic knowledge, represents a challenge for both taxonomists and conservationists. This need is particularly evident in areas greatly affected by anthropogenic disturbances such as the Eastern Mediterranean and its freshwater environments. To improve our knowledge of Eastern Mediterranean freshwater fishes, we phylogenetically studied Western Palearctic Cobitis species, focusing on those found in Turkey. Overall, our results provide a robust framework to assess the number of species of Cobitis. Phylogenetic reconstructions based on mitochondrial (cyt b) and nuclear (RAG1) sequences show seven major clades (Clades 1-7) grouping all Western Palearctic Cobitis species, except C. melanoleuca. In general, each major clade comprises Cobitis species that inhabit geographically close areas and have similar secondary sexual characters. Multiple divergent lineages were identified in our analyses, some of which were highly divergent such as the ones inhabiting Turkish freshwaters. Moreover, in some analyses, several of the identified lineages were incongruent with a priori defined species. Furthermore, our analyses identified eight potentially new candidate species, six that had been suggested in previous studies and two that are reported here for the first time. Our results reveal Turkey as the area with the greatest diversity of spined loaches in the Mediterranean.
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Affiliation(s)
- Anabel Perdices
- Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales, CSIC, Madrid, Spain
- * E-mail:
| | - Cevher S. Ozeren
- Department of Biology, Faculty of Science, University of Ankara, Ankara, Turkey
| | - Füsun Erkakan
- Department of Biology, Faculty of Science, Hacettepe University, Beytepe Campus, Ankara, Turkey
| | - Jörg Freyhof
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany
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289
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Rimington WR, Pressel S, Duckett JG, Field KJ, Read DJ, Bidartondo MI. Ancient plants with ancient fungi: liverworts associate with early-diverging arbuscular mycorrhizal fungi. Proc Biol Sci 2018; 285:20181600. [PMID: 30305437 PMCID: PMC6191707 DOI: 10.1098/rspb.2018.1600] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/21/2018] [Indexed: 01/12/2023] Open
Abstract
Arbuscular mycorrhizas are widespread in land plants including liverworts, some of the closest living relatives of the first plants to colonize land 500 million years ago (MYA). Previous investigations reported near-exclusive colonization of liverworts by the most recently evolved arbuscular mycorrhizal fungi, the Glomeraceae, indicating a recent acquisition from flowering plants at odds with the widely held notion that arbuscular mycorrhizal-like associations in liverworts represent the ancestral symbiotic condition in land plants. We performed an analysis of symbiotic fungi in 674 globally collected liverworts using molecular phylogenetics and electron microscopy. Here, we show every order of arbuscular mycorrhizal fungi colonizes early-diverging liverworts, with non-Glomeraceae being at least 10 times more common than in flowering plants. Arbuscular mycorrhizal fungi in liverworts and other ancient plant lineages (hornworts, lycopods, and ferns) were delimited into 58 taxa and 36 singletons, of which at least 43 are novel and specific to liverworts. The discovery that early plant lineages are colonized by early-diverging fungi supports the hypothesis that arbuscular mycorrhizas are an ancestral symbiosis for all land plants.
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Affiliation(s)
- William R Rimington
- Department of Life Sciences, Imperial College London, London SW7 2AZ, UK
- Life Sciences Department, Algae, Fungi and Plants Division, Natural History Museum, London SW7 5BD, UK
- Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond TW9 3DS, UK
| | - Silvia Pressel
- Life Sciences Department, Algae, Fungi and Plants Division, Natural History Museum, London SW7 5BD, UK
| | - Jeffrey G Duckett
- Life Sciences Department, Algae, Fungi and Plants Division, Natural History Museum, London SW7 5BD, UK
| | - Katie J Field
- Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - David J Read
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Martin I Bidartondo
- Department of Life Sciences, Imperial College London, London SW7 2AZ, UK
- Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond TW9 3DS, UK
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290
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Bourke BP, Conn JE, de Oliveira TMP, Chaves LSM, Bergo ES, Laporta GZ, Sallum MAM. Exploring malaria vector diversity on the Amazon Frontier. Malar J 2018; 17:342. [PMID: 30261932 PMCID: PMC6161421 DOI: 10.1186/s12936-018-2483-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 09/10/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Deforestation in the Amazon and the social vulnerability of its settler communities has been associated with increased malaria incidence. The feeding biology of the most important malaria vectors in the region, notably Nyssorhynchus darlingi, compounds efforts to control vectors and reduce transmission of what has become known as "Frontier Malaria". Exploring Anophelinae mosquito diversity is fundamental to understanding the species responsible for transmission and developing appropriate management and intervention strategies for malaria control in the Amazon River basin. METHODS This study describes Anophelinae mosquito diversity from settler communities affected by Frontier Malaria in the states of Acre, Amazonas and Rondônia by analysing COI gene data using cluster and tree-based species delimitation approaches. RESULTS In total, 270 specimens from collection sites were sequenced and these were combined with 151 reference (GenBank) sequences in the analysis to assist in species identification. Conservative estimates found that the number of species collected at these sites was between 23 (mPTP partition) and 27 (strict ABGD partition) species, up to 13 of which appeared to be new. Nyssorhynchus triannulatus and Nyssorhynchus braziliensis displayed exceptional levels of intraspecific genetic diversity but there was little to no support for putative species complex status. CONCLUSIONS This study demonstrates that Anophelinae mosquito diversity continues to be underestimated in poorly sampled areas where frontier malaria is a major public health concern. The findings will help shape future studies of vector incrimination and transmission dynamics in these areas and support efforts to develop more effective vector control and transmission reduction strategies in settler communities in the Amazon River basin.
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Affiliation(s)
- Brian P Bourke
- Department of Epidemiology, Faculty of Public Health, University of São Paulo, São Paulo, SP, Brazil.
| | - Jan E Conn
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, 12159, USA
- Department of Biomedical Sciences, School of Public Health, State University of New York-Albany, Albany, NY, 12222, USA
| | - Tatiane M P de Oliveira
- Department of Epidemiology, Faculty of Public Health, University of São Paulo, São Paulo, SP, Brazil
| | - Leonardo S M Chaves
- Department of Epidemiology, Faculty of Public Health, University of São Paulo, São Paulo, SP, Brazil
| | - Eduardo S Bergo
- Superintendência de Controle de Endemias, Secretaria de Estado da Saúde de São Paulo, Araraquara, SP, Brazil
| | - Gabriel Z Laporta
- Setor de Pós-graduação, Pesquisa e Inovação, Faculdade de Medicina do ABC, Santo André, SP, Brazil
| | - Maria A M Sallum
- Department of Epidemiology, Faculty of Public Health, University of São Paulo, São Paulo, SP, Brazil
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291
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Aksenova OV, Bolotov IN, Gofarov MY, Kondakov AV, Vinarski MV, Bespalaya YV, Kolosova YS, Palatov DM, Sokolova SE, Spitsyn VM, Tomilova AA, Travina OV, Vikhrev IV. Species Richness, Molecular Taxonomy and Biogeography of the Radicine Pond Snails (Gastropoda: Lymnaeidae) in the Old World. Sci Rep 2018; 8:11199. [PMID: 30046044 PMCID: PMC6060155 DOI: 10.1038/s41598-018-29451-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 07/12/2018] [Indexed: 11/09/2022] Open
Abstract
The radicine pond snails represent a species-rich and widely distributed group, many species of which are key vectors of human and animal trematodoses. Here we clarify the taxonomy, distribution and evolutionary biogeography of the radicine lymnaeids in the Old World based on the most comprehensive multi-locus molecular dataset sampled to date. We show that the subfamily Amphipepleinae is monophyletic and contains at least ten genus-level clades: Radix Montfort, 1810, Ampullaceana Servain, 1881, Peregriana Servain, 1881, Tibetoradix Bolotov, Vinarski & Aksenova gen. nov., Kamtschaticana Kruglov & Starobogatov, 1984, Orientogalba Kruglov & Starobogatov, 1985, Cerasina Kobelt, 1881, Myxas G. B. Sowerby I, 1822, Bullastra Bergh, 1901, and Austropeplea Cotton, 1942. With respect to our phylogeny, species-delimitation model and morphological data, the Old World fauna includes 35 biological species of radicines. Tibet and Eastern Europe harbor the richest faunas, while East Asia and Africa appear to be the most species-poor areas. The radicine clade could have originated near the Cretaceous - Paleocene boundary. The Miocene great lakes in Eurasia seems to be the most important evolutionary hotspots shaping spatial patterns of recent species richness. Finally, we present the first DNA barcode reference library for the reliable molecular identification of species within this group.
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Affiliation(s)
- Olga V Aksenova
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Ivan N Bolotov
- Northern Arctic Federal University, Arkhangelsk, Russia.
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia.
| | - Mikhail Yu Gofarov
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Alexander V Kondakov
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | | | - Yulia V Bespalaya
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Yulia S Kolosova
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | | | - Svetlana E Sokolova
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Vitaly M Spitsyn
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Alena A Tomilova
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Oksana V Travina
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
| | - Ilya V Vikhrev
- Northern Arctic Federal University, Arkhangelsk, Russia
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk, Russia
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292
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Thézé J, Lopez-Vaamonde C, Cory JS, Herniou EA. Biodiversity, Evolution and Ecological Specialization of Baculoviruses: A Treasure Trove for Future Applied Research. Viruses 2018; 10:E366. [PMID: 29997344 PMCID: PMC6071083 DOI: 10.3390/v10070366] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 07/02/2018] [Accepted: 07/05/2018] [Indexed: 11/16/2022] Open
Abstract
The Baculoviridae, a family of insect-specific large DNA viruses, is widely used in both biotechnology and biological control. Its applied value stems from millions of years of evolution influenced by interactions with their hosts and the environment. To understand how ecological interactions have shaped baculovirus diversification, we reconstructed a robust molecular phylogeny using 217 complete genomes and ~580 isolates for which at least one of four lepidopteran core genes was available. We then used a phylogenetic-concept-based approach (mPTP) to delimit 165 baculovirus species, including 38 species derived from new genetic data. Phylogenetic optimization of ecological characters revealed a general pattern of host conservatism punctuated by occasional shifts between closely related hosts and major shifts between lepidopteran superfamilies. Moreover, we found significant phylogenetic conservatism between baculoviruses and the type of plant growth (woody or herbaceous) associated with their insect hosts. In addition, we found that colonization of new ecological niches sometimes led to viral radiation. These macroevolutionary patterns show that besides selection during the infection process, baculovirus diversification was influenced by tritrophic interactions, explained by their persistence on plants and interactions in the midgut during horizontal transmission. This complete eco-evolutionary framework highlights the potential innovations that could still be harnessed from the diversity of baculoviruses.
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Affiliation(s)
- Julien Thézé
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261, CNRS-Université de Tours, 37200 Tours, France.
- Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3SY, UK.
| | - Carlos Lopez-Vaamonde
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261, CNRS-Université de Tours, 37200 Tours, France.
- INRA, UR633 Zoologie Forestière, 45075 Orléans, France.
| | - Jenny S Cory
- Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.
| | - Elisabeth A Herniou
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261, CNRS-Université de Tours, 37200 Tours, France.
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293
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Modha S, Thanki AS, Cotmore SF, Davison AJ, Hughes J. ViCTree: an automated framework for taxonomic classification from protein sequences. Bioinformatics 2018; 34:2195-2200. [PMID: 29474519 PMCID: PMC6022645 DOI: 10.1093/bioinformatics/bty099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 01/08/2018] [Accepted: 02/20/2018] [Indexed: 11/14/2022] Open
Abstract
Motivation The increasing rate of submission of genetic sequences into public databases is providing a growing resource for classifying the organisms that these sequences represent. To aid viral classification, we have developed ViCTree, which automatically integrates the relevant sets of sequences in NCBI GenBank and transforms them into an interactive maximum likelihood phylogenetic tree that can be updated automatically. ViCTree incorporates ViCTreeView, which is a JavaScript-based visualization tool that enables the tree to be explored interactively in the context of pairwise distance data. Results To demonstrate utility, ViCTree was applied to subfamily Densovirinae of family Parvoviridae. This led to the identification of six new species of insect virus. Availability and implementation ViCTree is open-source and can be run on any Linux- or Unix-based computer or cluster. A tutorial, the documentation and the source code are available under a GPL3 license, and can be accessed at http://bioinformatics.cvr.ac.uk/victree_web/. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Sejal Modha
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - Anil S Thanki
- Earlham Institute, Norwich Research Park, Norwich, UK
| | | | - Andrew J Davison
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - Joseph Hughes
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
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294
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Bacela-Spychalska K, Wróblewski P, Mamos T, Grabowski M, Rigaud T, Wattier R, Rewicz T, Konopacka A, Ovcharenko M. Europe-wide reassessment of Dictyocoela (Microsporidia) infecting native and invasive amphipods (Crustacea): molecular versus ultrastructural traits. Sci Rep 2018; 8:8945. [PMID: 29895884 PMCID: PMC5997659 DOI: 10.1038/s41598-018-26879-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 05/17/2018] [Indexed: 11/11/2022] Open
Abstract
Microsporidia are common parasites infecting animals and protists. They are specifically common pathogens of amphipods (Crustacea, Malacostraca), with Dictyocoela spp. being particularly frequent and highly prevalent, exhibiting a range of phenotypic and ecological effects. Until now, seven species of Dictyocoela were defined, predominantly based on the genetic distance. However, neither the taxonomic status of this provisionally erected genus (based on eight novel sequences and one micrograph of the spore), nor its internal phylogenetic relationships have been clearly revealed. The formal description of the genus and of most of the putative species are still lacking. Here we aimed to fill this gap and performed both ultrastructural and molecular studies (based on SSU, ITS and partial LSU) using different species delimitation methods. As a consensus of these results and following conservative data interpretation, we propose to distinguish five species infecting gammarid hosts, and to keep the names introduced by the authors of the type sequences: Dictyocoela duebenum, D. muelleri, D. berillonum and D. roeselum. We provide full descriptions of these species. Moreover, thanks to our extensive sampling, we extend the known host and geographic range of these Microsporidia.
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Affiliation(s)
- Karolina Bacela-Spychalska
- Department of Invertebrate Zoology and Hydrobiology, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland.
| | - Piotr Wróblewski
- Witold Stefański Institute of Parasitology of the Polish Academy of Sciences, 51/55 Twarda Street, 00-818, Warsaw, Poland
| | - Tomasz Mamos
- Department of Invertebrate Zoology and Hydrobiology, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland
| | - Michał Grabowski
- Department of Invertebrate Zoology and Hydrobiology, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland
| | - Thierry Rigaud
- Laboratoire Biogéosciences, UMR CNRS 6282, Université de Bourgogne Franche Comté, 6 boulevard Gabriel, 21000, Dijon, France
| | - Remi Wattier
- Laboratoire Biogéosciences, UMR CNRS 6282, Université de Bourgogne Franche Comté, 6 boulevard Gabriel, 21000, Dijon, France
| | - Tomasz Rewicz
- Department of Invertebrate Zoology and Hydrobiology, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland
| | - Alicja Konopacka
- Department of Invertebrate Zoology and Hydrobiology, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland
| | - Mykola Ovcharenko
- Witold Stefański Institute of Parasitology of the Polish Academy of Sciences, 51/55 Twarda Street, 00-818, Warsaw, Poland
- Institute of Biology and Environmental Protection, Pomeranian Academy High School, 22b Arciszewskiego Street, 76-200, Słupsk, Poland
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295
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Machado VN, Collins RA, Ota RP, Andrade MC, Farias IP, Hrbek T. One thousand DNA barcodes of piranhas and pacus reveal geographic structure and unrecognised diversity in the Amazon. Sci Rep 2018; 8:8387. [PMID: 29849152 PMCID: PMC5976771 DOI: 10.1038/s41598-018-26550-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 05/10/2018] [Indexed: 11/25/2022] Open
Abstract
Piranhas and pacus (Characiformes: Serrasalmidae) are a charismatic but understudied family of Neotropical fishes. Here, we analyse a DNA barcode dataset comprising 1,122 specimens, 69 species, 16 genera, 208 localities, and 34 major river drainages in order to make an inventory of diversity and to highlight taxa and biogeographic areas worthy of further sampling effort and conservation protection. Using four methods of species discovery-incorporating both tree and distance based techniques-we report between 76 and 99 species-like clusters, i.e. between 20% and 33% of a priori identified taxonomic species were represented by more than one mtDNA lineage. There was a high degree of congruence between clusters, with 60% supported by three or four methods. Pacus of the genus Myloplus exhibited the most intraspecific variation, with six of the 13 species sampled found to have multiple lineages. Conversely, piranhas of the Serrasalmus rhombeus group proved difficult to delimit with these methods due to genetic similarity and polyphyly. Overall, our results recognise substantially underestimated diversity in the serrasalmids, and emphasise the Guiana and Brazilian Shield rivers as biogeographically important areas with multiple cases of across-shield and within-shield diversifications. We additionally highlight the distinctiveness and complex phylogeographic history of rheophilic taxa in particular, and suggest multiple colonisations of these habitats by different serrasalmid lineages.
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Affiliation(s)
- Valeria N Machado
- Laboratório de Evolução e Genétic Animal, Departamento de Genética, Universidade Federal do Amazonas, Av., General Rodrigo Otávio Jordão, 3000, 69077-000, Manaus, AM, Brazil
| | - Rupert A Collins
- Laboratório de Evolução e Genétic Animal, Departamento de Genética, Universidade Federal do Amazonas, Av., General Rodrigo Otávio Jordão, 3000, 69077-000, Manaus, AM, Brazil.
- School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK.
| | - Rafaela P Ota
- Programa de Pós-Graduação em Biologia de Água Doce e Pesca Interior, Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, 2936, CP 2223, Petrópolis, 69080-971, Manaus, AM, Brazil
| | - Marcelo C Andrade
- Programa de Pós-Graduação em Ecologia Aquática e Pesca, Instituto de Ciências Biológicas, Universidade Federal do Pará, Av. Perimetral, 2651, Terra Firme, 66040-830, Belém, PA, Brazil
| | - Izeni P Farias
- Laboratório de Evolução e Genétic Animal, Departamento de Genética, Universidade Federal do Amazonas, Av., General Rodrigo Otávio Jordão, 3000, 69077-000, Manaus, AM, Brazil
| | - Tomas Hrbek
- Laboratório de Evolução e Genétic Animal, Departamento de Genética, Universidade Federal do Amazonas, Av., General Rodrigo Otávio Jordão, 3000, 69077-000, Manaus, AM, Brazil.
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296
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Sundberg H, Kruys Å, Bergsten J, Ekman S. Position specificity in the genus Coreomyces ( Laboulbeniomycetes, Ascomycota). Fungal Syst Evol 2018; 1:217-228. [PMID: 32490367 PMCID: PMC7259236 DOI: 10.3114/fuse.2018.01.09] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
To study position specificity in the insect-parasitic fungal genus Coreomyces (Laboulbeniaceae, Laboulbeniales), we sampled corixid hosts (Corixidae, Heteroptera) in southern Scandinavia. We detected Coreomyces thalli in five different positions on the hosts. Thalli from the various positions grouped in four distinct clusters in the resulting gene trees, distinctly so in the ITS and LSU of the nuclear ribosomal DNA, less so in the SSU of the nuclear ribosomal DNA and the mitochondrial ribosomal DNA. Thalli from the left side of abdomen grouped in a single cluster, and so did thalli from the ventral right side. Thalli in the mid-ventral position turned out to be a mix of three clades, while thalli growing dorsally grouped with thalli from the left and right abdominal clades. The mid-ventral and dorsal positions were found in male hosts only. The position on the left hemelytron was shared by members from two sister clades. Statistical analyses demonstrate a significant positive correlation between clade and position on the host, but also a weak correlation between host sex and clade membership. These results indicate that sex-of-host specificity may be a non-existent extreme in a continuum, where instead weak pREFERENCES for one host sex may turn out to be frequent.
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Affiliation(s)
- H Sundberg
- Systematic Biology, Department of Organismal Biology, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden
| | - Å Kruys
- Museum of Evolution, Uppsala University, Uppsala, Sweden
| | - J Bergsten
- Department of Zoology, Swedish Museum of Natural History, Stockholm, Sweden
| | - S Ekman
- Museum of Evolution, Uppsala University, Uppsala, Sweden
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297
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Manzanilla V, Kool A, Nguyen Nhat L, Nong Van H, Le Thi Thu H, de Boer HJ. Phylogenomics and barcoding of Panax: toward the identification of ginseng species. BMC Evol Biol 2018; 18:44. [PMID: 29614961 PMCID: PMC5883351 DOI: 10.1186/s12862-018-1160-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 03/21/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The economic value of ginseng in the global medicinal plant trade is estimated to be in excess of US$2.1 billion. At the same time, the evolutionary placement of ginseng (Panax ginseng) and the complex evolutionary history of the genus is poorly understood despite several molecular phylogenetic studies. In this study, we use a full plastome phylogenomic framework to resolve relationships in Panax and to identify molecular markers for species discrimination. RESULTS We used high-throughput sequencing of MBD2-Fc fractionated Panax DNA to supplement publicly available plastid genomes to create a phylogeny based on fully assembled and annotated plastid genomes from 60 accessions of 8 species. The plastome phylogeny based on a 163 kbp matrix resolves the sister relationship of Panax ginseng with P. quinquefolius. The closely related species P. vietnamensis is supported as sister of P. japonicus. The plastome matrix also shows that the markers trnC-rps16, trnS-trnG, and trnE-trnM could be used for unambiguous molecular identification of all the represented species in the genus. CONCLUSIONS MBD2 depletion reduces the cost of plastome sequencing, which makes it a cost-effective alternative to Sanger sequencing based DNA barcoding for molecular identification. The plastome phylogeny provides a robust framework that can be used to study the evolution of morphological characters and biosynthesis pathways of ginsengosides for phylogenetic bioprospecting. Molecular identification of ginseng species is essential for authenticating ginseng in international trade and it provides an incentive for manufacturers to create authentic products with verified ingredients.
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Affiliation(s)
- V Manzanilla
- The Natural History Museum, University of Oslo, Oslo, Norway.
| | - A Kool
- The Natural History Museum, University of Oslo, Oslo, Norway
| | - L Nguyen Nhat
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - H Nong Van
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - H Le Thi Thu
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - H J de Boer
- The Natural History Museum, University of Oslo, Oslo, Norway
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298
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Marki PZ, Fjeldså J, Irestedt M, Jønsson KA. Molecular phylogenetics and species limits in a cryptically coloured radiation of Australo-Papuan passerine birds (Pachycephalidae: Colluricincla). Mol Phylogenet Evol 2018. [PMID: 29526804 DOI: 10.1016/j.ympev.2018.02.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Detailed knowledge of species limits is an essential component of the study of biodiversity. Although accurate species delimitation usually requires detailed knowledge of both genetic and phenotypic variation, such variation may be limited or unavailable for some groups. In this study, we reconstruct a molecular phylogeny for all currently recognized species and subspecies of Australasian shrikethrushes (Colluricincla), including the first sequences of the poorly known C. tenebrosa. Using a novel method for species delimitation, the multi-rate Poisson Tree Process (mPTP), in concordance with the phylogenetic data, we estimate species limits in this genetically diverse, but phenotypically subtly differentiated complex of birds. In line with previous studies, we find that one species, the little shrikethrush (C. megarhyncha) is characterized by deep divergences among populations. Delimitation results suggest that these clades represent distinct species and we consequently propose a new classification. Furthermore, our findings suggest that C. megarhyncha melanorhyncha of Biak Island does not belong in this genus, but is nested within the whistlers (Pachycephala) as sister to P. phaionota. This study represents a useful example of species delimitation when phenotypic variation is limited or poorly defined.
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Affiliation(s)
- Petter Z Marki
- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark; Natural History Museum, University of Oslo, PO Box 1172, Blindern, 0318 Oslo, Norway.
| | - Jon Fjeldså
- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark
| | - Martin Irestedt
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, SE-10405 Stockholm, Sweden
| | - Knud A Jønsson
- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark
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299
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Hubka V, Nováková A, Jurjević Ž, Sklenář F, Frisvad JC, Houbraken J, Arendrup MC, Jørgensen KM, Siqueira JPZ, Gené J, Kolařík M. Polyphasic data support the splitting of Aspergillus candidus into two species; proposal of Aspergillus dobrogensis sp. nov. Int J Syst Evol Microbiol 2018; 68:995-1011. [PMID: 29458472 DOI: 10.1099/ijsem.0.002583] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Aspergillus candidus is a species frequently isolated from stored grain, food, indoor environments, soil and occasionally also from clinical material. Recent bioprospecting studies highlighted the potential of using A. candidus and its relatives in various industrial sectors as a result of their significant production of enzymes and bioactive compounds. A high genetic variability was observed among A. candidus isolates originating from various European countries and the USA, that were mostly isolated from indoor environments, caves and clinical material. The A. candidus sensu lato isolates were characterized by DNA sequencing of four genetic loci, and agreement between molecular species delimitation results, morphological characters and exometabolite spectra were studied. Classical phylogenetic methods (maximum likelihood, Bayesian inference) and species delimitation methods based on the multispecies coalescent model supported recognition of up to three species in A. candidus sensu lato. After evaluation of phenotypic data, a broader species concept was adopted, and only one new species, Aspergillus dobrogensis, was proposed. This species is represented by 22 strains originating from seven countries (ex-type strain CCF 4651T=NRRL 62821T=IBT 32697T=CBS 143370T) and its differentiation from A. candidus is relevant for bioprospecting studies because these species have different exometabolite profiles. Evaluation of the antifungal susceptibility of section Candidi members to six antifungals using the reference EUCAST method showed that all species have low minimum inhibitory concentrations for all tested antifungals. These results suggest applicability of a wide spectrum of antifungal agents for treatment of infections caused by species from section Candidi.
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Affiliation(s)
- Vit Hubka
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic.,Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic
| | - Alena Nováková
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | | | - František Sklenář
- Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic.,Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jens C Frisvad
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Jos Houbraken
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - Maiken C Arendrup
- Unit of Mycology, Statens Serum Institut, Copenhagen, Denmark.,Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | | | - João P Z Siqueira
- Unitat de Micologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain.,Laboratório de Microbiologia, Faculdade de Medicina de SãoJosé do Rio Preto, São José do Rio Preto, Brazil
| | - Josepa Gené
- Unitat de Micologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Miroslav Kolařík
- Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic.,Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
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300
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Lima SMQ, Berbel-Filho WM, Araújo TFP, Lazzarotto H, Tatarenkov A, Avise JC. Headwater Capture Evidenced by Paleo-Rivers Reconstruction and Population Genetic Structure of the Armored Catfish ( Pareiorhaphis garbei) in the Serra do Mar Mountains of Southeastern Brazil. Front Genet 2017; 8:199. [PMID: 29259623 PMCID: PMC5723395 DOI: 10.3389/fgene.2017.00199] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/21/2017] [Indexed: 11/13/2022] Open
Abstract
Paleo-drainage connections and headwater stream-captures are two main historical processes shaping the distribution of strictly freshwater fishes. Recently, bathymetric-based methods of paleo-drainage reconstruction have opened new possibilities to investigate how these processes have shaped the genetic structure of freshwater organisms. In this context, the present study used paleo-drainage reconstructions and single-locus cluster delimitation analyses to examine genetic structure on the whole distribution of Pareiorhaphis garbei, a ‘near threatened’ armored catfish from the Fluminense freshwater ecoregion in Southeastern Brazil. Sequences of two mitochondrial genes (cytochrome b and cytochrome c oxidase subunit 1) were obtained from five sampling sites in four coastal drainages: Macaé (KAE), São João (SJO), Guapi-Macacu [sub-basins Guapiaçu (GAC) and Guapimirim (GMI)], and Santo Aleixo (SAL). Pronounced genetic structure was found, involving 10 haplotypes for cytB and 6 for coi, with no haplotypes shared between localities. Coalescent-based delineation methods as well as distance-based methods revealed genetic clusters corresponding to each sample site. Paleo-drainage reconstructions showed two putative paleo-rivers: an eastern one connecting KAE and SJO; and a western one merging in the Guanabara Bay (GAC, GMI, and SAL). A disagreement was uncovered between the inferred past riverine connections and current population genetic structure. Although KAE and SJO belong to the same paleo-river, the latter is more closely related to specimens from the Guanabara paleo-river. This discordance between paleo-drainage connections and phylogenetic structure may indicate an ancient stream-capture event in headwaters of this region. Furthermore, all analyses showed high divergence between KAE and the other lineages, suggesting at least one cryptic species in the latter, and that the nominal species should be restricted to the Macaé river basin, its type locality. In this drainage, impacts such as the invasive species and habitat loss can be especially threatening for such species with a narrow range. Our results also suggest that freshwater fishes from headwaters in the Serra do Mar mountains might have different biogeographical patterns than those from the lowlands, indicating a complex and dynamic climatic and geomorphological history.
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Affiliation(s)
- Sergio M Q Lima
- Laboratório de Ictiologia Sistemática e Evolutiva, Departamento de Botânica e Zoologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Brazil.,Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA, United States
| | - Waldir M Berbel-Filho
- Laboratório de Ictiologia Sistemática e Evolutiva, Departamento de Botânica e Zoologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Brazil.,Department of Biosciences, College of Science, Swansea University, Swansea, United Kingdom
| | - Thais F P Araújo
- Laboratório de Ictiologia Sistemática e Evolutiva, Departamento de Botânica e Zoologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - Henrique Lazzarotto
- Laboratório de Ecologia de Peixes, Departamento de Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,California Academy of Sciences, San Francisco, CA, United States
| | - Andrey Tatarenkov
- Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA, United States
| | - John C Avise
- Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA, United States
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