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Gan HY, Hohberg K, Schneider C, Ebner M, Marais E, Miranda T, Lehmitz R, Maggs-Kölling G, Bocherens H. The hidden oases: unveiling trophic dynamics in Namib's fog plant ecosystem. Sci Rep 2024; 14:13334. [PMID: 38858480 PMCID: PMC11164947 DOI: 10.1038/s41598-024-61796-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 05/09/2024] [Indexed: 06/12/2024] Open
Abstract
The Namib Desert is a hyperarid coastal desert where fog is a major moisture source. We hypothesized that the fog-harvesting grass Stipagrostis sabulicola establishes an important ecological niche, termed the "Fog-Plant-Oases" (FPOs), and serves as the primary carbon source for the invertebrate community. To determine this, we measured the natural variations of the stable carbon and nitrogen isotopes (δ13C and δ15N) of invertebrates as well as that of plant biomass and belowground detritus and estimated the contributions of the fog plants in their diets. Our findings revealed a complex trophic structure and demonstrated that S. sabulicola fuels carbon flow from lower to higher trophic levels in the aboveground food web. The distinct δ13C values of bacterial- and fungal-feeding nematodes indicated however the separation of the aboveground niche, which is primarily sustained by S. sabulicola, from the belowground niche, where wind-blown sediments may serve as the main energy source for the soil biota. Our findings further accentuate the critical role of S. sabulicola FPOs in establishing complex trophic dynamics and a distinctive food web within the hyperarid Namib dunes.
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Affiliation(s)
- Huei Ying Gan
- Senckenberg Centre for Human Evolution and Palaeoenvironment, University of Tübingen, Hölderlindstr. 12, 72074, Tübingen, Germany.
| | - Karin Hohberg
- Senckenberg Museum of Natural History Görlitz, Am Museum 1, 02826, Görlitz, Germany
| | - Clément Schneider
- Senckenberg Museum of Natural History Görlitz, Am Museum 1, 02826, Görlitz, Germany
| | - Martin Ebner
- Department of Geosciences, Biogeology, University of Tübingen, Hölderlindstr. 12, 72074, Tübingen, Germany
| | - Eugene Marais
- Gobabeb-Namib Research Institute, Walvis Bay, 13013, Namibia
| | - Tatiana Miranda
- Senckenberg Centre for Human Evolution and Palaeoenvironment, University of Tübingen, Hölderlindstr. 12, 72074, Tübingen, Germany
| | - Ricarda Lehmitz
- Senckenberg Museum of Natural History Görlitz, Am Museum 1, 02826, Görlitz, Germany
| | | | - Hervé Bocherens
- Senckenberg Centre for Human Evolution and Palaeoenvironment, University of Tübingen, Hölderlindstr. 12, 72074, Tübingen, Germany
- Department of Geosciences, Biogeology, University of Tübingen, Hölderlindstr. 12, 72074, Tübingen, Germany
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2
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Gilgenbach C, Vehof J, Wipfler B, Peters RS. Small wasps, big muscles: Fore and hind leg modifications in chalcidoid wasps (Hymenoptera: Chalcidoidea). ARTHROPOD STRUCTURE & DEVELOPMENT 2024; 79:101343. [PMID: 38471388 DOI: 10.1016/j.asd.2024.101343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 02/14/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024]
Abstract
A particularly conspicuous morphological feature in chalcidoid wasps are strikingly modified legs present in both males and females. It evolved convergently multiple times on either fore or hind legs implying strong evolutionary pressure and a prominent function in the wasps' life history. We investigate the external and internal morphology of the modified legs of five species of chalcidoid wasps representing four families (Ooderidae, Heydeniidae, Chalcididae, and Leucospidae), using light microscopy, scanning electron microscopy and micro computed tomography. We aimed to identify shared characteristics as well as differences between genera/species, leg pairs and sexes and to draw first conclusions about the shared or different functions. All species and sexes share the same general leg morphology, with enlarged femur, curved tibia and a huge flexor tibiae muscle. However, there are also genus/species-specific differences such as distinctive spine-like setae on the femur of Oodera spp., or leg pair-specific differences in the position of the extensor tibiae muscle. Shared characteristics imply a common primary function in which strong forces are required to pull the tibia against the femur while differences imply different secondary functions. Both primary and secondary functions have yet to be revealed beyond informed speculations.
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Affiliation(s)
- Carolin Gilgenbach
- Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig Bonn, Centre for Taxonomy and Morphology, Department Arthropoda, Adenauerallee 160, 53113 Bonn, Germany.
| | - Juliane Vehof
- Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig Bonn, Centre for Taxonomy and Morphology, Morphology Lab, Adenauerallee 160, 53113 Bonn, Germany.
| | - Benjamin Wipfler
- Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig Bonn, Centre for Taxonomy and Morphology, Morphology Lab, Adenauerallee 160, 53113 Bonn, Germany.
| | - Ralph S Peters
- Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig Bonn, Centre for Taxonomy and Morphology, Department Arthropoda, Adenauerallee 160, 53113 Bonn, Germany.
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3
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Cruaud A, Rasplus JY, Zhang J, Burks R, Delvare G, Fusu L, Gumovsky A, Huber JT, Janšta P, Mitroiu MD, Noyes JS, van Noort S, Baker A, Böhmová J, Baur H, Blaimer BB, Brady SG, Bubeníková K, Chartois M, Copeland RS, Dale-Skey Papilloud N, Dal Molin A, Dominguez C, Gebiola M, Guerrieri E, Kresslein RL, Krogmann L, Lemmon E, Murray EA, Nidelet S, Nieves-Aldrey JL, Perry RK, Peters RS, Polaszek A, Sauné L, Torréns J, Triapitsyn S, Tselikh EV, Yoder M, Lemmon AR, Woolley JB, Heraty JM. The Chalcidoidea bush of life: evolutionary history of a massive radiation of minute wasps. Cladistics 2024; 40:34-63. [PMID: 37919831 DOI: 10.1111/cla.12561] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 11/04/2023] Open
Abstract
Chalcidoidea are mostly parasitoid wasps that include as many as 500 000 estimated species. Capturing phylogenetic signal from such a massive radiation can be daunting. Chalcidoidea is an excellent example of a hyperdiverse group that has remained recalcitrant to phylogenetic resolution. We combined 1007 exons obtained with Anchored Hybrid Enrichment with 1048 ultra-conserved elements (UCEs) for 433 taxa including all extant families, >95% of all subfamilies, and 356 genera chosen to represent the vast diversity of the superfamily. Going back and forth between the molecular results and our collective knowledge of morphology and biology, we detected bias in the analyses that was driven by the saturation of nucleotide data. Our final results are based on a concatenated analysis of the least saturated exons and UCE datasets (2054 loci, 284 106 sites). Our analyses support an expected sister relationship with Mymarommatoidea. Seven previously recognized families were not monophyletic, so support for a new classification is discussed. Natural history in some cases would appear to be more informative than morphology, as illustrated by the elucidation of a clade of plant gall associates and a clade of taxa with planidial first-instar larvae. The phylogeny suggests a transition from smaller soft-bodied wasps to larger and more heavily sclerotized wasps, with egg parasitism as potentially ancestral for the entire superfamily. Deep divergences in Chalcidoidea coincide with an increase in insect families in the fossil record, and an early shift to phytophagy corresponds with the beginning of the "Angiosperm Terrestrial Revolution". Our dating analyses suggest a middle Jurassic origin of 174 Ma (167.3-180.5 Ma) and a crown age of 162.2 Ma (153.9-169.8 Ma) for Chalcidoidea. During the Cretaceous, Chalcidoidea may have undergone a rapid radiation in southern Gondwana with subsequent dispersals to the Northern Hemisphere. This scenario is discussed with regard to knowledge about the host taxa of chalcid wasps, their fossil record and Earth's palaeogeographic history.
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Affiliation(s)
- Astrid Cruaud
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - Jean-Yves Rasplus
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - Junxia Zhang
- Key Laboratory of Zoological Systematics and Application of Hebei Province, Institute of Life Science and Green Development, College of Life Sciences, Hebei University, Baoding, Hebei, China
- Department of Entomology, University of California Riverside, Riverside, California, USA
| | - Roger Burks
- Department of Entomology, University of California Riverside, Riverside, California, USA
| | - Gérard Delvare
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - Lucian Fusu
- Faculty of Biology, Alexandru Ioan Cuza University, Iasi, Romania
| | - Alex Gumovsky
- Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - John T Huber
- Natural Resources Canada, c/o Canadian National Collection of Insects, Ottawa, Ontario, Canada
| | - Petr Janšta
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
- Department of Entomology, State Museum of Natural History, Stuttgart, Germany
| | | | - John S Noyes
- Insects Division, Natural History Museum, London, UK
| | - Simon van Noort
- Research and Exhibitions Department, South African Museum, Iziko Museums of South Africa, Cape Town, South Africa
- Department of Biological Sciences, University of Cape Town, Private Bag, Rondebosch, 7701, South Africa
| | - Austin Baker
- Department of Entomology, University of California Riverside, Riverside, California, USA
| | - Julie Böhmová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Hannes Baur
- Department of Invertebrates, Natural History Museum Bern, Bern, Switzerland
- Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Bonnie B Blaimer
- Center for Integrative Biodiversity Discovery, Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany
| | - Seán G Brady
- Smithsonian Institution, National Museum of Natural History, Washington, DC, USA
| | - Kristýna Bubeníková
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Marguerite Chartois
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - Robert S Copeland
- Smithsonian Institution, National Museum of Natural History, Washington, DC, USA
- International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
| | | | - Ana Dal Molin
- Departamento de Microbiologia e Parasitologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Chrysalyn Dominguez
- Department of Entomology, University of California Riverside, Riverside, California, USA
| | - Marco Gebiola
- Department of Entomology, University of California Riverside, Riverside, California, USA
| | - Emilio Guerrieri
- Insects Division, Natural History Museum, London, UK
- CNR-Institute for Sustainable Plant Protection (CNR-IPSP), National Research Council of Italy, Portici, Italy
| | - Robert L Kresslein
- Department of Entomology, University of California Riverside, Riverside, California, USA
| | - Lars Krogmann
- Department of Entomology, State Museum of Natural History, Stuttgart, Germany
- Institute of Zoology, University of Hohenheim, Stuttgart, Germany
| | - Emily Lemmon
- Department of Biological Science, Florida State University, Tallahassee, Florida, USA
| | - Elizabeth A Murray
- Department of Entomology, Washington State University, Pullman, Washington, USA
| | - Sabine Nidelet
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | | | - Ryan K Perry
- Department of Plant Sciences, California Polytechnic State University, San Luis Obispo, California, USA
| | - Ralph S Peters
- Zoologisches Forschungsmuseum Alexander Koenig, Leibniz Institute for the Analysis of Biodiversity Change, Bonn, Germany
| | | | - Laure Sauné
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - Javier Torréns
- Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-CONICET), Anillaco, Argentina
| | - Serguei Triapitsyn
- Department of Entomology, University of California Riverside, Riverside, California, USA
| | | | - Matthew Yoder
- Illinois Natural History Survey, University of Illinois, Champaign, Illinois, USA
| | - Alan R Lemmon
- Department of Scientific Computing, Florida State University, Dirac Science Library, Tallahassee, Florida, USA
| | - James B Woolley
- Department of Entomology, Texas A&M University, College Station, Texas, USA
| | - John M Heraty
- Department of Entomology, University of California Riverside, Riverside, California, USA
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Simutnik SA, Pankowski MV, Perkovsky EE. A new genus and species of Encyrtidae (Hymenoptera: Chalcidoidea) with a four-segmented funicle from late Eocene Baltic amber. Zootaxa 2023; 5389:119-127. [PMID: 38221038 DOI: 10.11646/zootaxa.5389.1.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Indexed: 01/16/2024]
Abstract
Electrocerus brevifuniculatus Simutnik gen.etsp. nov. is described and illustrated based on a female specimen from late Eocene Baltic amber. Placement of the new genus in the subfamily Encyrtinae is supported by the presence of a filum spinosum on the linea calva and the hypopygium not reaching the metasomal apex. A key to the genera of late Eocene Encyrtinae is provided. The new taxon differs from all known extinct and most extant encyrtids by its four-segmented female funicle.
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Affiliation(s)
- Serguei A Simutnik
- I.I. Schmalhausen Institute of Zoology; National Academy of Sciences of Ukraine; Kiev; 01030 Ukraine.
| | | | - Evgeny E Perkovsky
- I.I. Schmalhausen Institute of Zoology; National Academy of Sciences of Ukraine; Kiev; 01030 Ukraine; Natural History Museum of Denmark; Universitetsparken 15; Copenhagen 2100; Denmark.
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5
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Simutnik SA, Perkovsky EE. Description of a new genus and species of Encyrtidae (Hymenoptera: Chalcidoidea) from Danish amber, based on a male specimen featuring an antenna with a distinct anellus. Zootaxa 2023; 5369:437-445. [PMID: 38220705 DOI: 10.11646/zootaxa.5369.3.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Indexed: 01/16/2024]
Abstract
Electroanellus belokobylskiji Simutnik gen. et sp. nov. (Hymenoptera: Encyrtidae) is described and illustrated based on a male specimen from late Eocene Danish amber. The presence of an anellus between the pedicel and the first funicular segment is the main difference between the new taxon and most extant encyrtids, as well as all described fossil species. The new fossil also differs from all known Eocene Encyrtidae by its relatively short marginal vein, which is as long as broad. The placement of the new genus in the subfamily Tetracneminae is supported by the absence of the filum spinosum of the linea calva.
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Affiliation(s)
- Serguei A Simutnik
- I.I. Schmalhausen Institute of Zoology; National Academy of Sciences of Ukraine; Kiev; 01030 Ukraine.
| | - Evgeny E Perkovsky
- Natural History Museum of Denmark; Universitetsparken 15; Copenhagen 2100; Denmark.
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6
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Leung K, van de Zande L, Beukeboom LW. Effects of polyploidization and their evolutionary implications are revealed by heritable polyploidy in the haplodiploid wasp Nasonia vitripennis. PLoS One 2023; 18:e0288278. [PMID: 37917617 PMCID: PMC10621845 DOI: 10.1371/journal.pone.0288278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 06/23/2023] [Indexed: 11/04/2023] Open
Abstract
Recurrent polyploidization occurred in the evolutionary history of most Eukaryota. However, how neopolyploid detriment (sterility, gigantism, gene dosage imbalances) has been overcome and even been bridged to evolutionary advantage (gene network diversification, mass radiation, range expansion) is largely unknown, particularly for animals. We used the parasitoid wasp Nasonia vitripennis, a rare insect system with heritable polyploidy, to begin addressing this knowledge gap. In Hymenoptera the sexes have different ploidies (haploid males, diploid females) and neopolyploids (diploid males, triploid females) occur for various species. Although such polyploids are usually sterile, those of N. vitripennis are reproductively capable and can even establish stable polyploid lines. To assess the effects of polyploidization, we compared a long-established polyploid line, the Whiting polyploid line (WPL) and a newly generated transformer knockdown line (tKDL) for fitness traits, absolute gene expression, and cell size and number. WPL polyploids have high male fitness and low female fecundity, while tKDL polyploids have poor male mate competition ability and high fertility. WPL has larger cells and cell number reduction, but the tKDL does not differ in this respect. Expression analyses of two housekeeping genes indicated that gene dosage is linked to sex irrespective of ploidy. Our study suggests that polyploid phenotypic variation may explain why some polyploid lineages thrive and others die out; a commonly proposed but difficult-to-test hypothesis. This documentation of diploid males (tKDL) with impaired competitive mating ability; triploid females with high fitness variation; and hymenopteran sexual dosage compensation (despite the lack of sex chromosomes) all challenges general assumptions on hymenopteran biology. We conclude that polyploidization is dependent on the duplicated genome characteristics and that genomes of different lines are unequally suited to survive diploidization. These results demonstrate the utility of N. vitripennis for delineating mechanisms of animal polyploid evolution, analogous to more advanced polyploid plant models.
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Affiliation(s)
- Kelley Leung
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Louis van de Zande
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Leo W. Beukeboom
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
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7
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Liu W, Xia X, Hoffmann AA, Ding Y, Fang JC, Yu H. Evolution of Wolbachia reproductive and nutritional mutualism: insights from the genomes of two novel strains that double infect the pollinator of dioecious Ficus hirta. BMC Genomics 2023; 24:657. [PMID: 37914998 PMCID: PMC10621080 DOI: 10.1186/s12864-023-09726-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 10/09/2023] [Indexed: 11/03/2023] Open
Abstract
Wolbachia is a genus of maternally inherited endosymbionts that can affect reproduction of their hosts and influence metabolic processes. The pollinator, Valisia javana, is common in the male syconium of the dioecious fig Ficus hirta. Based on a high-quality chromosome-level V. javana genome with PacBio long-read and Illumina short-read sequencing, we discovered a sizeable proportion of Wolbachia sequences and used these to assemble two novel Wolbachia strains belonging to supergroup A. We explored its phylogenetic relationship with described Wolbachia strains based on MLST sequences and the possibility of induction of CI (cytoplasmic incompatibility) in this strain by examining the presence of cif genes known to be responsible for CI in other insects. We also identified mobile genetic elements including prophages and insertion sequences, genes related to biotin synthesis and metabolism. A total of two prophages and 256 insertion sequences were found. The prophage WOjav1 is cryptic (structure incomplete) and WOjav2 is relatively intact. IS5 is the dominant transposon family. At least three pairs of type I cif genes with three copies were found which may cause strong CI although this needs experimental verification; we also considered possible nutritional effects of the Wolbachia by identifying genes related to biotin production, absorption and metabolism. This study provides a resource for further studies of Wolbachia-pollinator-host plant interactions.
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Affiliation(s)
- Wanzhen Liu
- Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xue Xia
- Institute of Plant Protection, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Ary A Hoffmann
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, VIC, Australia
| | - Yamei Ding
- Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Ji-Chao Fang
- Institute of Plant Protection, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Hui Yu
- Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, 510650, China.
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Huber JT, Bolte K, Read JD. The morphological diversity of Mymaridae (Hymenoptera): an atlas of scanning electron micrographs. Part 2. Structure of the mesosoma. Zootaxa 2023; 5337:1-70. [PMID: 38221070 DOI: 10.11646/zootaxa.5337.1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Indexed: 01/16/2024]
Abstract
This is the second in a series of studies that aim to provide a comprehensive overview of the morphological diversity of Mymaridae (Hymenoptera) or fairyflies, a monophyletic family of small parasitic wasps postulated to be the sister group of all other Chalcidoidea. The external morphology of the mesosoma of about 6575 taxa, representing 5565% of the 115 currently valid described genera and subgenera, is described and illustrated with almost 269 scanning electron micrographs, including 77 micrographs of the dorsal, 71 micrographs of the lateral, 59 micrographs of the ventral, 53 micrographs of the anterior, and 9 micrographs of the posterior views of the mesosoma. Twenty annotated figures of the external and major internal structures are given. Two appendices list the morphological terms used, and names of the 75 genera and subgenera of Mymaridae illustrated. The variety of characters and their features that could be used to help define morphologically the genera, and possibly also the species, of Mymaridae is discussed.
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Affiliation(s)
- John T Huber
- Natural Resources Canada c/o Canadian National Collection of Insects; Arachnids and Nematodes; K.W. Neatby Building; 960 Carling Ave.; Ottawa; ON; K1A 0C6; Canada.
| | - Klaus Bolte
- Natural Resources Canada c/o Canadian National Collection of Insects; Arachnids and Nematodes; K.W. Neatby Building; 960 Carling Ave.; Ottawa; ON; K1A 0C6; Canada.
| | - Jennifer D Read
- Natural Resources Canada c/o Canadian National Collection of Insects; Arachnids and Nematodes; K.W. Neatby Building; 960 Carling Ave.; Ottawa; ON; K1A 0C6; Canada.
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9
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Eggs B, Fischer S, Csader M, Mikó I, Rack A, Betz O. Terebra steering in chalcidoid wasps. Front Zool 2023; 20:26. [PMID: 37553687 PMCID: PMC10408236 DOI: 10.1186/s12983-023-00503-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/13/2023] [Indexed: 08/10/2023] Open
Abstract
Various chalcidoid wasps can actively steer their terebra (= ovipositor shaft) in diverse directions, despite the lack of terebral intrinsic musculature. To investigate the mechanisms of these bending and rotational movements, we combined microscopical and microtomographical techniques, together with videography, to analyse the musculoskeletal ovipositor system of the ectoparasitoid pteromalid wasp Lariophagus distinguendus (Förster, 1841) and the employment of its terebra during oviposition. The ovipositor consists of three pairs of valvulae, two pairs of valvifers and the female T9 (9th abdominal tergum). The paired 1st and the 2nd valvulae are interlocked via the olistheter system, which allows the three parts to slide longitudinally relative to each other, and form the terebra. The various ovipositor movements are actuated by a set of nine paired muscles, three of which (i.e. 1st valvifer-genital membrane muscle, ventral 2nd valvifer-venom gland reservoir muscle, T9-genital membrane muscle) are described here for the first time in chalcidoids. The anterior and posterior 2nd valvifer-2nd valvula muscles are adapted in function. (1) In the active probing position, they enable the wasps to pull the base of each of the longitudinally split and asymmetrically overlapping halves of the 2nd valvula that are fused at the apex dorsally, thus enabling lateral bending of the terebra. Concurrently, the 1st valvulae can be pro- and retracted regardless of this bending. (2) These muscles can also rotate the 2nd valvula and therefore the whole terebra at the basal articulation, allowing bending in various directions. The position of the terebra is anchored at the puncture site in hard substrates (in which drilling is extremely energy- and time-consuming). A freely steerable terebra increases the chance of contacting a potential host within a concealed cavity. The evolution of the ability actively to steer the terebra can be considered a key innovation that has putatively contributed to the acquisition of new hosts to a parasitoid's host range. Such shifts in host exploitation, each followed by rapid radiations, have probably aided the evolutionary success of Chalcidoidea (with more than 500,000 species estimated).
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Affiliation(s)
- Benjamin Eggs
- Evolutionary Biology of Invertebrates, Institute of Evolution and Ecology, University of Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany.
| | - Stefan Fischer
- Evolutionary Biology of Invertebrates, Institute of Evolution and Ecology, University of Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany
- Tübingen Structural Microscopy Core Facility (TSM), University of Tübingen, Schnarrenbergstraße 94-96, 72076, Tübingen, Germany
| | - Michael Csader
- Evolutionary Biology of Invertebrates, Institute of Evolution and Ecology, University of Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany
- State Museum of Natural History Karlsruhe, Erbprinzenstraße 13, 76133, Karlsruhe, Germany
| | - István Mikó
- Department of Biological Sciences, University of New Hampshire Collection of Insects and Other Arthropods, University of New Hampshire, Spaulding Hall, Durham, NH, 03824, USA
| | - Alexander Rack
- ESRF - The European Synchrotron, Structure of Materials Group - ID19, CS 40220, 38043, Grenoble Cedex 9, France
| | - Oliver Betz
- Evolutionary Biology of Invertebrates, Institute of Evolution and Ecology, University of Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany
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Gibson GAP, Fusu L. Leptoomidae, a new family of Eocene fossil Chalcidoidea (Hymenoptera), and family classification of Eocene fossil genera originally described in Neanastatinae (Eupelmidae). Zootaxa 2023; 5318:195-216. [PMID: 37518390 DOI: 10.11646/zootaxa.5318.2.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Indexed: 08/01/2023]
Abstract
Leptoomidae Gibson fam. nov. (Chalcidoidea) is described for the Eocene Baltic amber fossil genera Leptoomus Gibson, type genus, reassigned from Tanaostigmatidae, and Neanaperiallus Gibson, reassigned from Neanastatinae (Chalcidoidea: Eupelmidae) sensu Gibson (2009). One new species of Neanaperiallus, N. defunctus Fusu sp. nov., is described. The new family is differentiated from other families of Chalcidoidea that are partly characterized by a greatly enlarged acropleuron. In species of Leptoomidae the prepectus is anteriorly rounded to angulate and extends to or slightly over the posterolateral margin of the pronotum, with the dorsal prepectal margin intersecting the base of the tegula distinctly anterior to and forming an almost right-angle with the posterior margin of prepectus, and the posterior margin truncate along the anterior margin of the acropleuron. This prepectal structure is similar to that in Tanaostigmatidae and Cynipencyrtidae, except the prepectus is elongated anteriorly exterior to the pronotum in Tanaostigmatidae and interior to the lateral surface of the pronotum in Cynipencyrtidae. A difference in prepectal structure also indicates that an anteriorly elongated mesoscutal process internal to the pronotum in Encyrtidae is convergent to that of Cynipencyrtidae, and similarity in shape of the prepectus among Encyrtidae, Eopelma Gibson and Neanastatus Girault might be functionally correlated with an anterior elongation of the mesoscutal process. New or corrected morphological data are provided for the two included genera. Of other Eocene fossil genera originally classified in Neanastatinae, Brevivulva Gibson and Propelma Trjapitzin, are assigned to Neanastatidae sensu Burks et al. (2022) based on similar mesoscutellar structures. Possible relationships of Aspidopleura Gibson, a taxon with a puzzling combination of features, are discussed. Because Aspidopleura cannot be placed with confidence in any extinct or extant higher taxon it is treated as incertae sedis at family level within Chalcidoidea.
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Affiliation(s)
- Gary A P Gibson
- Honorary Research Associate; Agriculture and Agri-Food Canada; Canadian National Collection of Insects; Arachnids and Nematodes; K. W. Neatby Bldg.; 960 Carling Avenue; Ottawa; Ontario; CANADA; K1A 0C6.
| | - Lucian Fusu
- Al. I. Cuza University; Faculty of Biology; Bd. Carol I; Nr 11; 700506 Iasi; ROMANIA.
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11
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Huang Y, Yang Y, Qi L, Hu H, Rasplus JY, Wang X. Novel Gene Rearrangement Pattern in Pachycrepoideus vindemmiae Mitochondrial Genome: New Gene Order in Pteromalidae (Hymenoptera: Chalcidoidea). Animals (Basel) 2023; 13:1985. [PMID: 37370495 DOI: 10.3390/ani13121985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
The mitochondrial genomes of Muscidifurax similadanacus, M. sinesensilla, Nasonia vitripennis, and Pachycrepoideus vindemmiae were sequenced to better understand the structural evolution of Pteromalidae mitogenomes. These newly sequenced mitogenomes all contained 37 genes. Nucleotide composition was AT-biased and the majority of the protein-coding genes exhibited a negative AT skew. All 13 protein-coding genes (PCGs) initiated with the standard start codon of ATN, excepted for nad1 of N. vitripennis, which started with TTG, and terminated with a typical stop codon TAA/TAG or an incomplete stop codon T. All transfer RNA (tRNA) genes were predicted to fold into the typical clover-leaf secondary structures, except for trnS1, which lacks the DHU arm in all species. In P. vindemmiae, trnR and trnQ lack the DHU arm and TΨC arm, respectively. Although most genes evolved under a strong purifying selection, the Ka/Ks value of the atp8 gene of P. vindemmiae was greater than 1, indicating putative positive selection. A novel transposition of trnR in P. vindemmiae was revealed, which was the first of this kind to be reported in Pteromalidae. Two kinds of datasets (PCG12 and AA) and two inference methods (maximum likelihood and Bayesian inference) were used to reconstruct a phylogenetic hypothesis for the newly sequenced mitogenomes of Pteromalidae and those deposited in GenBank. The topologies obtained recovered the monophyly of the three subfamilies included. Pachyneurinae and Pteromalinae were recovered as sister families, and both appeared sister to Sycophaginae. The pairwise breakpoint distances of mitogenome rearrangements were estimated to infer phylogeny among pteromalid species. The topology obtained was not totally congruent with those reconstructed using the ML and BI methods.
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Affiliation(s)
- Yixin Huang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China
| | - Yuanhan Yang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
| | - Liqing Qi
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
| | - Haoyuan Hu
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
| | - Jean-Yves Rasplus
- Centre de Biologie pour la Gestion des Populations (CBGP), INRAE, CIRAD, IRD, Montpellier SupAgro, Université de Montpellier, 34398 Montpellier, France
| | - Xu Wang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
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12
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Polaszek A, Vilhemsen L. Biodiversity of hymenopteran parasitoids. CURRENT OPINION IN INSECT SCIENCE 2023; 56:101026. [PMID: 36966863 DOI: 10.1016/j.cois.2023.101026] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/18/2023] [Accepted: 03/20/2023] [Indexed: 05/03/2023]
Abstract
Parasitoid wasps are the most successful group of insect parasitoids, comprising more than half the known diversity of Hymenoptera and probably most of the unknown diversity. This lifestyle has enabled them to be used as pest control agents conferring substantial economic benefits to global agriculture. Major lineages of parasitoid wasps include Ichneumonoidea, Ceraphronoidea, Proctotrupomorpha, and a number of aculeate families. The parasitoid lifestyle arose only once among basal Hymenoptera, in the common ancestor of the Orussidae and Apocrita some 200+ Ma ago. The ancestral parasitoid wasp was probably an idiobiont on wood-living beetle larvae. From this comparatively simple biology, Hymenoptera radiated into an incredible diversity of hosts and parasitoid lifestyles, including hyperparasitoidism, kleptoparasitoidism, egg parasitoidism, and polyembryony, in several instances co-opting viruses to subdue their hosts. Many lineages evolved beyond the parasitoid niche, becoming secondarily herbivorous or predatory nest provisioners and eventually giving rise to most instances of insect societies.
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Affiliation(s)
- Andrew Polaszek
- Insects Division, Natural History Museum, London SW7 5BD, UK.
| | - Lars Vilhemsen
- Natural History Museum of Denmark, SCIENCE, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark
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13
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Extremely small wasps independently lost the nuclei in the brain neurons of at least two lineages. Sci Rep 2023; 13:4320. [PMID: 36922650 PMCID: PMC10017799 DOI: 10.1038/s41598-023-31529-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
Anucleate animal cells are a peculiar evolutionary phenomenon and a useful model for studying cellular mechanisms. Anucleate neurons were recently found in one genus of miniature parasitic wasps of the family Trichogrammatidae, but it remained unclear how widespread this phenomenon is among other insects or even among different tissues of the same insect species. We studied the anatomy of miniature representatives of another parasitic wasp family (Hymenoptera: Mymaridae) using array tomography and found two more species with nearly anucleate brains at the adult stage. Thus, the lysis of the cell bodies and nuclei of neurons appears to be a more widespread means of saving space during extreme miniaturization, which independently evolved at least twice during miniaturization in different groups of insects. These results are important for understanding the evolution of the brain during miniaturization and open new areas of studying the functioning of anucleate neurons.
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14
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A Compositional Heterogeneity Analysis of Mitochondrial Phylogenomics in Chalcidoidea Involving Two Newly Sequenced Mitogenomes of Eupelminae (Hymenoptera: Chalcidoidea). Genes (Basel) 2022; 13:genes13122340. [PMID: 36553606 PMCID: PMC9778353 DOI: 10.3390/genes13122340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/07/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
As next-generation sequencing technology becomes more mature and the cost of sequencing continues to fall, researchers are increasingly using mitochondrial genomes to explore phylogenetic relationships among different groups. In this study, we sequenced and analyzed the complete mitochondrial genomes of Eupelmus anpingensis and Merostenus sp. We predicted the secondary-structure tRNA genes of these two species and found that 21 of the 22 tRNA genes in Merostenus sp. exhibited typical clover-leaf structures, with trnS1 being the lone exception. In E. anpingensis, we found that, in addition to trnS1, the secondary structure of trnE was also incomplete, with only DHU arms and anticodon loop remaining. In addition, we found that compositional heterogeneity and variable rates of evolution are prevalent in Chalcidoidea. Under the homogeneity model, a Eupelmidae + Encyrtidae sister group relationship was proposed. Different datasets based on the heterogeneity model produced different tree topologies, but all tree topologies contained Chalcididae and Trichogrammatidae in the basal position of the tree. This is the first study to consider the phylogenetic relationships of Chalcidoidea by comparing a heterogeneity model with a homogeneity model.
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15
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Simutnik SA, Perkovsky EE, Vasilenko DV. Balticalcarus archibaldi Simutnik Gen. et sp. n. ( Chalcidoidea, Encyrtidae) with the Unusually Small Mesotibial Spur from Baltic Amber. LIFE (BASEL, SWITZERLAND) 2022; 12:life12122028. [PMID: 36556391 PMCID: PMC9783352 DOI: 10.3390/life12122028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Balticalcarus archibaldi Simutnik, gen. et sp. n., is described and illustrated based on a female specimen from late Eocene Baltic amber. The new genus is characterized by the absence of a filum spinosum, a "boat"-shaped hypopygium enclosing the ovipositor, reaching far past the apex of the syntergum, the presence of a line of long setae along the entire costal cell of the hind wing, and a transverse line of thickened setae alongside the hyaline spur vein. Moreover, like most previously described Eocene Encyrtidae, the new taxon differs from the majority of the extant ones by a number of morphological features. The new fossil differs from most extant and all known fossil Encyrtidae by its unusually small, thin, smooth (without microsetae) mesotibial spur.
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Affiliation(s)
- Serguei A. Simutnik
- I.I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, 01030 Kiev, Ukraine
- Correspondence: (S.A.S.); (E.E.P.)
| | - Evgeny E. Perkovsky
- I.I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, 01030 Kiev, Ukraine
- Correspondence: (S.A.S.); (E.E.P.)
| | - Dmitry V. Vasilenko
- A.A. Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow 117647, Russia
- Paleontological Laboratory, Cherepovets State University, Cherepovets 162600, Russia
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16
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Xing ZP, Liang X, Wang X, Hu HY, Huang YX. Novel gene rearrangement pattern in mitochondrial genome of Ooencyrtusplautus Huang & Noyes, 1994: new gene order in Encyrtidae (Hymenoptera, Chalcidoidea). Zookeys 2022; 1124:1-21. [PMID: 36762364 PMCID: PMC9836654 DOI: 10.3897/zookeys.1124.83811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 09/14/2022] [Indexed: 11/12/2022] Open
Abstract
Studies of mitochondrial genomes have a wide range of applications in phylogeny, population genetics, and evolutionary biology. In this study, we sequenced and analyzed the mitochondrial genome of Ooencyrtusplautus Huang & Noyes, 1994 (Hymenoptera, Encyrtidae). The nearly complete mitogenome of O.plautus was 15,730 bp in size, including 13 PCGs (protein-coding genes), 22 tRNAs, 2 rRNAs, and a nearly complete control region. The nucleotide composition was significantly biased toward adenine and thymine, with an A + T content of 84.6%. We used the reference sequence of Chouioiacunea and calculated the Ka/Ks ratio for each set of PCGs. The highest value of the Ka/Ks ratio within 13 PCGs was found in nad2 with 1.1, suggesting that they were subjected to positive selection. This phenomenon was first discovered in Encyrtidae. Compared with other encyrtid mitogenomes, a translocation of trnW was found in O.plautus, which was the first of its kind to be reported in Encyrtidae. Comparing with ancestral arrangement pattern, wasps reflect extensive gene rearrangements. Although these insects have a high frequency of gene rearrangement, species from the same family and genus tend to have similar gene sequences. As the number of sequenced mitochondrial genomes in Chalcidoidea increases, we summarize some of the rules of gene rearrangement in Chalcidoidea, that is four gene clusters with frequent gene rearrangements. Ten mitogenomes were included to reconstruct the phylogenetic trees of Encyrtidae based on both 13 PCGs (nucleotides of protein coding genes) and AA matrix (amino acids of protein coding genes) using the maximum likelihood and Bayesian inference methods. The phylogenetic tree reconstructed by Bayesian inference based on AA data set showed that Aenasiusarizonensis and Metaphycuseriococci formed a clade representing Tetracneminae. The remaining six species formed a monophyletic clade representing Encyrtinae. In Encyrtinae, Encyrtus forms a monophyletic clade as a sister group to the clade formed by O.plautus and Diaphorencyrtusaligarhensis. Encyrtussasakii and Encyrtusrhodooccisiae were most closely related species in this monophyletic clade. In addition, gene rearrangements can provide a valuable information for molecular phylogenetic reconstruction. These results enhance our understanding of phylogenetic relationships among Encyrtidae.
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Affiliation(s)
- Zhi-Ping Xing
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu, Anhui 241000, China,School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xin Liang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu, Anhui 241000, China,School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xu Wang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241000, China,Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, China
| | - Hao-Yuan Hu
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu, Anhui 241000, China,School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Yi-Xin Huang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu, Anhui 241000, China,School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241000, China,Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, China
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17
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Ma Y, Guo Z, Wang L, Wang B, Huang T, Tang B, Zhang G, Zhou Q. The genome of the rice planthopper egg parasitoid wasps Anagrus nilaparvatae casts light on the chemo- and mechanosensation in parasitism. BMC Genomics 2022; 23:541. [PMID: 35902811 PMCID: PMC9331105 DOI: 10.1186/s12864-022-08656-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/26/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Mymaridae is an ancient insect group and is a basal lineage of the superfamily Chalcidoidea. Species of Mymaridae have great potential for biological control. Anagrus nilaparvatae, a representative species of Mymaridae, is ideal for controlling rice planthopper due to its high rate of parasitism and ability to find hosts efficiently in paddy ridges and fields. RESULTS Using both PacBio single-molecule real-time and Illumina sequencing, we sequenced and assembled the whole genome of A. nilaparvatae, a first for the family Mymaridae. The assembly consists of 394 scaffolds, totaling 488.8 Mb. The assembly is of high continuity and completeness, indicated by the N50 value of 25.4 Mb and 98.2% mapping rate of Benchmarking Universal Single-Copy Orthologs. In total, 16,894 protein-coding genes in the genome were annotated. A phylogenomic tree constructed for A. nilaparvatae and other 12 species of Hymenoptera confirmed that the family Mymaridae is sister to all remaining chalcidoids. The divergence time between A. nilaparvatae and the other seven Chalcidoidea species was dated at ~ 126.9 Mya. Chemoreceptor and mechanoreceptor genes are important in explaining parasitic behavior. We identified 17 odorant binding proteins, 11 chemosensory proteins, four Niemann-Pick type C2 proteins, 88 olfactory receptors, 12 gustatory receptors, 22 ionotropic receptors and 13 sensory neuron membrane proteins in the genome of A. nilaparvatae, which are associated with the chemosensory functions. Strikingly, there is only one pickpocket receptors and nine transient receptor potential genes in the genome that have a mechanosensory function. CONCLUSIONS We obtained a high-quality genome assembly for A. nilaparvatae using PacBio single-molecule real-time sequencing, which provides phylogenomic insights for its evolutionary history. The small numbers of chemo- and mechanosensory genes in A. nilaparvatae indicate the species-specific host detection and oviposition behavior of A. nilaparvatae might be regulated by relatively simple molecular pathways.
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Affiliation(s)
- Ying Ma
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.,School of Agriculture, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zixiao Guo
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Liyang Wang
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Bingyang Wang
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Tingfa Huang
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Bingjie Tang
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Guren Zhang
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Qiang Zhou
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.
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18
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Zhou Y, Wang Y, Xiong X, Appel AG, Zhang C, Wang X. Profiles of telomeric repeats in Insecta reveal diverse forms of telomeric motifs in Hymenopterans. Life Sci Alliance 2022; 5:5/7/e202101163. [PMID: 35365574 PMCID: PMC8977481 DOI: 10.26508/lsa.202101163] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 12/23/2022] Open
Abstract
Telomeres consist of highly conserved simple tandem telomeric repeat motif (TRM): (TTAGG)n in arthropods, (TTAGGG)n in vertebrates, and (TTTAGGG)n in most plants. TRM can be detected from chromosome-level assembly, which typically requires long-read sequencing data. To take advantage of short-read data, we developed an ultra-fast Telomeric Repeats Identification Pipeline and evaluated its performance on 91 species. With proven accuracy, we applied Telomeric Repeats Identification Pipeline in 129 insect species, using 7 Tbp of short-read sequences. We confirmed (TTAGG)n as the TRM in 19 orders, suggesting it is the ancestral form in insects. Systematic profiling in Hymenopterans revealed a diverse range of TRMs, including the canonical 5-bp TTAGG (bees, ants, and basal sawflies), three independent losses of tandem repeat form TRM (Ichneumonoids, hunting wasps, and gall-forming wasps), and most interestingly, a common 8-bp (TTATTGGG)n in Chalcid wasps with two 9-bp variants in the miniature wasp (TTACTTGGG) and fig wasps (TTATTGGGG). Our results identified extraordinary evolutionary fluidity of Hymenopteran TRMs, and rapid evolution of TRM and repeat abundance at all evolutionary scales, providing novel insights into telomere evolution.
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Affiliation(s)
- Yihang Zhou
- Fundamental Research Center, Shanghai YangZhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), School of Life Sciences and Technology, Tongji University, Shanghai, China.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA.,Auburn University Center for Advanced Science, Innovation, and Commerce, Alabama Agricultural Experiment Station, Auburn, AL, USA
| | - Yi Wang
- Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Xiao Xiong
- Fundamental Research Center, Shanghai YangZhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), School of Life Sciences and Technology, Tongji University, Shanghai, China.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA.,Auburn University Center for Advanced Science, Innovation, and Commerce, Alabama Agricultural Experiment Station, Auburn, AL, USA
| | - Arthur G Appel
- Auburn University Center for Advanced Science, Innovation, and Commerce, Alabama Agricultural Experiment Station, Auburn, AL, USA.,Department of Entomology and Plant Pathology, Auburn University, AL, USA
| | - Chao Zhang
- Fundamental Research Center, Shanghai YangZhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Xu Wang
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA.,Auburn University Center for Advanced Science, Innovation, and Commerce, Alabama Agricultural Experiment Station, Auburn, AL, USA.,Department of Entomology and Plant Pathology, Auburn University, AL, USA.,HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
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László Z, Kelemen TI, Japoshvili G. Pteromalidae of Lagodekhi Protected Areas with the description of a new Psilocera species from Sakartvelo (Georgia). ACTA ZOOL ACAD SCI H 2022. [DOI: 10.17109/azh.68.1.53.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We present an annotated check-list of Pteromalidae (Hymenoptera: Chalcidoidea) from Sakartvelo (the Republic of Georgia), updating the available information of these parasitoids. We identified 22 species belonging to 17 genera from 9 subfamilies – Asaphinae, Cerocephalinae, Cleonyminae, Miscogastrinae, Pteromalinae and Spalangiinae. One species, Psilocera kartveli László et Kelemen sp. n., is described as a new for science, and the remaining 21 species are new records for the fauna of Georgia, from which 10 species are new for the Caucasus. All the 17 genera are recorded for the first time for the Georgian fauna. For each species, their biology and distribution are presented.
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20
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van de Kamp T, Mikó I, Staniczek AH, Eggs B, Bajerlein D, Faragó T, Hagelstein L, Hamann E, Spiecker R, Baumbach T, Janšta P, Krogmann L. Evolution of flexible biting in hyperdiverse parasitoid wasps. Proc Biol Sci 2022; 289:20212086. [PMID: 35078362 PMCID: PMC8790333 DOI: 10.1098/rspb.2021.2086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
One key event in insect evolution was the development of mandibles with two joints, which allowed powerful biting but restricted their movement to a single degree of freedom. These mandibles define the Dicondylia, which constitute over 99% of all extant insect species. It was common doctrine that the dicondylic articulation of chewing mandibles remained unaltered for more than 400 million years. We report highly modified mandibles overcoming the restrictions of a single degree of freedom and hypothesize their major role in insect diversification. These mandibles are defining features of parasitoid chalcid wasps, one of the most species-rich lineages of insects. The shift from powerful chewing to precise cutting likely facilitated adaptations to parasitize hosts hidden in hard substrates, which pose challenges to the emerging wasps. We reveal a crucial step in insect evolution and highlight the importance of comprehensive studies even of putatively well-known systems.
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Affiliation(s)
- Thomas van de Kamp
- Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein‐Leopoldshafen, Germany,Laboratory for Applications of Synchrotron Radiation (LAS), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany
| | - István Mikó
- Department of Biological Sciences, University of New Hampshire, Durham, NH 03824, USA
| | - Arnold H. Staniczek
- Department of Entomology, State Museum of Natural History Stuttgart, 70191 Stuttgart, Germany
| | - Benjamin Eggs
- Evolutionary Biology of Invertebrates, Institute of Evolution and Ecology, University of Tübingen, 72076 Tübingen, Germany
| | - Daria Bajerlein
- Department of Animal Taxonomy and Ecology, Adam Mickiewicz University in Poznań, 61‐614 Poznań, Poland
| | - Tomáš Faragó
- Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein‐Leopoldshafen, Germany
| | - Lea Hagelstein
- Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein‐Leopoldshafen, Germany
| | - Elias Hamann
- Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein‐Leopoldshafen, Germany
| | - Rebecca Spiecker
- Laboratory for Applications of Synchrotron Radiation (LAS), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany
| | - Tilo Baumbach
- Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein‐Leopoldshafen, Germany,Laboratory for Applications of Synchrotron Radiation (LAS), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany
| | - Petr Janšta
- Department of Entomology, State Museum of Natural History Stuttgart, 70191 Stuttgart, Germany,Department of Zoology, Faculty of Science, Charles University, 128 43 Prague 2, Czech Republic
| | - Lars Krogmann
- Department of Entomology, State Museum of Natural History Stuttgart, 70191 Stuttgart, Germany,Institute of Biology, Systematic Entomology (190n), University of Hohenheim, 70593 Stuttgart, Germany
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21
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Prazapati G, Yadav A, Ambili A, Sharma A, Raychoudhury R. Males of the parasitoid wasp, Nasonia vitripennis, can identify which fly hosts contain females. ROYAL SOCIETY OPEN SCIENCE 2022; 9:211865. [PMID: 35116169 PMCID: PMC8790343 DOI: 10.1098/rsos.211865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/04/2022] [Indexed: 05/03/2023]
Abstract
The reproductive success of a male is limited by the number of females it can mate with. Thus, males deploy elaborate strategies to maximize access to females. In Nasonia, which are parasitoids of cyclorrhaphous flies, such reproductive strategies are thought to be restricted to competition among males for access to females in the natal patch. This study investigates whether additional strategies are present, especially the capability to identify which fly hosts contain adult females inside. Behavioural assays revealed that only one out of the four species, N. vitripennis, can distinguish which hosts specifically have adult female wasps, indicating a species-specific reproductive strategy. Results of gas chromatography-mass spectrometry analyses and behavioural data suggest that female-signature cuticular hydrocarbons (CHCs) are used as chemical cues, possibly emanating from within the host puparium. Further assays indicated that N. vitripennis males can also detect differences in the intensities of female-signature CHCs, giving them the capability to seek out hosts with maximum number of females. This study uncovers a previously unknown reproductive strategy in one of the most widely studied parasitoid wasps.
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Affiliation(s)
- Garima Prazapati
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector- 81, Manauli P.O. 140306, India
| | - Ankit Yadav
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector- 81, Manauli P.O. 140306, India
| | - Anoop Ambili
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector- 81, Manauli P.O. 140306, India
| | - Abhilasha Sharma
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector- 81, Manauli P.O. 140306, India
| | - Rhitoban Raychoudhury
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector- 81, Manauli P.O. 140306, India
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22
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Haas M, Baur H, Schweizer T, Monje JC, Moser M, Bigalk S, Krogmann L. Tiny wasps, huge diversity - A review of German Pteromalidae with new generic and species records (Hymenoptera: Chalcidoidea). Biodivers Data J 2021; 9:e77092. [PMID: 34916873 PMCID: PMC8671368 DOI: 10.3897/bdj.9.e77092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/01/2021] [Indexed: 12/31/2022] Open
Abstract
Background Despite their ecological and economic importance, hymenopteran parasitoids are severely understudied. Even in countries with a long taxonomic history such as Germany, dating back to the 18th century and including prolific figures like Christian Gottfired Nees von Esenbeck and Otto Schmiedeknecht, those species-rich groups are seldom the subject of comprehensive research efforts, leaving their true diversity unknown. This is often due to their small size of a few millimetres on average, leading to difficulties in their identification and examination. The chalcidoid family Pteromalidae is no exception to this neglect. So far, 735 species have been reported from Germany. Estimating the diversity of this group is not possible, but it has to be assumed that many more species are still to be discovered in Germany. New information With this study, we improve the knowledge on pteromalid diversity and present new records of 17 genera and 41 species, previously unknown to occur in Germany. We also match and describe previously unknown sexes of two species, based on DNA barcode data. The results of this study were generated as part of the German Barcode of Life Project. The newly-recorded species are illustrated and notes on the biology and distribution are given. The ecological significance of Pteromalidae and potential value as indicators for nature conservation efforts are briefly discussed.
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Affiliation(s)
- Michael Haas
- Entomology, State Museum of Natural History, Stuttgart, Germany Entomology, State Museum of Natural History Stuttgart Germany.,Systematic Entomology (190n), University of Hohenheim, Stuttgart, Germany Systematic Entomology (190n), University of Hohenheim Stuttgart Germany
| | - Hannes Baur
- Department of Invertebrates, Natural History Museum Bern, Bern, Switzerland Department of Invertebrates, Natural History Museum Bern Bern Switzerland.,Institute of Ecology and Evolution, University of Bern, Bern, Switzerland Institute of Ecology and Evolution, University of Bern Bern Switzerland
| | - Tanja Schweizer
- Entomology, State Museum of Natural History, Stuttgart, Germany Entomology, State Museum of Natural History Stuttgart Germany
| | - Juan Carlos Monje
- Entomology, State Museum of Natural History, Stuttgart, Germany Entomology, State Museum of Natural History Stuttgart Germany
| | - Marina Moser
- Entomology, State Museum of Natural History, Stuttgart, Germany Entomology, State Museum of Natural History Stuttgart Germany.,Systematic Entomology (190n), University of Hohenheim, Stuttgart, Germany Systematic Entomology (190n), University of Hohenheim Stuttgart Germany
| | - Sonia Bigalk
- Entomology, State Museum of Natural History, Stuttgart, Germany Entomology, State Museum of Natural History Stuttgart Germany
| | - Lars Krogmann
- Entomology, State Museum of Natural History, Stuttgart, Germany Entomology, State Museum of Natural History Stuttgart Germany.,Systematic Entomology (190n), University of Hohenheim, Stuttgart, Germany Systematic Entomology (190n), University of Hohenheim Stuttgart Germany
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23
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Yang Y, Shan Y, Liu A, Li Y, Liu X, Cao J, He F, Ye H. Morphology and distribution of antennal sensilla in adults of Xylotrechus quadripes. Microsc Res Tech 2021; 85:1146-1159. [PMID: 34862817 DOI: 10.1002/jemt.23983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/19/2021] [Accepted: 10/31/2021] [Indexed: 11/06/2022]
Abstract
Xylotrechus quadripes (Chevrolat) is the serious woodborer pest of arabica coffee (Coffea arabica L.). To further elucidate the behavior mechanism of the insect based on chemical odorant and to advance effective trapping methods, the typology, distribution, and abundance of antennal sensilla were investigated meticulously in both sexes of X. quadripes by scanning electron microscopy. The filiform antennae of both sexes are composed of 11 segments, namely the scape, pedicel, and nine flagellomeres (f1-9). Ten types (14 subtypes) of sensilla were identified morphologically: sensilla chaetica (three subtypes, Ch.1-3), sensilla basiconica (three subtypes, Ba.1-3), Böhm bristles (Bb), sensilla dentiform (De), sensilla trichodea (Tr), sensilla auricillica (Au), sensilla campaniformia (Ca), grooved peg sensilla (Gp), cuticular pores (Cp), and a newly observed sensillum, named sensilla cone (Cone). The sensilla were mainly distributed in flagellomeres, and the types and amounts increased in frequency from scape to the ninth flagellomere. The numbers of sensilla were the highest on the antennal dorsal side, while the lowest on the ventral side. The types of sensilla were the most abundant on the lateral side, and two sensilla basiconica (Ba.1-2) were found exclusively. The average number of Tr, Ba, and Au on the antenna of the males was significantly greater than females, while the Gp and Cp on the antenna of the females were significantly greater than males. Ca was exclusively occurred on the male antennae but was absent in females. This study discusses the putative functions of the antennal sensilla in adults of X. quadripes based on their characteristics in related species' sensilla, and these results provide an important foundation to clarify the ecological adaption, olfactory recognition mechanism, and to develop the chemical ecology control of X. quadripes.
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Affiliation(s)
- Yang Yang
- Schools of Life Sciences, Yunnan University, Kunming, China
| | - Yunhui Shan
- Dehong Hero Coffee Company Limited, Dehong, China
| | - Anqi Liu
- Schools of Agriculture, Yunnan University, Kunming, China
| | - Yawen Li
- Schools of Life Sciences, Yunnan University, Kunming, China
| | - Xiaofei Liu
- Institute of International Rivers and Eco-security, Yunnan University, Kunming, China
| | - Jun Cao
- School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Feifei He
- Schools of Agriculture, Yunnan University, Kunming, China
| | - Hui Ye
- School of Ecology and Environmental Science, Yunnan University, Kunming, China
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24
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Zhao H, Chen Y, Wang Z, Chen H, Qin Y. Two Complete Mitogenomes of Chalcididae (Hymenoptera: Chalcidoidea): Genome Description and Phylogenetic Implications. INSECTS 2021; 12:insects12121049. [PMID: 34940137 PMCID: PMC8707279 DOI: 10.3390/insects12121049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/12/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary The Chalcididae are a moderate-sized family of the superfamily Chalcidoidea in Hymenoptera, comprising 1548 species in 87 genera worldwide. Some species are potential natural enemies of pests in agriculture and forestry. Currently, there are still some controversies about the monophyly of Chalcididae and the phylogenetic relationships between Chalcididae and other families in Chalcidoidea. Based on the fact that no mitogenomic phylogenetic analyses of all of the published mitogenomes of Chalcidoidea have been conducted and no complete mitogenome of Chalcididae species has been reported, two newly completed mitochondrial genomes of Chalcididae species (Brachymeria lasus and Haltichella nipponensis) were sequenced and analyzed. The results show that the two chalcidid mitogenomes have quite similar structures and features. In phylogenetic analyses based on 13 PCGs of mitogenomes, the basal position and monophyly of Chalcididae within Chalcidoidea were supported by all trees derived from maximum likelihood (ML) and Bayesian inference (BI) methods. Abstract The complete mitochondrial genomes of two species of Chalcididae were newly sequenced: Brachymeria lasus and Haltichella nipponensis. Both circular mitogenomes are 15,147 and 15,334 bp in total length, respectively, including 13 protein-coding genes (PCGs), two ribosomal RNA genes (rRNAs), and 22 transfer RNA genes (tRNAs) and an A+T-rich region. The nucleotide composition indicated a strong A/T bias. All PCGs of B. lasus and H. nipponensis began with the start codon ATD, except for B. lasus, which had an abnormal initiation codon TTG in ND1. Most PCGs of the two mitogenomes are terminated by a codon of TAR, and the remaining PCGs by the incomplete stop codon T or TA (ATP6, COX3, and ND4 in both species, with an extra CYTB in B. lasus). Except for trnS1 and trnF, all tRNAs can be folded into a typical clover structure. Both mitogenomes had similar control regions, and two repeat units of 135 bp were found in H. nipponensis. Phylogenetic analyses based on two datasets (PCG123 and PCG12) covering Chalcididae and nine families of Chalcidoidea were conducted using two methods (maximum likelihood and Bayesian inference); all the results support Mymaridae as the sister group of the remaining Chalcidoidea, with Chalcididae as the next successive group. Only analyses of PCG123 generated similar topologies of Mymaridae + (Chalcididae + (Agaonidae + remaining Chalcidoidea)) and provided one relative stable clade as Eulophidae + (Torymidae + (Aphelinidae + Trichogrammatidae)). Our mitogenomic phylogenetic results share one important similarity with earlier molecular phylogenetic efforts: strong support for the monophyly of many families, but a largely unresolved or unstable “backbone” of relationships among families.
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Affiliation(s)
- Huifeng Zhao
- Hebei Key Laboratory of Animal Diversity, College of Life Science, Langfang Normal University, Langfang 065000, China; (H.Z.); (Y.C.); (H.C.)
| | - Ye Chen
- Hebei Key Laboratory of Animal Diversity, College of Life Science, Langfang Normal University, Langfang 065000, China; (H.Z.); (Y.C.); (H.C.)
| | - Zitong Wang
- School of Forestry, Northeast Forestry University, Harbin 150040, China;
| | - Haifeng Chen
- Hebei Key Laboratory of Animal Diversity, College of Life Science, Langfang Normal University, Langfang 065000, China; (H.Z.); (Y.C.); (H.C.)
| | - Yaoguang Qin
- Hebei Key Laboratory of Animal Diversity, College of Life Science, Langfang Normal University, Langfang 065000, China; (H.Z.); (Y.C.); (H.C.)
- Correspondence:
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25
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Gil‐Tapetado D, Durán‐Montes P, García‐París M, López‐Estrada EK, Sánchez‐Vialas A, Jiménez‐Ruiz Y, Gómez JF, Nieves‐Aldrey JL. Host specialization is ancestral in
Torymus
(Hymenoptera, Chalcidoidea) cynipid gall parasitoids. ZOOL SCR 2021. [DOI: 10.1111/zsc.12515] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Diego Gil‐Tapetado
- Museo Nacional de Ciencias Naturales (CSIC) Madrid Spain
- Facultad de Ciencias Biológicas Departamento de Biodiversidad, Ecología y Evolución Universidad Complutense de Madrid Madrid Spain
| | - Patricia Durán‐Montes
- Facultad de Ciencias Biológicas Departamento de Biodiversidad, Ecología y Evolución Universidad Complutense de Madrid Madrid Spain
| | | | | | | | | | - Jose F. Gómez
- Facultad de Ciencias Biológicas Departamento de Biodiversidad, Ecología y Evolución Universidad Complutense de Madrid Madrid Spain
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26
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Braun C, Peters RS. Twelve new species of Dipara Walker, 1833 (Hymenoptera, Chalcidoidea, Pteromalidae, Diparinae) from Kenya, with a key to the Afrotropical species. Zookeys 2021; 1067:101-157. [PMID: 34759722 PMCID: PMC8571251 DOI: 10.3897/zookeys.1067.72395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/04/2021] [Indexed: 11/14/2022] Open
Abstract
Based on 261 female specimens of the genus Dipara Walker, 1833 from leaf litter samples of the Kakamega Forest in Kenya, we describe the following twelve new species: Diparaandreabalzerae sp. nov., Diparacorona sp. nov., Diparafastigata sp. nov., Diparakakamegensis sp. nov., Diparalux sp. nov., Diparanigroscutellata sp. nov., Diparanyani sp. nov., Diparareticulata sp. nov., Dipararodneymulleni sp. nov., Diparasapphirus sp. nov., Diparatenebra sp. nov., and Diparatigrina sp. nov. For Diparaalbomaculata (Hedqvist, 1963) and Diparanigrita Hedqvist, 1969, we give new distribution records. We examined the available type material of all described Dipara species from the Afrotropical mainland, i.e., Diparaalbomaculata (Hedqvist, 1963), Diparamachadoi (Hedqvist, 1971), Diparamaculata (Hedqvist, 1963), Diparanigrita Hedqvist, 1969, Diparapallida (Hedqvist, 1969), Diparapunctulata (Hedqvist, 1969), Diparasaetosa (Delucchi, 1962), Diparastraminea (Hedqvist, 1969), Diparastriata (Hedqvist, 1969), and Diparaturneri Hedqvist, 1969. We provide figures, descriptions, and diagnoses of the newly described species and figures and diagnoses of the ten known species as well as an identification key to all species of the Afrotropical mainland.
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Affiliation(s)
- Christoph Braun
- Leibniz Institute for the Analysis of Biodiversity Change, Zoological Research Museum Alexander Koenig, Adenauerallee 160, 53113 Bonn, GermanyZoological Research Museum Alexander KoenigBonnGermany
| | - Ralph S. Peters
- Leibniz Institute for the Analysis of Biodiversity Change, Zoological Research Museum Alexander Koenig, Adenauerallee 160, 53113 Bonn, GermanyZoological Research Museum Alexander KoenigBonnGermany
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27
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Pacheco da Silva VC, Aquino DA, Crochard D, Malausa T, Botton M, Palero F. Parasitoids (Hymenoptera) of Mealybug Pests (Hemiptera: Pseudococcidae) from Southern Brazil: Molecular and Morphological Characterization. NEOTROPICAL ENTOMOLOGY 2021; 50:759-766. [PMID: 33683557 DOI: 10.1007/s13744-020-00841-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
Parasitoids of three mealybug pests (Hemiptera: Pseudococcidae), Planococcus ficus (Signoret), Pseudococcus sociabilis Hambleton, and Pseudococcus viburni (Signoret) have been identified for the first time in Brazil. Mealybugs were collected in fruit-growing areas along southern Brazil during 2013-2016. An integrative approach, combining morphological and molecular methods, was used to identify the Brazilian parasitoids to the species level. Fifteen species were recorded, including 14 primary parasitoids belonging to Encyrtidae and Platygastridae and a single secondary parasitoid species belonging to Signiphoridae. The encyrtid parasitoids Acerophagus flavidulus (Brèthes), Anagyrus calyxtoi Noyes and Zaplatycerus sp., and the signiphorid secondary parasitoid Chartocerus axillaris De Santis are reported for the first time in Brazil.
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Affiliation(s)
| | - Daniel Alejandro Aquino
- Centro de Estudios Parasitológicos y de Vectores (CONICET - UNLP), La Plata, Buenos Aires, Argentina
- Curso Zoología Agrícola, Centro de Investigación en Sanidad Vegetal, Facultad de Ciencias Agrarias y Forestales, Univ Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Didier Crochard
- Institut Sophia Agrobiotech INRA, Sophia Antipolis, PACA, France
| | - Thibaut Malausa
- Institut Sophia Agrobiotech INRA, Sophia Antipolis, PACA, France
| | | | - Ferran Palero
- Institut Sophia Agrobiotech INRA, Sophia Antipolis, PACA, France
- Cavanilles Institute of Biodiversity and Evolutionary Biology, Univ of Valencia, Paterna, Spain
- Dept of Life Sciences, The Natural History Museum, London, UK
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28
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Cruaud A, Delvare G, Nidelet S, Sauné L, Ratnasingham S, Chartois M, Blaimer BB, Gates M, Brady SG, Faure S, van Noort S, Rossi JP, Rasplus JY. Ultra-Conserved Elements and morphology reciprocally illuminate conflicting phylogenetic hypotheses in Chalcididae (Hymenoptera, Chalcidoidea). Cladistics 2021; 37:1-35. [PMID: 34478176 DOI: 10.1111/cla.12416] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2020] [Indexed: 11/30/2022] Open
Abstract
Recent technical advances combined with novel computational approaches have promised the acceleration of our understanding of the tree of life. However, when it comes to hyperdiverse and poorly known groups of invertebrates, studies are still scarce. As published phylogenies will be rarely challenged by future taxonomists, careful attention must be paid to potential analytical bias. We present the first molecular phylogenetic hypothesis for the family Chalcididae, a group of parasitoid wasps, with a representative sampling (144 ingroups and seven outgroups) that covers all described subfamilies and tribes, and 82% of the known genera. Analyses of 538 Ultra-Conserved Elements (UCEs) with supermatrix (RAxML and IQTREE) and gene tree reconciliation approaches (ASTRAL, ASTRID) resulted in highly supported topologies in overall agreement with morphology but reveal conflicting topologies for some of the deepest nodes. To resolve these conflicts, we explored the phylogenetic tree space with clustering and gene genealogy interrogation methods, analyzed marker and taxon properties that could bias inferences and performed a thorough morphological analysis (130 characters encoded for 40 taxa representative of the diversity). This joint analysis reveals that UCEs enable attainment of resolution between ancestry and convergent/divergent evolution when morphology is not informative enough, but also shows that a systematic exploration of bias with different analytical methods and a careful analysis of morphological features is required to prevent publication of artifactual results. We highlight a GC content bias for maximum-likelihood approaches, an artifactual mid-point rooting of the ASTRAL tree and a deleterious effect of high percentage of missing data (>85% missing UCEs) on gene tree reconciliation methods. Based on the results we propose a new classification of the family into eight subfamilies and ten tribes that lay the foundation for future studies on the evolutionary history of Chalcididae.
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Affiliation(s)
- Astrid Cruaud
- CBGP, CIRAD, INRAe, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Gérard Delvare
- CBGP, CIRAD, INRAe, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France.,UMR CBGP, CIRAD, F-34398, Montpellier, France
| | - Sabine Nidelet
- CBGP, CIRAD, INRAe, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Laure Sauné
- CBGP, CIRAD, INRAe, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | | | - Marguerite Chartois
- CBGP, CIRAD, INRAe, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | | | - Michael Gates
- USDA, ARS, SEL, c/o Smithsonian Institution, National Museum of Natural History, Washington, DC, USA
| | - Seán G Brady
- Department of Entomology, Smithsonian Institution, National Museum of Natural History, Washington, DC, USA
| | - Sariana Faure
- Department of Zoology and Entomology, Rhodes University, Grahamstown, South Africa
| | - Simon van Noort
- Research and Exhibitions Department, South African Museum, Iziko Museums of South Africa, PO Box 61, Cape Town, 8000, South Africa.,Department of Biological Sciences, University of Cape Town, Private Bag, Rondebosch, 7701, Cape Town, South Africa
| | - Jean-Pierre Rossi
- CBGP, CIRAD, INRAe, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Jean-Yves Rasplus
- CBGP, CIRAD, INRAe, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
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29
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Borges RM. Interactions Between Figs and Gall-Inducing Fig Wasps: Adaptations, Constraints, and Unanswered Questions. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.685542] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The ancient interaction between figs (Ficus, Moraceae) and their pollinating fig wasps is an unusual example of a mutualism between plants and gall-inducing insects. This review intends to offer fresh perspectives into the relationship between figs and the diversity of gall-inducing sycophiles which inhabit their enclosed globular inflorescences that function as microcosms. Besides gall-inducing pollinators, fig inflorescences are also inhabited by other gall-inducing wasps. This review evaluates the state of current knowledge on gall-induction by fig wasps and exposes the many lacunae in this area. This review makes connections between fig and gall-inducing wasp traits, and suggests relatively unexplored research avenues. This manuscript calls for an integrated approach that incorporates such diverse fields as life-history theory, plant mate choice, wasp sexual selection and local mate competition, plant embryology as well as seed and fruit dispersal. It calls for collaboration between researchers such as plant developmental biologists, insect physiologists, chemical ecologists and sensory biologists to jointly solve the many valuable questions that can be addressed in community ecology, co-evolution and species interaction biology using the fig inflorescence microcosm, that is inhabited by gall-inducing mutualistic and parasitic wasps, as a model system.
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30
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Kasoju VT, Moen DS, Ford MP, Ngo TT, Santhanakrishnan A. Interspecific variation in bristle number on forewings of tiny insects does not influence clap-and-fling aerodynamics. J Exp Biol 2021; 224:272163. [PMID: 34286832 DOI: 10.1242/jeb.239798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 07/19/2021] [Indexed: 11/20/2022]
Abstract
Miniature insects must overcome significant viscous resistance in order to fly. They typically possess wings with long bristles on the fringes and use clap-and-fling mechanism to augment lift. These unique solutions to the extreme conditions of flight at tiny sizes (< 2 mm body length) suggest that natural selection has optimized wing design for better aerodynamic performance. However, species vary in wingspan, number of bristles (n), and bristle gap (G) to diameter (D) ratio (G/D). How this variation relates to body length (BL) and its effects on aerodynamics remain unknown. We measured forewing images of 38 species of thrips and 21 species of fairyflies. Our phylogenetic comparative analyses showed that n and wingspan scaled positively and similarly with body length across both groups, whereas G/D decreased with BL, with a sharper decline in thrips. We next measured aerodynamic forces and visualized flow on physical models of bristled wings performing clap-and-fling kinematics at chord-based Reynolds number of 10 using a dynamically scaled robotic platform. We examined the effects of dimensional (G, D, wingspan) and non-dimensional (n, G/D) geometric variables on dimensionless lift and drag. We found that: (a) increasing G reduced drag more than decreasing D; (b) changing n had minimal impact on lift generation; and (c) varying G/D minimally affected aerodynamic forces. These aerodynamic results suggest little pressure to functionally optimize n and G/D. Combined with the scaling relationships between wing variables and BL, much wing variation in tiny flying insects might be best explained by underlying shared growth factors.
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Affiliation(s)
- Vishwa T Kasoju
- School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078-5016, USA
| | - Daniel S Moen
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Mitchell P Ford
- School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078-5016, USA
| | - Truc T Ngo
- School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078-5016, USA
| | - Arvind Santhanakrishnan
- School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078-5016, USA
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31
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Moser M, Burks RA, Ulmer JM, Heraty JM, van de Kamp T, Krogmann L. Taxonomic description and phylogenetic placement of two new species of Spalangiopelta (Hymenoptera: Pteromalidae: Ceinae) from Eocene Baltic amber. PeerJ 2021; 9:e10939. [PMID: 34113480 PMCID: PMC8162234 DOI: 10.7717/peerj.10939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/21/2021] [Indexed: 11/22/2022] Open
Abstract
Spalangiopelta is a small genus of chalcid wasps that has received little attention despite the widespread distribution of its extant species. The fossil record of the genus is restricted to a single species from Miocene Dominican amber. We describe two new fossil species, Spalangiopelta darlingi sp. n. and Spalangiopelta semialba sp. n. from Baltic amber. The species can be placed within the extant genus Spalangiopelta based on the distinctly raised hind margin of the mesopleuron. 3D models reconstructed from µCT data were utilized to assist in the descriptions. Furthermore, we provide a key for the females of all currently known Spalangiopelta species. The phylogenetic placement of the fossils within the genus is analyzed using parsimony analysis based on morphological characters. Phylogenetic and functional relevance of two wing characters, admarginal setae and the hyaline break, are discussed. The newly described Baltic amber fossils significantly extend the minimum age of Spalangiopelta to the Upper Eocene.
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Affiliation(s)
- Marina Moser
- Department of Entomology, State Museum of Natural History Stuttgart, Stuttgart, Germany
- Institute of Biology, Systematic Entomology (190n), University of Hohenheim, Stuttgart, Germany
| | - Roger A. Burks
- Department of Entomology, University of California Riverside, Riverside, CA, USA
| | - Jonah M. Ulmer
- Department of Entomology, State Museum of Natural History Stuttgart, Stuttgart, Germany
- Institute of Biology, Systematic Entomology (190n), University of Hohenheim, Stuttgart, Germany
| | - John M. Heraty
- Department of Entomology, University of California Riverside, Riverside, CA, USA
| | - Thomas van de Kamp
- Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
- Laboratory for Applications of Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Lars Krogmann
- Department of Entomology, State Museum of Natural History Stuttgart, Stuttgart, Germany
- Institute of Biology, Systematic Entomology (190n), University of Hohenheim, Stuttgart, Germany
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Xiao J, Wei X, Zhou Y, Xin Z, Miao Y, Hou H, Li J, Zhao D, Liu J, Chen R, Niu L, Ma G, Zhen W, He S, Wang J, Wei X, Dou W, Sui Z, Zhang H, Xing S, Shi M, Huang D. Genomes of 12 fig wasps provide insights into the adaptation of pollinators to fig syconia. J Genet Genomics 2021; 48:225-236. [PMID: 34011484 DOI: 10.1016/j.jgg.2021.02.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/14/2021] [Accepted: 02/28/2021] [Indexed: 10/21/2022]
Abstract
Figs and fig pollinators are one of the few classic textbook examples of obligate pollination mutualism. The specific dependence of fig pollinators on the relatively safe living environment with sufficient food sources in the enclosed fig syconia implies that they are vulnerable to habitat changes. However, there is still no extensive genomic evidence to reveal the evolutionary footprint of this long-term mutually beneficial symbiosis in fig pollinators. In fig syconia, there are also non-pollinator species. The non-pollinator species differ in their evolutionary and life histories from pollinators. We conducted comparative analyses on 11 newly sequenced fig wasp genomes and one previously published genome. The pollinators colonized the figs approximately 66.9 million years ago, consistent with the origin of host figs. Compared with non-pollinators, many more genes in pollinators were subject to relaxed selection. Seven genes were absent in pollinators in response to environmental stress and immune activation. Pollinators had more streamlined gene repertoires in the innate immune system, chemosensory toolbox, and detoxification system. Our results provide genomic evidence for the differentiation between pollinators and nonpollinators. The data suggest that owing to the long-term adaptation to the fig, some genes related to functions no longer required are absent in pollinators.
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Affiliation(s)
- Jinhua Xiao
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Xianqin Wei
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yi Zhou
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Zhaozhe Xin
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yunheng Miao
- Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Hongxia Hou
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jiaxing Li
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Dan Zhao
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jing Liu
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Rui Chen
- Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Liming Niu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Guangchang Ma
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Wenquan Zhen
- Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, College of Marine Sciences, Beibu Gulf University, Qinzhou 535011, China
| | - Shunmin He
- Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Jianxia Wang
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xunfan Wei
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Weihao Dou
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Zhuoxiao Sui
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | | | - Shilai Xing
- Berry Genomics Corporation, Beijing 102206, China
| | - Miao Shi
- Berry Genomics Corporation, Beijing 102206, China
| | - Dawei Huang
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China; Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
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Zhou QS, Xiong M, Luo A, Zhang YZ, Zhu CD. The complete mitochondrial genome of Metaphycus eriococci (Timberlake) (Hymenoptera: Encyrtidae). Mitochondrial DNA B Resour 2021; 6:550-552. [PMID: 33628924 PMCID: PMC7889208 DOI: 10.1080/23802359.2021.1872450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 01/02/2021] [Indexed: 12/03/2022] Open
Abstract
The complete mitochondrial genome of the Metaphycus eriococci (Timberlake, 1916) (Hymenoptera: Encyrtidae) was obtained via next-generation sequencing. This mitochondrial genome is 15,749 bp in length with 37 classical eukaryotic mitochondrial genes and an A + T-rich region. All the 13 PCGs begin with typical ATN codons. Among them, 12 PCG genes terminate with TAA, only one with TAG. All of the 22 tRNA genes, ranging from 58 to 72 bp with typical cloverleaf structure except for trnS1 and trnE, whose dihydrouridine arm forms a simple loop. A dramatic gene rearrangement with a large inversion of six protein-coding genes (nad3-cox3-atp6-atp8-cox2-cox1) also found in M. eriococci. Phylogenetic analysis highly supported the monophyly of Pteromalidae, Eupelmidae, and Encyrtidae are sister groups. Within Encyrtidae, Metaphycus eriococci and Aenasius arizonensis are close to each other.
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Affiliation(s)
- Qing-Song Zhou
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Mei Xiong
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences (UCAS), Beijing, China
| | - Arong Luo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yan-Zhou Zhang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Chao-Dong Zhu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences (UCAS), Beijing, China
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Zhao D, Xin Z, Hou H, Zhou Y, Wang J, Xiao J, Huang D. Inferring the Phylogenetic Positions of Two Fig Wasp Subfamilies of Epichrysomallinae and Sycophaginae Using Transcriptomes and Mitochondrial Data. Life (Basel) 2021; 11:40. [PMID: 33440891 PMCID: PMC7826959 DOI: 10.3390/life11010040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 11/17/2022] Open
Abstract
Fig wasps are a group of insects (Hymenoptera: Chalcidoidea) that live in the compact syconia of fig trees (Moraceae: Ficus). Accurate classification and phylogenetic results are very important for studies of fig wasps, but the taxonomic statuses of some fig wasps, especially the non-pollinating subfamilies are difficult to determine, such as Epichrysomallinae and Sycophaginae. To resolve the taxonomic statuses of Epichrysomallinae and Sycophaginae, we obtained transcriptomes and mitochondrial genome (mitogenome) data for four species of fig wasps. These newly added data were combined with the data of 13 wasps (data on 11 fig wasp species were from our laboratory and two wasp species were download from NCBI). Based on the transcriptome and genome data, we obtained 145 single-copy orthologous (SCO) genes in 17 wasp species, and based on mitogenome data, we obtained 13 mitochondrial protein-coding genes (PCGs) for each of the 17 wasp species. Ultimately, we used 145 SCO genes, 13 mitochondrial PCGs and combined SCO genes and mitochondrial genes data to reconstruct the phylogenies of fig wasps using both maximum likelihood (ML) and Bayesian inference (BI) analyses. Our results suggest that both Epichrysomallinae and Sycophaginae are more closely related to Agaonidae with a high statistical support.
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Affiliation(s)
| | | | | | | | | | - Jinhua Xiao
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China; (D.Z.); (Z.X.); (H.H.); (Y.Z.); (J.W.)
| | - Dawei Huang
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China; (D.Z.); (Z.X.); (H.H.); (Y.Z.); (J.W.)
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35
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Czekanski‐Moir JE, Rundell RJ. Endless forms most stupid, icky, and small: The preponderance of noncharismatic invertebrates as integral to a biologically sound view of life. Ecol Evol 2020; 10:12638-12649. [PMID: 33304481 PMCID: PMC7713927 DOI: 10.1002/ece3.6892] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 09/15/2020] [Accepted: 09/22/2020] [Indexed: 01/02/2023] Open
Abstract
Big, beautiful organisms are useful for biological education, increasing evolution literacy, and biodiversity conservation. But if educators gloss over the ubiquity of streamlined and miniaturized organisms, they unwittingly leave students and the public vulnerable to the idea that the primary evolutionary plot of every metazoan lineage is "progressive" and "favors" complexity. We show that simple, small, and intriguingly repulsive invertebrate animals provide a counterpoint to misconceptions about evolution. Our examples can be immediately deployed in biology courses and outreach. This context emphasizes that chordates are not the pinnacle of evolution. Rather, in the evolution of animals, miniaturization, trait loss, and lack of perfection are at least as frequent as their opposites. Teaching about invertebrate animals in a "tree thinking" context uproots evolution misconceptions (for students and the public alike), provides a mental scaffold for understanding all animals, and helps to cultivate future ambassadors and experts on these little-known, weird, and fascinating taxa.
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Affiliation(s)
- Jesse E. Czekanski‐Moir
- Department of Environmental and Forest BiologyState University of New York College of Environmental Science and ForestrySyracuseNYUSA
| | - Rebecca J. Rundell
- Department of Environmental and Forest BiologyState University of New York College of Environmental Science and ForestrySyracuseNYUSA
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Blaimer BB, Gotzek D, Brady SG, Buffington ML. Comprehensive phylogenomic analyses re-write the evolution of parasitism within cynipoid wasps. BMC Evol Biol 2020; 20:155. [PMID: 33228574 PMCID: PMC7686688 DOI: 10.1186/s12862-020-01716-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/31/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Parasitoidism, a specialized life strategy in which a parasite eventually kills its host, is frequently found within the insect order Hymenoptera (wasps, ants and bees). A parasitoid lifestyle is one of two dominant life strategies within the hymenopteran superfamily Cynipoidea, with the other being an unusual plant-feeding behavior known as galling. Less commonly, cynipoid wasps exhibit inquilinism, a strategy where some species have adapted to usurp other species' galls instead of inducing their own. Using a phylogenomic data set of ultraconserved elements from nearly all lineages of Cynipoidea, we here generate a robust phylogenetic framework and timescale to understand cynipoid systematics and the evolution of these life histories. RESULTS Our reconstructed evolutionary history for Cynipoidea differs considerably from previous hypotheses. Rooting our analyses with non-cynipoid outgroups, the Paraulacini, a group of inquilines, emerged as sister-group to the rest of Cynipoidea, rendering the gall wasp family Cynipidae paraphyletic. The families Ibaliidae and Liopteridae, long considered archaic and early-branching parasitoid lineages, were found nested well within the Cynipoidea as sister-group to the parasitoid Figitidae. Cynipoidea originated in the early Jurassic around 190 Ma. Either inquilinism or parasitoidism is suggested as the ancestral and dominant strategy throughout the early evolution of cynipoids, depending on whether a simple (three states: parasitoidism, inquilinism and galling) or more complex (seven states: parasitoidism, inquilinism and galling split by host use) model is employed. CONCLUSIONS Our study has significant impact on understanding cynipoid evolution and highlights the importance of adequate outgroup sampling. We discuss the evolutionary timescale of the superfamily in relation to their insect hosts and host plants, and outline how phytophagous galling behavior may have evolved from entomophagous, parasitoid cynipoids. Our study has established the framework for further physiological and comparative genomic work between gall-making, inquiline and parasitoid lineages, which could also have significant implications for the evolution of diverse life histories in other Hymenoptera.
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Affiliation(s)
- Bonnie B Blaimer
- Center for Integrative Biodiversity Discovery, Museum für Naturkunde, Berlin, Germany.
- National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.
- North Carolina State University, Raleigh, NC, USA.
| | - Dietrich Gotzek
- National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Seán G Brady
- National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Matthew L Buffington
- Systematic Entomology Laboratory, ARS-USDA, C/O NMNH, Smithsonian Institution, Washington, DC, USA.
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37
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Gadallah NS, Soliman AM, Dhafer HMA. First record of the subfamily Epitraninae from Saudi Arabia (Hymenoptera, Chalcidoidea, Chalcididae), with the description of three new species. Zookeys 2020; 979:35-86. [PMID: 33192131 PMCID: PMC7609529 DOI: 10.3897/zookeys.979.52059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 09/23/2020] [Indexed: 11/12/2022] Open
Abstract
The monotypic subfamily Epitraninae Burks, 1936 (Hymenoptera: Chalcidoidea, Chalcididae) is reported for the first time in Saudi Arabia. Seven Epitranus species are recorded in the Southwestern and Central regions of the Kingdom of Saudi Arabia, of which three species are new: E. delvarei Soliman & Gadallah, sp. nov. (female & male), E. similis Gadallah & Soliman, sp. nov. (male), and E. subinops Soliman & Gadallah, sp. nov. (female), are described and illustrated. Four new records, E. clavatus (Fabricius), E. hamoni complex, E. inops Steffan, and E. torymoides (Risbec), are also reported. An illustrated key to species is provided.
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Affiliation(s)
- Neveen S. Gadallah
- Entomology Department, Faculty of Science, Cairo University, Giza, EgyptCairo UniversityGizaEgypt
| | - Ahmed M. Soliman
- Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. BOX 2460, Riyadh 11451, Saudi ArabiaKing Saud UniversityRiyadhSaudi Arabia
- Zoology Department, Faculty of Science (Boys), Al-Azhar University, P.O. Box 11884, Nasr City, Cairo, EgyptAl-Azhar UniversityCairoEgypt
| | - Hathal M. Al Dhafer
- Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. BOX 2460, Riyadh 11451, Saudi ArabiaKing Saud UniversityRiyadhSaudi Arabia
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38
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Molin AD, Woolley JB. Notes on types of Australian Chartocerus Motschulsky (Hymenoptera: Signiphoridae). J NAT HIST 2020. [DOI: 10.1080/00222933.2020.1785573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ana Dal Molin
- Departamento de Microbiologia e Parasitologia, Universidade Federal do Rio Grande do Norte, Natal, Brazil
- Instituto Nacional de Ciência e Tecnologia dos Hymenoptera Parasitoides (INCT/HYMPAR)/laboratório de Biodiversidade de Insetos, DCBIO, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - James B. Woolley
- Department of Entomology, Texas A&M University, College Station, TX, USA
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Gokhman VE. Chromosomes of parasitic wasps of the superfamily Chalcidoidea (Hymenoptera): An overview. COMPARATIVE CYTOGENETICS 2020; 14:399-416. [PMID: 36761105 PMCID: PMC9849058 DOI: 10.3897/compcytogen.v14i3.56535] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/15/2020] [Indexed: 06/18/2023]
Abstract
An overview of the current knowledge of chromosome sets of the parasitoid superfamily Chalcidoidea is given. Karyotypes of approximately 240 members of this group, i.e. just above one percent of described species, are studied up to now. Techniques for obtaining and analyzing preparations of chalcid chromosomes are outlined, including the so-called "traditional" and "modern" methods of differential staining as well as fluorescence in situ hybridization (FISH). Among the Chalcidoidea, the haploid chromosome number can vary from n = 3 to n = 11, with a clear mode at n = 6 and a second local maximum at n = 10. In this group, most chromosomes are either metacentric or submetacentric, but acrocentrics and/or subtelocentrics also can predominate, especially within karyotypes of certain Chalcidoidea with higher chromosome numbers. The following main types of chromosomal mutations are characteristic of chalcid karyotypes: inversions, fusions, translocations, polyploidy, aneuploidy and B chromosome variation. Although karyotype evolution of this superfamily was mainly studied using phylogenetic reconstructions based on morphological and/or molecular characters, chromosomal synapomorphies of certain groups were also revealed. Taxonomic implications of karyotypic features of the Chalcidoidea are apparently the most important at the species level, especially among cryptic taxa.
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Affiliation(s)
- Vladimir E. Gokhman
- Botanical Garden, Moscow State University, Moscow 119234, RussiaMoscow State UniversityMoscowRussia
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40
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Fatouros NE, Cusumano A, Bin F, Polaszek A, van Lenteren JC. How to escape from insect egg parasitoids: a review of potential factors explaining parasitoid absence across the Insecta. Proc Biol Sci 2020; 287:20200344. [PMID: 32693731 PMCID: PMC7423650 DOI: 10.1098/rspb.2020.0344] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/30/2020] [Indexed: 01/01/2023] Open
Abstract
The egg is the first life stage directly exposed to the environment in oviparous animals, including many vertebrates and most arthropods. Eggs are vulnerable and prone to mortality risks. In arthropods, one of the most common egg mortality factors is attack from parasitoids. Yet, parasitoids that attack the egg stage are absent in more than half of all insect (sub)orders. In this review, we explore possible causes explaining why eggs of some insect taxa are not parasitized. Many insect (sub)orders that are not attacked by egg parasitoids lack herbivorous species, with some notable exceptions. Factors we consider to have led to escape from egg parasitism are parental egg care, rapid egg development, small egg size, hiding eggs, by e.g. placing them into the soil, applying egg coatings or having thick chorions preventing egg penetration, eusociality, and egg cannibalism. A quantitative network analysis of host-parasitoid associations shows that the five most-speciose genera of egg parasitoids display patterns of specificity with respect to certain insect orders, especially Lepidoptera and Hemiptera, largely including herbivorous species that deposit their eggs on plants. Finally, we discuss the many counteradaptations that particularly herbivorous species have developed to lower the risk of attack by egg parasitoids.
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Affiliation(s)
- N. E. Fatouros
- Biosystematics Group, Wageningen University, Wageningen, The Netherlands
| | - A. Cusumano
- Department of Agricultural, Food and Forest Sciences, University of Palermo, Palermo, Italy
| | - F. Bin
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, Italy
| | - A. Polaszek
- Department of Life Sciences, Natural History Museum, London, UK
| | - J. C. van Lenteren
- Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands
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41
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Strong phylogenetic constraint on transition metal incorporation in the mandibles of the hyper-diverse Hymenoptera (Insecta). ORG DIVERS EVOL 2020. [DOI: 10.1007/s13127-020-00448-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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42
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Yang CY, Mori K, Kim J, Kwon KB. Identification and field bioassays of the sex pheromone of Eurytoma maslovskii (Hymenoptera: Eurytomidae). Sci Rep 2020; 10:10281. [PMID: 32581339 PMCID: PMC7314779 DOI: 10.1038/s41598-020-67252-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/04/2020] [Indexed: 11/30/2022] Open
Abstract
Long-range sex pheromones are generally considered to be a main cue for mate recognition in the order Hymenoptera. Although considerable attention has been given to the identification of semiochemicals in the superfamily Chalcidoidea, which comprises 19 families, no study has identified active components in a field bioassay. We herein report the sensitive and selective pheromone communication system of the Korean apricot wasp, Eurytoma maslovskii (Eurytomidae), whose larvae feed on Prunus mume seeds. Using gas chromatography coupled with electroantennographic detection (GC-EAD) and mass spectrometry (GC-MS), we detected 2,10-dimethyldodecyl propionate and 2,8-dimethyldecyl propionate in thoracic extracts of female E. maslovskii at a ratio of 8:2 as the active pheromone components. Field experiments showed that the attractive effect of the two compounds is highly enantioselective. Racemic 2,10-dimethyldodecyl propionate and 2,8-dimethyldecyl propionate were not attractive to E. maslovskii males. In bioassays with single enantiomers, the (2 S,10 R)-enantiomer was highly attractive to male wasps, and the (2 S,8 S)-enantiomer was also attractive, although to a lesser degree. No synergistic effect between (2 S,10 R)- and (2 S,8 S)-enantiomers was identified, and the (2 S,10 R)-enantiomer alone caught significantly more males than the natural pheromone extracts. The addition of other enantiomers to the (2 S,10 R)-isomer significantly decreased the attraction of conspecific males. In addition, a very low dose of synthetic pheromone attracted conspecific males, showing that both female signaling and male response traits may have evolved to contribute to species-specific sexual communication in this species.
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Affiliation(s)
- Chang Yeol Yang
- Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Wanju, Republic of Korea.
| | - Kenji Mori
- Photosensitive Materials Research Center, Toyo Gosei Co., Ltd, 4-2-1 Wakahagi, Inzai-shi, Chiba, 270-1609, Japan
| | - Junheon Kim
- Forest Insect Pests and Diseases Division, National Institute of Forest Science, Seoul, Republic of Korea
| | - Ki Bong Kwon
- AD Corporation, Andong, Gyeongsangbuk-do, Republic of Korea
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Burks RA, Heraty JM. First described fossil representatives of the parasitoid wasp taxa Asaphesinae n. n. and Eunotinae (Hymenoptera: Chalcidoidea: Pteromalidae sensu lato) from Eocene Baltic amber. J NAT HIST 2020. [DOI: 10.1080/00222933.2020.1747653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Roger A. Burks
- Department of Entomology, University of California, Riverside, CA, USA
| | - John M. Heraty
- Department of Entomology, University of California, Riverside, CA, USA
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44
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Gumovsky A, Bazhenova T, van Noort S. First record of the genus Setelacher Bouček (Hymenoptera: Eulophidae: Eulophinae) from the Afrotropical region, with description of a new species. J NAT HIST 2020. [DOI: 10.1080/00222933.2020.1764647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Alex Gumovsky
- Department of Taxonomy of Entomophagous Insects and Ecological Principles of Biocontrol, Schmalhausen Institute of Zoology, Kyiv, Ukraine
- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tetyana Bazhenova
- Department of Taxonomy of Entomophagous Insects and Ecological Principles of Biocontrol, Schmalhausen Institute of Zoology, Kyiv, Ukraine
| | - Simon van Noort
- Research and Exhibitions Department, South African Museum, Iziko Museums of South Africa, Cape Town, South Africa
- Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa
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Rasplus JY, Blaimer BB, Brady SG, Burks RA, Delvare G, Fisher N, Gates M, Gauthier N, Gumovsky AV, Hansson C, Heraty JM, Fusu L, Nidelet S, Pereira RA, Sauné L, Ubaidillah R, Cruaud A. A first phylogenomic hypothesis for Eulophidae (Hymenoptera, Chalcidoidea). J NAT HIST 2020. [DOI: 10.1080/00222933.2020.1762941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Jean-Yves Rasplus
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, University of Montpellier, Montpellier, France
| | - Bonnie B. Blaimer
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, USA
| | - Seán G. Brady
- Department of Entomology, Smithsonian Institution, National Museum of Natural History, Washington, DC, USA
| | - Roger A. Burks
- Department of Entomology, University of California, Riverside, CA, USA
| | | | - Nicole Fisher
- Digital Collections and Informatics, National Research Collections Australia (NRCA), CSIRO, Canberra, Australia
| | - Michael Gates
- USDA, ARS, SEL, C/o Smithsonian Institution, National Museum of Natural History, Washington, DC, USA
| | - Nathalie Gauthier
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, University of Montpellier, Montpellier, France
| | - Alex V. Gumovsky
- Schmalhausen Institute of Zoology, NAS of Ukraine, Kiev, Ukraine
- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Christer Hansson
- Museum of Biology (Entomology), Lund University, Lund, Sweden
- Faculty of Biology and CERNESIM, Al. I. Cuza University, Iasi, Romania
| | - John M. Heraty
- Department of Entomology, University of California, Riverside, CA, USA
| | - Lucian Fusu
- Departamento de Biologia, FFCLRP – USP, Ribeirão Preto, Brazil
| | - Sabine Nidelet
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, University of Montpellier, Montpellier, France
| | | | - Laure Sauné
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, University of Montpellier, Montpellier, France
| | | | - Astrid Cruaud
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, University of Montpellier, Montpellier, France
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Novel gene rearrangement in the mitochondrial genome of Pachyneuron aphidis (Hymenoptera: Pteromalidae). Int J Biol Macromol 2020; 149:1207-1212. [PMID: 32018006 DOI: 10.1016/j.ijbiomac.2020.01.308] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/04/2020] [Accepted: 01/31/2020] [Indexed: 11/21/2022]
Abstract
Species in Hymenoptera usually show exceptionally high rates of mitochondrial molecular evolution and dramatic gene rearrangements, which has been attributed to their parasitic lifestyle. However, mitochondrial genome (mitogenome) of chalcidoid wasps is still poorly understood and the evolution of gene rearrangements is still unclear. In this study, the nearly complete mitogenome of Pachyneuron aphidis, a chalcidoid wasp mainly hyperparasitizes the Aphidius gifuensis, was sequenced using a next-generation sequencing strategy. This genome is 15,137 bp in length, including 13 PCGs, 22 tRNAs, two rRNAs and a partial control region. Alignment with other Chalcidoidea mitogenomes revealed a novel inversion in the srRNA-trnV gene cluster in P. aphidis, which is the first of its kind to be reported in Chalcidoidea. Breakpoint distances analysis showed the high value of chalcidoid wasps compare to the ancestral arrangement pattern, which reflected as extensive gene rearrangements. Despite the high frequency of gene rearrangements in these insects, analyses of gene rearrangement and phylogenetic trees showed that species from the same family and the genus tent to have similar gene orders, and the conserved gene blocks (ND3-trnG, srRNA-trnV and COIII-ATP6-ATP8-trnD-trnK-COII-trnL2-COI) can usually be identified, especially at the family level of chalcidoid wasps.
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47
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Rago A, Werren JH, Colbourne JK. Sex biased expression and co-expression networks in development, using the hymenopteran Nasonia vitripennis. PLoS Genet 2020; 16:e1008518. [PMID: 31986136 PMCID: PMC7004391 DOI: 10.1371/journal.pgen.1008518] [Citation(s) in RCA: 7] [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: 03/12/2019] [Revised: 02/06/2020] [Accepted: 11/13/2019] [Indexed: 12/17/2022] Open
Abstract
Sexual dimorphism requires regulation of gene expression in developing organisms. These developmental differences are caused by differential expression of genes and isoforms. The effect of expressing a gene is also influenced by which other genes are simultaneously expressed (functional interactions). However, few studies have described how these processes change across development. We compare the dynamics of differential expression, isoform switching and functional interactions in the sexual development of the model parasitoid wasp Nasonia vitripennis, a system that permits genome wide analysis of sex bias from early embryos to adults. We find relatively little sex-bias in embryos and larvae at the gene level, but several sub-networks show sex-biased functional interactions in early developmental stages. These networks provide new candidates for hymenopteran sex determination, including histone modification. In contrast, sex-bias in pupae and adults is driven by the differential expression of genes. We observe sex-biased isoform switching consistently across development, but mostly in genes that are already differentially expressed. Finally, we discover that sex-biased networks are enriched by genes specific to the Nasonia clade, and that those genes possess the topological properties of key regulators. These findings suggest that regulators in sex-biased networks evolve more rapidly than regulators of other developmental networks.
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Affiliation(s)
- Alfredo Rago
- School of Biosciences, The University of Birmingham, Birmingham, United Kingdom
| | - John H. Werren
- Department of Biology, University of Rochester, Rochester, NY, United States of America
| | - John K. Colbourne
- School of Biosciences, The University of Birmingham, Birmingham, United Kingdom
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48
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Sharko FS, Nedoluzhko AV, Lê BM, Tsygankova SV, Boulygina ES, Rastorguev SM, Sokolov AS, Rodriguez F, Mazur AM, Polilov AA, Benton R, Evgen'ev MB, Arkhipova IR, Prokhortchouk EB, Skryabin KG. A partial genome assembly of the miniature parasitoid wasp, Megaphragma amalphitanum. PLoS One 2019; 14:e0226485. [PMID: 31869362 PMCID: PMC6927652 DOI: 10.1371/journal.pone.0226485] [Citation(s) in RCA: 6] [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: 01/18/2019] [Accepted: 11/26/2019] [Indexed: 12/18/2022] Open
Abstract
Body size reduction, also known as miniaturization, is an important evolutionary process that affects a number of physiological and phenotypic traits and helps animals conquer new ecological niches. However, this process is poorly understood at the molecular level. Here, we report genomic and transcriptomic features of arguably the smallest known insect-the parasitoid wasp, Megaphragma amalphitanum (Hymenoptera: Trichogrammatidae). In contrast to expectations, we find that the genome and transcriptome sizes of this parasitoid wasp are comparable to other members of the Chalcidoidea superfamily. Moreover, compared to other chalcid wasps the gene content of M. amalphitanum is remarkably conserved. Intriguingly, we observed significant changes in M. amalphitanum transposable element dynamics over time, in which an initial burst was followed by suppression of activity, possibly due to a recent reinforcement of the genome defense machinery. Overall, while the M. amalphitanum genomic data reveal certain features that may be linked to the unusual biological properties of this organism, miniaturization is not associated with a large decrease in genome complexity.
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Affiliation(s)
- Fedor S. Sharko
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
- National Research Center “Kurchatov Institute”, Moscow, Russia
| | - Artem V. Nedoluzhko
- National Research Center “Kurchatov Institute”, Moscow, Russia
- Nord University, Faculty of Biosciences and Aquaculture, Bodø, Norway
| | - Brandon M. Lê
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | | | | | | | - Alexey S. Sokolov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Fernando Rodriguez
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | - Alexander M. Mazur
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Alexey A. Polilov
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
| | - Richard Benton
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | | | - Irina R. Arkhipova
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | - Egor B. Prokhortchouk
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
| | - Konstantin G. Skryabin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
- National Research Center “Kurchatov Institute”, Moscow, Russia
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
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49
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Wang A, Peng Y, Harder LD, Huang J, Yang D, Zhang D, Liao W. The nature of interspecific interactions and co-diversification patterns, as illustrated by the fig microcosm. THE NEW PHYTOLOGIST 2019; 224:1304-1315. [PMID: 31494940 PMCID: PMC6856861 DOI: 10.1111/nph.16176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 09/02/2019] [Indexed: 05/05/2023]
Abstract
Interactions between mutualists, competitors, and antagonists have contrasting ecological effects that, sustained over generations, can influence micro- and macroevolution. Dissimilar benefits and costs for these interactions should cause contrasting co-diversification patterns between interacting clades, with prevalent co-speciation by mutualists, association loss by competitors, and host switching by antagonists. We assessed these expectations for a local assemblage of 26 fig species (Moraceae: Ficus), 26 species of mutualistic (pollinating), and 33 species of parasitic (galling) wasps (Chalcidoidea). Using newly acquired gene sequences, we inferred the phylogenies for all three clades. We then compared the three possible pairs of phylogenies to assess phylogenetic congruence and the relative frequencies of co-speciation, association duplication, switching, and loss. The paired phylogenies of pollinators with their mutualists and competitors were significantly congruent, unlike that of figs and their parasites. The distributions of macroevolutionary events largely agreed with expectations for mutualists and antagonists. By contrast, that for competitors involved relatively frequent association switching, as expected, but also unexpectedly frequent co-speciation. The latter result likely reflects the heterogeneous nature of competition among fig wasps. These results illustrate the influence of different interspecific interactions on co-diversification, while also revealing its dependence on specific characteristics of those interactions.
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Affiliation(s)
- Ai‐Ying Wang
- State Key Laboratory of Earth Surface Processes and Resource EcologyMinistry of Education Key Laboratory for Biodiversity Science and Ecological EngineeringBeijing Normal UniversityBeijingChina
| | - Yan‐Qiong Peng
- CAS Key Laboratory of Tropical Forest EcologyXishuangbanna Tropical Botanical GardenChinese Academy of SciencesKunmingChina
| | - Lawrence D. Harder
- Department of Biological SciencesUniversity of Calgary2500 University Drive NWCalgaryABCanada
| | - Jian‐Feng Huang
- CAS Key Laboratory of Tropical Forest EcologyXishuangbanna Tropical Botanical GardenChinese Academy of SciencesKunmingChina
| | - Da‐Rong Yang
- CAS Key Laboratory of Tropical Forest EcologyXishuangbanna Tropical Botanical GardenChinese Academy of SciencesKunmingChina
| | - Da‐Yong Zhang
- State Key Laboratory of Earth Surface Processes and Resource EcologyMinistry of Education Key Laboratory for Biodiversity Science and Ecological EngineeringBeijing Normal UniversityBeijingChina
| | - Wan‐Jin Liao
- State Key Laboratory of Earth Surface Processes and Resource EcologyMinistry of Education Key Laboratory for Biodiversity Science and Ecological EngineeringBeijing Normal UniversityBeijingChina
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50
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Zhang YZ, Xiong M, Zhou QS, Jiang GC, Zhu CD. The mitochondrial genome of Platencyrtus parkeri Feriere (Hymenoptera: Encyrtidae). Mitochondrial DNA B Resour 2019; 4:3479-3481. [PMID: 33366048 PMCID: PMC7707260 DOI: 10.1080/23802359.2019.1674729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 09/25/2019] [Indexed: 10/29/2022] Open
Abstract
The mitochondrial genome of the Platencyrtus parkeri Feriere (Hymenoptera: Encyrtidae) was obtained via next-generation sequencing. The assembled mitogenome is 13,393 bp in length, which contains 33 classical eukaryotic mitochondrial genes with three tRNA genes and rrnS gene missing. All the 13 PCGs begin with typical ATN codons. The 19 detected tRNAs range from 58 to 70 bp in length with typical cloverleaf structure except for trnS1, whose dihydrouridine (DHU) arm forms a simple loop. Meanwhile, they have six tRNAs inserted between nad2 and nad3 compared with Encyrtus infelix. Phylogenetic analysis highly supported the monophyly of Pteromalidae. Eupelmidae and Encyrtidae have a close relationship. Within Encyrtidae, Platencyrtus parkeri Feriere and Encyrtus infelix are close to each other.
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Affiliation(s)
- Yan-Zhou Zhang
- Jiangsu Key Laboratory of Biofunctional Molecule, School of Life Sciences, Chemistry & Chemical Engineering, Jiangsu Second Normal University, Nanjing, China
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Mei Xiong
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences (UCAS), Beijing, China
| | - Qing-Song Zhou
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Gong-Cheng Jiang
- Jiangsu Key Laboratory of Biofunctional Molecule, School of Life Sciences, Chemistry & Chemical Engineering, Jiangsu Second Normal University, Nanjing, China
| | - Chao-Dong Zhu
- Jiangsu Key Laboratory of Biofunctional Molecule, School of Life Sciences, Chemistry & Chemical Engineering, Jiangsu Second Normal University, Nanjing, China
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences (UCAS), Beijing, China
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