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Kim DH, Jeong H, Kim MS, Kim S, Souissi S, Park HG, Hagiwara A, Lee JS. Identification and characterization of homeobox gene clusters in harpacticoid and calanoid copepods. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART B, MOLECULAR AND DEVELOPMENTAL EVOLUTION 2022; 338:215-224. [PMID: 34855303 DOI: 10.1002/jez.b.23112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/10/2021] [Accepted: 11/21/2021] [Indexed: 06/13/2023]
Abstract
In this study, we have identified the entire complement of typical homeobox (Hox) genes (Lab, Pb, Dfd, Scr, Antp, Ubx, Abd-A, and Abd-B) in harpacticoid and calanoid copepods and compared them with the cyclopoid copepod Paracyclopina nana. The harpacticoid copepods Tigriopus japonicus and Tigriopus kingsejongensis have seven Hox genes (Lab, Dfd, Scr, Antp, Ubx, Abd-A, and Abd-B) and the Pb and Ftz genes are also present in the cyclopoid copepod P. nana. In the Hox gene cluster of the calanoid copepod Eurytemora affinis, all the Hox genes were present linearly in the genome but the Antp gene was duplicated. Of the three representative copepods, the P. nana Hox gene cluster was the most compact due to its small genome size. The Hox gene expression profile patterns in the three representative copepods were stage-specific. The Lab, Dfd, Scr, Pb, Ftz, and Hox3 genes showed a high expression in early developmental stages but Antp, Ubx, Abd-A, and Abd-B genes were mostly expressed in later developmental stages, implying that these Hox genes may be closely associated with the development of segment identity during early development.
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Affiliation(s)
- Duck-Hyun Kim
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon, South Korea
| | - Haksoo Jeong
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon, South Korea
| | - Min-Sub Kim
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon, South Korea
| | - Sanghee Kim
- Division of Life Sciences, Korea Polar Research Institute, Incheon, South Korea
| | - Sami Souissi
- Laboratoire d'Océanologie et de Géosciences, Station marine de Wimereux, CNRS, UMR 8187 LOG, Université de Lille, Université du Littoral Côte d'Opale, Lille, France
| | - Heum Gi Park
- Department of Marine Resource Development, College of Life Sciences, Gangneung-Wonju National University, Gangneung, South Korea
| | - Atsushi Hagiwara
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, Japan
- Organization for Marine Science and Technology, Nagasaki University, Nagasaki, Japan
| | - Jae-Seong Lee
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon, South Korea
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Breen CJ, Cahill AE. Population growth of microcrustaceans in water from habitats with differing salinities. PeerJ 2021; 9:e12378. [PMID: 34820173 PMCID: PMC8588865 DOI: 10.7717/peerj.12378] [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: 06/25/2021] [Accepted: 10/04/2021] [Indexed: 11/20/2022] Open
Abstract
Inland salt marshes are a rare habitat in North America. Little is known about the invertebrates in these habitats and their ability to cope with the brackish conditions of the marsh. We studied the population growth of ostracods found in an inland salt marsh (Maple River salt marsh) and of copepods found in the wetland habitat immediately adjacent to the freshwater Kalamazoo River. By studying these species in water from both habitats, we aimed to find out if they performed differently in the two habitats. We also tested Daphnia pulex in water from the two habitats due to the history of Daphnia spp. as model organisms. We found that copepods performed better in water taken from the Maple River salt marsh, and the ostracods and D. pulex performed equally well in either water. This was unexpected, since ostracods are found in the salt marsh and copepods in the freshwater area. As a second experiment, we tested the invertebrates in pairwise interactions. In water from the Kalamazoo River, ostracods outperformed the other two species, but there was no difference between D. pulex and copepods. No species outperformed the other in salt marsh water. Our results show no local adaptation to salinity, suggesting that ostracods and copepods may be limited in their respective distributions by dispersal limitation or habitat suitability.
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Ni Y, Ebido CC, Odii EC, Wang J, Orakwelu CH, Abonyi FC, Ngene CI, Okoro JO, Ubachukwu PO, Hu W, Yin M. Phylogeography and genetic diversity of the copepod family Cyclopidae (Crustacea: Cyclopoida) from freshwater ecosystems of Southeast Nigeria. BMC Evol Biol 2020; 20:45. [PMID: 32316908 PMCID: PMC7171763 DOI: 10.1186/s12862-020-01608-5] [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: 07/11/2019] [Accepted: 03/31/2020] [Indexed: 11/13/2022] Open
Abstract
Background Copepods are key components of aquatic ecosystems and can help regulate the global carbon cycle. Much attention has been paid to the species diversity of copepods worldwide, but the phylogeography and genetic diversity of copepods in Nigeria is unexplored. Results Using a mitochondrial cytochrome c oxidase subunit I marker, we preformed phylogenetic and phylogeographic analyses for Cyclopidae copepods in Southeast Nigeria. A high species diversity of Cyclopidae in Nigeria: 5 species of Tropocyclops, 5 species of Mesocyclops and 2 species of Thermocyclops from Cyclopidae were identified in 15 populations. Moreover, we detected 18 unique haplotypes, which fell into two distinct clades. Pairwise genetic distances (uncorrected p-distances) among the species of Cyclopidae ranged from 0.05 to 0.257. Several species co-existed in the same lake, and some haplotypes were shared among different geographic populations, suggesting a dispersal of Cyclopidae in our sampling region. Finally, we found that the population genetic diversity for each species of Cyclopidae was low in Nigeria. Conclusions Our findings explored the species diversity and distribution of copepods within the family Cyclopidae for 15 Nigerian freshwater ecosystems: a high species diversity of Cyclopidae copepods was detected over a small geographic sampling range. Results from this study contribute to a better understanding of copepod diversity of Nigerian freshwater ecosystems.
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Affiliation(s)
- Yijun Ni
- MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China
| | - Chike Chukwuenyem Ebido
- MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China
| | - Elijah Chibueze Odii
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Jinhui Wang
- MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China
| | - Chinemerem Hodges Orakwelu
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Francis Chukwuemeka Abonyi
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Chinedu Innocent Ngene
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Joseph Onyekwere Okoro
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Patience Obiageli Ubachukwu
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Wei Hu
- MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China
| | - Mingbo Yin
- MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China.
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Dupuis JR, Peigler RS, Geib SM, Rubinoff D. Phylogenomics supports incongruence between ecological specialization and taxonomy in a charismatic clade of buck moths. Mol Ecol 2018; 27:4417-4429. [DOI: 10.1111/mec.14883] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/11/2018] [Accepted: 09/20/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Julian R. Dupuis
- Department of Plant and Environmental Protection Services; University of Hawai'i at Mānoa; Honolulu Hawaii
- Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center; U.S. Department of Agriculture-Agricultural Research Service; Hilo Hawaii
| | - Richard S. Peigler
- Department of Biology; University of the Incarnate Word; San Antonio Texas
| | - Scott M. Geib
- Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center; U.S. Department of Agriculture-Agricultural Research Service; Hilo Hawaii
| | - Daniel Rubinoff
- Department of Plant and Environmental Protection Services; University of Hawai'i at Mānoa; Honolulu Hawaii
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Porter CK, Benkman CW. Assessing the Potential Contributions of Reduced Immigrant Viability and Fecundity to Reproductive Isolation. Am Nat 2017; 189:580-591. [DOI: 10.1086/691191] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Stanton K, Valentin CM, Wijnen ME, Stutstman S, Palacios JJ, Cooley AM. Absence of postmating barriers between a selfing vs. outcrossing Chilean Mimulus species pair. AMERICAN JOURNAL OF BOTANY 2016; 103:1030-1040. [PMID: 27283023 DOI: 10.3732/ajb.1600079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 05/10/2016] [Indexed: 06/06/2023]
Abstract
PREMISE OF THE STUDY Reproductive isolation between sympatric species pairs may be maintained by both pre- and postmating barriers. Here we evaluate potential barriers to mating between the outcrossing Mimulus luteus and its more highly selfing sympatric congener, M. cupreus, two members of the South American luteus complex of Mimulus. METHODS Seed set was compared following autonomous self-pollination, manual pollination, conspecific outcrossing, and sympatric and allopatric hybridization, for laboratory-maintained inbred lines and wild-collected accessions. Survival and reproductive fitness of hybrids relative to parental species were examined across environments that differed with respect to temperature and soil nutrients, two factors that vary across the ranges of M. luteus and M. cupreus. KEY RESULTS Mimulus luteus was minimally capable of autonomous self-fertilization, consistent with reliance on an animal pollinator, whereas M. cupreus was a successful selfer across all tested accessions. Postmating barriers to hybridization are negligible, in both low- and high-stress environments, across multiple sympatric and allopatric populations. CONCLUSION As in the North American M. guttatus-M. nasutus species pair, postmating barriers contribute little to isolation between M. luteus and M. cupreus. This result reinforces the importance of premating barriers, specifically species differences in reliance on, and accessibility to, animal pollinators. A unique aspect of the M. luteus-M. cupreus pair is the recent gain of red floral anthocyanin pigmentation in M. cupreus. On the basis of species differences in vegetative anthocyanin production, a facultative stress-protective response, we propose a potential stress-protective role for the constitutive floral anthocyanins of M. cupreus.
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Affiliation(s)
- Kimmy Stanton
- Whitman College Biology Department, Walla Walla, Washington 99362 USA
| | - Celine M Valentin
- Whitman College Biology Department, Walla Walla, Washington 99362 USA
| | - Marijke E Wijnen
- Whitman College Biology Department, Walla Walla, Washington 99362 USA
| | - Sage Stutstman
- Whitman College Biology Department, Walla Walla, Washington 99362 USA
| | | | - Arielle M Cooley
- Whitman College Biology Department, Walla Walla, Washington 99362 USA
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Previšić A, Gelemanović A, Urbanič G, Ternjej I. Cryptic diversity in the Western Balkan endemic copepod: Four species in one? Mol Phylogenet Evol 2016; 100:124-134. [PMID: 27063254 DOI: 10.1016/j.ympev.2016.04.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/10/2016] [Accepted: 04/06/2016] [Indexed: 10/22/2022]
Abstract
We use mitochondrial (mtCOI) and nuclear (nH3) sequence data to investigate differentiation of Eudiaptomus hadzici, a freshwater copepod endemic to the Western Balkans. E. hadzici has a disjunct distribution and morphological differences were observed at regional scale. In the current study 6 out of 7 known populations are included. We applied several species delimiting approaches, distance based methods (K2P p-distance and Automatic Barcode Gap Discovery, ABGD) using the mtCOI, Bayesian phylogeny and the Bayesian method implemented in bPTP and BPP programs using the concatenated sequences of both genes. Phylogenetic and species delimitation analyses all suggest that the nominal species E. hadzici consists of four isolated, cryptic evolutionary lineages in the Western Balkans. Each of the four lineages inhabits a single lake or a group of lakes in close proximity. They exhibit major differences in secondary sexual characters, e.g. right antennule in males. Denticulation of spine on 13th segment is substantially distinct among the four lineages, having different number and shape of tooth-like protrusions. Gene flow and dispersal are restricted to very small spatial scale, but with local differences, implying that diverse historical and contemporary processes are operating at small spatial scales in E. hadzici. In order to further examine spatial and temporal diversification patterns, we constructed a dated species tree analysis using (*)BEAST. Due to lack of reliable calibration points and taxa specific evolutionary rates, two evolutionary rates were applied and the faster one (2.6% myr) seems more plausible considering the geological history of the region. The divergence of E. hadzici lineages is dated from Early Miocene onwards with geographically close lineages diverging more recently, Late Miocene to Pleistocene and Pleistocene, respectively. Overall, our findings shed light on cryptic genetic complexity of endemics in one of European biodiversity hotspots. Moreover, this study represents one further example of integrative taxonomy, linking DNA methodology and classical taxonomy based on morphology. Therefore, it lays groundwork for future taxonomy and biogeography of freshwater microcrustaceans in the region.
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Affiliation(s)
- Ana Previšić
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia.
| | - Andrea Gelemanović
- School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia
| | - Gorazd Urbanič
- Institute for Water of the Republic of Slovenia, Hajdrihova 28 c, 1000 Ljubljana, Slovenia
| | - Ivančica Ternjej
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
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