Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front
Abstract Despite strong historical biogeographical links between benthic faunal assemblages of the Magellan region of South America and the Antarctic Peninsula, very few studies have documented contemporary movement and gene flow in or out of the Southern Ocean, especially across the Antarctic Polar...
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crwiley:10.1002/ece3.9333 2024-09-30T14:25:40+00:00 Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front Maroni, Paige J. Wilson, Nerida G. Australian Research Council 2022 http://dx.doi.org/10.1002/ece3.9333 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.9333 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.9333 en eng Wiley http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 12, issue 9 ISSN 2045-7758 2045-7758 journal-article 2022 crwiley https://doi.org/10.1002/ece3.9333 2024-09-05T05:08:28Z Abstract Despite strong historical biogeographical links between benthic faunal assemblages of the Magellan region of South America and the Antarctic Peninsula, very few studies have documented contemporary movement and gene flow in or out of the Southern Ocean, especially across the Antarctic Polar Front (APF). In fact, oceanographic barriers such as the APF and Antarctica's long geologic isolation have substantially separated the continents and facilitated the evolution of endemic marine taxa found within the Antarctic region. The Southern Ocean benthic sea slug complex, Doris “ kerguelenensis ,” are a group of direct‐developing, simultaneous hermaphrodites that lack a dispersive larval stage. To date, there are 59 highly divergent species known within this complex. Here, we provide evidence to show intraspecific genetic connectivity occurs across the APF for multiple species within the D. “ kerguelenensis ” nudibranch species complex. We addressed questions of genetic connectivity by examining the phylogeographic structure of the three best‐sampled D. “ kerguelenensis ” species and another three trans‐APF species using the protein coding mtDNA gene, cytochrome oxidase I. We also highlight alternative refugia uses among species with the same life history traits (i.e., benthic and direct developers) and for some species, extremely large distributions are established (e.g., circumpolarity). By improving our sampling of these nudibranchs, we gain better insight into the population structure and connectivity of the Antarctic region. This work also demonstrates how difficult it is to make generalizations across Antarctic marine species, even among ecologically‐similar, closely related species. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Southern Ocean Wiley Online Library Antarctic Southern Ocean The Antarctic Antarctic Peninsula Ecology and Evolution 12 9 |
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English |
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Abstract Despite strong historical biogeographical links between benthic faunal assemblages of the Magellan region of South America and the Antarctic Peninsula, very few studies have documented contemporary movement and gene flow in or out of the Southern Ocean, especially across the Antarctic Polar Front (APF). In fact, oceanographic barriers such as the APF and Antarctica's long geologic isolation have substantially separated the continents and facilitated the evolution of endemic marine taxa found within the Antarctic region. The Southern Ocean benthic sea slug complex, Doris “ kerguelenensis ,” are a group of direct‐developing, simultaneous hermaphrodites that lack a dispersive larval stage. To date, there are 59 highly divergent species known within this complex. Here, we provide evidence to show intraspecific genetic connectivity occurs across the APF for multiple species within the D. “ kerguelenensis ” nudibranch species complex. We addressed questions of genetic connectivity by examining the phylogeographic structure of the three best‐sampled D. “ kerguelenensis ” species and another three trans‐APF species using the protein coding mtDNA gene, cytochrome oxidase I. We also highlight alternative refugia uses among species with the same life history traits (i.e., benthic and direct developers) and for some species, extremely large distributions are established (e.g., circumpolarity). By improving our sampling of these nudibranchs, we gain better insight into the population structure and connectivity of the Antarctic region. This work also demonstrates how difficult it is to make generalizations across Antarctic marine species, even among ecologically‐similar, closely related species. |
author2 |
Australian Research Council |
format |
Article in Journal/Newspaper |
author |
Maroni, Paige J. Wilson, Nerida G. |
spellingShingle |
Maroni, Paige J. Wilson, Nerida G. Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front |
author_facet |
Maroni, Paige J. Wilson, Nerida G. |
author_sort |
Maroni, Paige J. |
title |
Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front |
title_short |
Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front |
title_full |
Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front |
title_fullStr |
Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front |
title_full_unstemmed |
Multiple Doris “kerguelenensis” (Nudibranchia) species span the Antarctic Polar Front |
title_sort |
multiple doris “kerguelenensis” (nudibranchia) species span the antarctic polar front |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ece3.9333 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.9333 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.9333 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
op_source |
Ecology and Evolution volume 12, issue 9 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.9333 |
container_title |
Ecology and Evolution |
container_volume |
12 |
container_issue |
9 |
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1811645961330491392 |