50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals
Ice is one of the most important drivers of population dynamics in polar organisms, influencing the locations, sizes, and connectivity of populations. Antarctic fur seals, Arctocephalus gazella, are particularly interesting in this regard, as they are concomitantly reliant on both ice‐associated pre...
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ftpubmed:oai:pubmedcentral.nih.gov:8525082 2023-05-15T13:32:56+02:00 50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. 2021-09-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525082/ https://doi.org/10.1002/ece3.8104 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525082/ http://dx.doi.org/10.1002/ece3.8104 © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Evol Original Research Text 2021 ftpubmed https://doi.org/10.1002/ece3.8104 2021-10-31T00:30:07Z Ice is one of the most important drivers of population dynamics in polar organisms, influencing the locations, sizes, and connectivity of populations. Antarctic fur seals, Arctocephalus gazella, are particularly interesting in this regard, as they are concomitantly reliant on both ice‐associated prey and ice‐free coastal breeding areas. We reconstructed the history of this species through the Last Glacial Maximum (LGM) using genomic sequence data from seals across their range. Population size trends and divergence events were investigated using continuous‐time size estimation analysis and divergence time estimation models. The combined results indicated that a panmictic population present prior to the LGM split into two small refugial populations during peak ice extent. Following ice decline, the western refugial population founded colonies at the South Shetlands, South Georgia, and Bouvetøya, while the eastern refugial population founded the colony on Iles Kerguelen. Postglacial population divergence times closely match geological estimates of when these coastal breeding areas became ice free. Given the predictions regarding continued future warming in polar oceans, these responses of Antarctic fur seals to past climate variation suggest it may be worthwhile giving conservation consideration to potential future breeding locations, such as areas further south along the Antarctic Peninsula, in addition to present colony areas. Text Antarc* Antarctic Antarctic Fur Seals Antarctic Peninsula Arctocephalus gazella Bouvetøya PubMed Central (PMC) Antarctic The Antarctic Antarctic Peninsula Kerguelen Bouvetøya ENVELOPE(3.358,3.358,-54.422,-54.422) Ecology and Evolution 11 20 14003 14011 |
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ftpubmed |
language |
English |
topic |
Original Research |
spellingShingle |
Original Research Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. 50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
topic_facet |
Original Research |
description |
Ice is one of the most important drivers of population dynamics in polar organisms, influencing the locations, sizes, and connectivity of populations. Antarctic fur seals, Arctocephalus gazella, are particularly interesting in this regard, as they are concomitantly reliant on both ice‐associated prey and ice‐free coastal breeding areas. We reconstructed the history of this species through the Last Glacial Maximum (LGM) using genomic sequence data from seals across their range. Population size trends and divergence events were investigated using continuous‐time size estimation analysis and divergence time estimation models. The combined results indicated that a panmictic population present prior to the LGM split into two small refugial populations during peak ice extent. Following ice decline, the western refugial population founded colonies at the South Shetlands, South Georgia, and Bouvetøya, while the eastern refugial population founded the colony on Iles Kerguelen. Postglacial population divergence times closely match geological estimates of when these coastal breeding areas became ice free. Given the predictions regarding continued future warming in polar oceans, these responses of Antarctic fur seals to past climate variation suggest it may be worthwhile giving conservation consideration to potential future breeding locations, such as areas further south along the Antarctic Peninsula, in addition to present colony areas. |
format |
Text |
author |
Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. |
author_facet |
Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. |
author_sort |
Cleary, Alison C. |
title |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_short |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_full |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_fullStr |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_full_unstemmed |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_sort |
50,000 years of ice and seals: impacts of the last glacial maximum on antarctic fur seals |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525082/ https://doi.org/10.1002/ece3.8104 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Kerguelen Bouvetøya |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Kerguelen Bouvetøya |
genre |
Antarc* Antarctic Antarctic Fur Seals Antarctic Peninsula Arctocephalus gazella Bouvetøya |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Antarctic Peninsula Arctocephalus gazella Bouvetøya |
op_source |
Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525082/ http://dx.doi.org/10.1002/ece3.8104 |
op_rights |
© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.8104 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
20 |
container_start_page |
14003 |
op_container_end_page |
14011 |
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1766037078843326464 |