50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals
Abstract 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‐assoc...
Published in: | Ecology and Evolution |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2021
|
Subjects: | |
Online Access: | https://doi.org/10.1002/ece3.8104 https://doaj.org/article/5721e136fbf041f38bc2ab91e09f5f9b |
id |
ftdoajarticles:oai:doaj.org/article:5721e136fbf041f38bc2ab91e09f5f9b |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:5721e136fbf041f38bc2ab91e09f5f9b 2023-05-15T13:46:46+02:00 50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals Alison C. Cleary Joseph I. Hoffman Jaume Forcada Christian Lydersen Andrew D. Lowther Kit M. Kovacs 2021-10-01T00:00:00Z https://doi.org/10.1002/ece3.8104 https://doaj.org/article/5721e136fbf041f38bc2ab91e09f5f9b EN eng Wiley https://doi.org/10.1002/ece3.8104 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8104 https://doaj.org/article/5721e136fbf041f38bc2ab91e09f5f9b Ecology and Evolution, Vol 11, Iss 20, Pp 14003-14011 (2021) Arctocephalus gazella demographic history glacial refugia single nucleotide polymorphisms Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1002/ece3.8104 2022-12-31T10:29:34Z Abstract 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. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Antarctic Peninsula Arctocephalus gazella Bouvetøya Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Bouvetøya ENVELOPE(3.358,3.358,-54.422,-54.422) Kerguelen The Antarctic Ecology and Evolution 11 20 14003 14011 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctocephalus gazella demographic history glacial refugia single nucleotide polymorphisms Ecology QH540-549.5 |
spellingShingle |
Arctocephalus gazella demographic history glacial refugia single nucleotide polymorphisms Ecology QH540-549.5 Alison C. Cleary Joseph I. Hoffman Jaume Forcada Christian Lydersen Andrew D. Lowther Kit M. Kovacs 50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
topic_facet |
Arctocephalus gazella demographic history glacial refugia single nucleotide polymorphisms Ecology QH540-549.5 |
description |
Abstract 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 |
Article in Journal/Newspaper |
author |
Alison C. Cleary Joseph I. Hoffman Jaume Forcada Christian Lydersen Andrew D. Lowther Kit M. Kovacs |
author_facet |
Alison C. Cleary Joseph I. Hoffman Jaume Forcada Christian Lydersen Andrew D. Lowther Kit M. Kovacs |
author_sort |
Alison C. Cleary |
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 |
Wiley |
publishDate |
2021 |
url |
https://doi.org/10.1002/ece3.8104 https://doaj.org/article/5721e136fbf041f38bc2ab91e09f5f9b |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) |
geographic |
Antarctic Antarctic Peninsula Bouvetøya Kerguelen The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Bouvetøya Kerguelen The Antarctic |
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 |
Ecology and Evolution, Vol 11, Iss 20, Pp 14003-14011 (2021) |
op_relation |
https://doi.org/10.1002/ece3.8104 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8104 https://doaj.org/article/5721e136fbf041f38bc2ab91e09f5f9b |
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 |
_version_ |
1766245192144257024 |