Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data
Marine animals such as the southern elephant seal ( Mirounga leonina ) rely on a productive marine environment and are vulnerable to oceanic changes that can affect their reproduction and survival rates. Davis Base, Antarctica, acts as a moulting site for southern elephant seals that forage in Prydz...
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2022
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/2df7ab6d-8364-4bbd-ab74-81c274f92f31 2024-09-30T14:25:21+00:00 Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data Chua, Michelle Ho, Simon Y. W. McMahon, Clive R. Jonsen, Ian D. de Bruyn, Mark 2022-07 application/pdf https://researchers.mq.edu.au/en/publications/2df7ab6d-8364-4bbd-ab74-81c274f92f31 https://doi.org/10.1007/s00300-022-03058-9 https://research-management.mq.edu.au/ws/files/209850030/209265706.pdf http://www.scopus.com/inward/record.url?scp=85132843763&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Chua , M , Ho , S Y W , McMahon , C R , Jonsen , I D & de Bruyn , M 2022 , ' Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica : combining population genetics and tracking data ' , Polar Biology , vol. 45 , no. 7 , pp. 1163-1174 . https://doi.org/10.1007/s00300-022-03058-9 Southern elephant seals Genetic diversity Mitochondrial DNA Population genetics Moulting Animal tracking article 2022 ftmacquarieunicr https://doi.org/10.1007/s00300-022-03058-9 2024-09-18T23:49:10Z Marine animals such as the southern elephant seal ( Mirounga leonina ) rely on a productive marine environment and are vulnerable to oceanic changes that can affect their reproduction and survival rates. Davis Base, Antarctica, acts as a moulting site for southern elephant seals that forage in Prydz Bay, but the mitochondrial haplotype diversity and natal source populations of these seals have not been characterized. In this study, we combined genetic and animal tracking data on these moulting seals to identify levels of mitochondrial haplotype diversity, natal source population, and movement behaviours during foraging and haul-out periods. Using partial sequences of the mitochondrial control region, we identified two major breeding mitochondrial lineages of seals at Davis Base. We found that the majority of the seals originated from breeding stocks within the South Atlantic Ocean and South Indian Ocean. One seal was grouped with the Macquarie Island breeding stock (South Pacific Ocean). The Macquarie Island population, unlike the other two stocks, is decreasing in size. Tracking data revealed long-distance foraging activity of the Macquarie Island seal around Crozet Islands. We speculate that changes to the Antarctic marine environment can result in a shift in foraging and movement strategies, which subsequently affects seal population growth rates. Article in Journal/Newspaper Antarc* Antarctic Antarctica Crozet Islands Elephant Seal Elephant Seals Macquarie Island Mirounga leonina Polar Biology Prydz Bay South Atlantic Ocean Southern Elephant Seal Southern Elephant Seals Macquarie University Research Portal Antarctic The Antarctic Prydz Bay Pacific Indian Polar Biology 45 7 1163 1174 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
Southern elephant seals Genetic diversity Mitochondrial DNA Population genetics Moulting Animal tracking |
spellingShingle |
Southern elephant seals Genetic diversity Mitochondrial DNA Population genetics Moulting Animal tracking Chua, Michelle Ho, Simon Y. W. McMahon, Clive R. Jonsen, Ian D. de Bruyn, Mark Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data |
topic_facet |
Southern elephant seals Genetic diversity Mitochondrial DNA Population genetics Moulting Animal tracking |
description |
Marine animals such as the southern elephant seal ( Mirounga leonina ) rely on a productive marine environment and are vulnerable to oceanic changes that can affect their reproduction and survival rates. Davis Base, Antarctica, acts as a moulting site for southern elephant seals that forage in Prydz Bay, but the mitochondrial haplotype diversity and natal source populations of these seals have not been characterized. In this study, we combined genetic and animal tracking data on these moulting seals to identify levels of mitochondrial haplotype diversity, natal source population, and movement behaviours during foraging and haul-out periods. Using partial sequences of the mitochondrial control region, we identified two major breeding mitochondrial lineages of seals at Davis Base. We found that the majority of the seals originated from breeding stocks within the South Atlantic Ocean and South Indian Ocean. One seal was grouped with the Macquarie Island breeding stock (South Pacific Ocean). The Macquarie Island population, unlike the other two stocks, is decreasing in size. Tracking data revealed long-distance foraging activity of the Macquarie Island seal around Crozet Islands. We speculate that changes to the Antarctic marine environment can result in a shift in foraging and movement strategies, which subsequently affects seal population growth rates. |
format |
Article in Journal/Newspaper |
author |
Chua, Michelle Ho, Simon Y. W. McMahon, Clive R. Jonsen, Ian D. de Bruyn, Mark |
author_facet |
Chua, Michelle Ho, Simon Y. W. McMahon, Clive R. Jonsen, Ian D. de Bruyn, Mark |
author_sort |
Chua, Michelle |
title |
Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data |
title_short |
Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data |
title_full |
Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data |
title_fullStr |
Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data |
title_full_unstemmed |
Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica:combining population genetics and tracking data |
title_sort |
movements of southern elephant seals ( mirounga leonina ) from davis base, antarctica:combining population genetics and tracking data |
publishDate |
2022 |
url |
https://researchers.mq.edu.au/en/publications/2df7ab6d-8364-4bbd-ab74-81c274f92f31 https://doi.org/10.1007/s00300-022-03058-9 https://research-management.mq.edu.au/ws/files/209850030/209265706.pdf http://www.scopus.com/inward/record.url?scp=85132843763&partnerID=8YFLogxK |
geographic |
Antarctic The Antarctic Prydz Bay Pacific Indian |
geographic_facet |
Antarctic The Antarctic Prydz Bay Pacific Indian |
genre |
Antarc* Antarctic Antarctica Crozet Islands Elephant Seal Elephant Seals Macquarie Island Mirounga leonina Polar Biology Prydz Bay South Atlantic Ocean Southern Elephant Seal Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Antarctica Crozet Islands Elephant Seal Elephant Seals Macquarie Island Mirounga leonina Polar Biology Prydz Bay South Atlantic Ocean Southern Elephant Seal Southern Elephant Seals |
op_source |
Chua , M , Ho , S Y W , McMahon , C R , Jonsen , I D & de Bruyn , M 2022 , ' Movements of southern elephant seals ( Mirounga leonina ) from Davis Base, Antarctica : combining population genetics and tracking data ' , Polar Biology , vol. 45 , no. 7 , pp. 1163-1174 . https://doi.org/10.1007/s00300-022-03058-9 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00300-022-03058-9 |
container_title |
Polar Biology |
container_volume |
45 |
container_issue |
7 |
container_start_page |
1163 |
op_container_end_page |
1174 |
_version_ |
1811644576589414400 |