The genetic legacy of extreme exploitation in a polar vertebrate
International audience Understanding the effects of human exploitation on the genetic composition of wild populations is important for predicting species persistence and adaptive potential. We therefore investigated the genetic legacy of large-scale commercial harvesting by reconstructing, on a glob...
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Online Access: | https://hal.archives-ouvertes.fr/hal-03019550 https://doi.org/10.1038/s41598-020-61560-8 |
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ftccsdartic:oai:HAL:hal-03019550v1 2023-05-15T13:57:18+02:00 The genetic legacy of extreme exploitation in a polar vertebrate Paijmans, A. J. Stoffel, Martin A. Bester, Marthan N. Cleary, Alison C. Nico De Bruyn, P J Forcada, Jaume Goebel, Michael E. Goldsworthy, Simon D. Guinet, Christophe Lydersen, Christian Kovacs, Kit M. Lowther, Andrew Hoffman, Joseph I. Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2020 https://hal.archives-ouvertes.fr/hal-03019550 https://doi.org/10.1038/s41598-020-61560-8 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-020-61560-8 hal-03019550 https://hal.archives-ouvertes.fr/hal-03019550 doi:10.1038/s41598-020-61560-8 ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.archives-ouvertes.fr/hal-03019550 Scientific Reports, Nature Publishing Group, 2020, 10 (1), pp.5089. ⟨10.1038/s41598-020-61560-8⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2020 ftccsdartic https://doi.org/10.1038/s41598-020-61560-8 2021-11-07T00:34:42Z International audience Understanding the effects of human exploitation on the genetic composition of wild populations is important for predicting species persistence and adaptive potential. We therefore investigated the genetic legacy of large-scale commercial harvesting by reconstructing, on a global scale, the recent demographic history of the Antarctic fur seal (Arctocephalus gazella), a species that was hunted to the brink of extinction by 18th and 19th century sealers. Molecular genetic data from over 2,000 individuals sampled from all eight major breeding locations across the species’ circumpolar geographic distribution, show that at least four relict populations around Antarctica survived commercial hunting. Coalescent simulations suggest that all of these populations experienced severe bottlenecks down to effective population sizes of around 150–200. Nevertheless, comparably high levels of neutral genetic variability were retained as these declines are unlikely to have been strong enough to deplete allelic richness by more than around 15%. These findings suggest that even dramatic short-term declines need not necessarily result in major losses of diversity, and explain the apparent contradiction between the high genetic diversity of this species and its extreme exploitation history. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Antarctica Arctocephalus gazella Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic The Antarctic Scientific Reports 10 1 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Paijmans, A. J. Stoffel, Martin A. Bester, Marthan N. Cleary, Alison C. Nico De Bruyn, P J Forcada, Jaume Goebel, Michael E. Goldsworthy, Simon D. Guinet, Christophe Lydersen, Christian Kovacs, Kit M. Lowther, Andrew Hoffman, Joseph I. The genetic legacy of extreme exploitation in a polar vertebrate |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Understanding the effects of human exploitation on the genetic composition of wild populations is important for predicting species persistence and adaptive potential. We therefore investigated the genetic legacy of large-scale commercial harvesting by reconstructing, on a global scale, the recent demographic history of the Antarctic fur seal (Arctocephalus gazella), a species that was hunted to the brink of extinction by 18th and 19th century sealers. Molecular genetic data from over 2,000 individuals sampled from all eight major breeding locations across the species’ circumpolar geographic distribution, show that at least four relict populations around Antarctica survived commercial hunting. Coalescent simulations suggest that all of these populations experienced severe bottlenecks down to effective population sizes of around 150–200. Nevertheless, comparably high levels of neutral genetic variability were retained as these declines are unlikely to have been strong enough to deplete allelic richness by more than around 15%. These findings suggest that even dramatic short-term declines need not necessarily result in major losses of diversity, and explain the apparent contradiction between the high genetic diversity of this species and its extreme exploitation history. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Paijmans, A. J. Stoffel, Martin A. Bester, Marthan N. Cleary, Alison C. Nico De Bruyn, P J Forcada, Jaume Goebel, Michael E. Goldsworthy, Simon D. Guinet, Christophe Lydersen, Christian Kovacs, Kit M. Lowther, Andrew Hoffman, Joseph I. |
author_facet |
Paijmans, A. J. Stoffel, Martin A. Bester, Marthan N. Cleary, Alison C. Nico De Bruyn, P J Forcada, Jaume Goebel, Michael E. Goldsworthy, Simon D. Guinet, Christophe Lydersen, Christian Kovacs, Kit M. Lowther, Andrew Hoffman, Joseph I. |
author_sort |
Paijmans, A. J. |
title |
The genetic legacy of extreme exploitation in a polar vertebrate |
title_short |
The genetic legacy of extreme exploitation in a polar vertebrate |
title_full |
The genetic legacy of extreme exploitation in a polar vertebrate |
title_fullStr |
The genetic legacy of extreme exploitation in a polar vertebrate |
title_full_unstemmed |
The genetic legacy of extreme exploitation in a polar vertebrate |
title_sort |
genetic legacy of extreme exploitation in a polar vertebrate |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.archives-ouvertes.fr/hal-03019550 https://doi.org/10.1038/s41598-020-61560-8 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctica Arctocephalus gazella |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctica Arctocephalus gazella |
op_source |
ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.archives-ouvertes.fr/hal-03019550 Scientific Reports, Nature Publishing Group, 2020, 10 (1), pp.5089. ⟨10.1038/s41598-020-61560-8⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-020-61560-8 hal-03019550 https://hal.archives-ouvertes.fr/hal-03019550 doi:10.1038/s41598-020-61560-8 |
op_doi |
https://doi.org/10.1038/s41598-020-61560-8 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766264889708380160 |