The genetic legacy of extreme exploitation in a polar vertebrate
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 de...
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ftpubmed:oai:pubmedcentral.nih.gov:7083876 2023-05-15T13:51:05+02:00 The genetic legacy of extreme exploitation in a polar vertebrate Paijmans, Anneke J. Stoffel, Martin A. Bester, Marthán N. Cleary, Alison C. De Bruyn, P. J. Nico Forcada, Jaume Goebel, Michael E. Goldsworthy, Simon D. Guinet, Christophe Lydersen, Christian Kovacs, Kit M. Lowther, Andrew Hoffman, Joseph I. 2020-03-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7083876/ http://www.ncbi.nlm.nih.gov/pubmed/32198403 https://doi.org/10.1038/s41598-020-61560-8 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7083876/ http://www.ncbi.nlm.nih.gov/pubmed/32198403 http://dx.doi.org/10.1038/s41598-020-61560-8 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-61560-8 2020-03-29T01:36:47Z 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 18(th) and 19(th) 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. Text Antarc* Antarctic Antarctic Fur Seal Antarctica Arctocephalus gazella PubMed Central (PMC) Antarctic The Antarctic Scientific Reports 10 1 |
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Article Paijmans, Anneke J. Stoffel, Martin A. Bester, Marthán N. Cleary, Alison C. De Bruyn, P. J. Nico 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 |
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description |
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 18(th) and 19(th) 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. |
format |
Text |
author |
Paijmans, Anneke J. Stoffel, Martin A. Bester, Marthán N. Cleary, Alison C. De Bruyn, P. J. Nico Forcada, Jaume Goebel, Michael E. Goldsworthy, Simon D. Guinet, Christophe Lydersen, Christian Kovacs, Kit M. Lowther, Andrew Hoffman, Joseph I. |
author_facet |
Paijmans, Anneke J. Stoffel, Martin A. Bester, Marthán N. Cleary, Alison C. De Bruyn, P. J. Nico Forcada, Jaume Goebel, Michael E. Goldsworthy, Simon D. Guinet, Christophe Lydersen, Christian Kovacs, Kit M. Lowther, Andrew Hoffman, Joseph I. |
author_sort |
Paijmans, Anneke 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 |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7083876/ http://www.ncbi.nlm.nih.gov/pubmed/32198403 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_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7083876/ http://www.ncbi.nlm.nih.gov/pubmed/32198403 http://dx.doi.org/10.1038/s41598-020-61560-8 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-61560-8 |
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Scientific Reports |
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10 |
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1 |
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