A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal
International audience Evaluating how populations are connected by migration is important for understanding species resilience because gene flow can facilitate recovery from demographic declines. We therefore investigated the extent to which migration may have contributed to the global recovery of t...
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Online Access: | https://hal.science/hal-02263605 https://doi.org/10.1098/rsos.181227 |
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ftunivnantes:oai:HAL:hal-02263605v1 2023-05-15T13:31:11+02:00 A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal Hoffman, Jakobus Bauer, E. Paijmans, J. Humble, E. Beckmann, L. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. Bester, N. Cleary, A. de Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, Christophe Hoelzel, A. R. Lydersen, C. Kovacs, K. M. Lowther, A. Department of Animal Behaviour Universität Bielefeld Department of Zoology and Entomology Pretoria University of Pretoria South Africa Norwegian Polar Institute British Antarctic Survey NERC UK Antarctic Ecosystem Research Division National Oceanic and Atmospheric Administration (NOAA)-National Marine Fisheries Service South Australian Research and Development Institute Australia Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Durham University 2018-10-24 https://hal.science/hal-02263605 https://doi.org/10.1098/rsos.181227 en eng HAL CCSD The Royal Society info:eu-repo/semantics/altIdentifier/doi/10.1098/rsos.181227 hal-02263605 https://hal.science/hal-02263605 doi:10.1098/rsos.181227 PUBMEDCENTRAL: PMC6227926 ISSN: 2054-5703 Royal Society Open Science https://hal.science/hal-02263605 Royal Society Open Science, 2018, 5 (10), pp.181227. ⟨10.1098/rsos.181227⟩ colour polymorphism population structure melanocortin 1 receptor gene fur seal pinniped [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2018 ftunivnantes https://doi.org/10.1098/rsos.181227 2023-03-08T05:16:49Z International audience Evaluating how populations are connected by migration is important for understanding species resilience because gene flow can facilitate recovery from demographic declines. We therefore investigated the extent to which migration may have contributed to the global recovery of the Antarctic fur seal (Arctocephalus gazella), a circumpolar distributed marine mammal that was brought to the brink of extinction by the sealing industry in the eighteenth and nineteenth centuries. It is widely believed that animals emigrating from South Georgia, where a relict population escaped sealing, contributed to the re-establishment of formerly occupied breeding colonies across the geographical range of the species. To investigate this, we interrogated a genetic polymorphism (S291F) in the melanocortin 1 receptor gene, which is responsible for a cream-coloured phenotype that is relatively abundant at South Georgia and which appears to have recently spread to localities as far afield as Marion Island in the sub-Antarctic Indian Ocean. By sequencing a short region of this gene in 1492 pups from eight breeding colonies, we showed that S291F frequency rapidly declines with increasing geographical distance from South Georgia, consistent with locally restricted gene flow from South Georgia mainly to the South Shetland Islands and Bouvetøya. The S291F allele was not detected farther afield, suggesting that although emigrants from South Georgia may have been locally important, they are unlikely to have played a major role in the recovery of geographically more distant populations. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella Bouvetøya Marion Island South Shetland Islands Université de Nantes: HAL-UNIV-NANTES Antarctic Bouvetøya ENVELOPE(3.358,3.358,-54.422,-54.422) Indian South Shetland Islands The Antarctic Royal Society Open Science 5 10 181227 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
colour polymorphism population structure melanocortin 1 receptor gene fur seal pinniped [SDE]Environmental Sciences |
spellingShingle |
colour polymorphism population structure melanocortin 1 receptor gene fur seal pinniped [SDE]Environmental Sciences Hoffman, Jakobus Bauer, E. Paijmans, J. Humble, E. Beckmann, L. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. Bester, N. Cleary, A. de Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, Christophe Hoelzel, A. R. Lydersen, C. Kovacs, K. M. Lowther, A. A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal |
topic_facet |
colour polymorphism population structure melanocortin 1 receptor gene fur seal pinniped [SDE]Environmental Sciences |
description |
International audience Evaluating how populations are connected by migration is important for understanding species resilience because gene flow can facilitate recovery from demographic declines. We therefore investigated the extent to which migration may have contributed to the global recovery of the Antarctic fur seal (Arctocephalus gazella), a circumpolar distributed marine mammal that was brought to the brink of extinction by the sealing industry in the eighteenth and nineteenth centuries. It is widely believed that animals emigrating from South Georgia, where a relict population escaped sealing, contributed to the re-establishment of formerly occupied breeding colonies across the geographical range of the species. To investigate this, we interrogated a genetic polymorphism (S291F) in the melanocortin 1 receptor gene, which is responsible for a cream-coloured phenotype that is relatively abundant at South Georgia and which appears to have recently spread to localities as far afield as Marion Island in the sub-Antarctic Indian Ocean. By sequencing a short region of this gene in 1492 pups from eight breeding colonies, we showed that S291F frequency rapidly declines with increasing geographical distance from South Georgia, consistent with locally restricted gene flow from South Georgia mainly to the South Shetland Islands and Bouvetøya. The S291F allele was not detected farther afield, suggesting that although emigrants from South Georgia may have been locally important, they are unlikely to have played a major role in the recovery of geographically more distant populations. |
author2 |
Department of Animal Behaviour Universität Bielefeld Department of Zoology and Entomology Pretoria University of Pretoria South Africa Norwegian Polar Institute British Antarctic Survey NERC UK Antarctic Ecosystem Research Division National Oceanic and Atmospheric Administration (NOAA)-National Marine Fisheries Service South Australian Research and Development Institute Australia Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Durham University |
format |
Article in Journal/Newspaper |
author |
Hoffman, Jakobus Bauer, E. Paijmans, J. Humble, E. Beckmann, L. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. Bester, N. Cleary, A. de Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, Christophe Hoelzel, A. R. Lydersen, C. Kovacs, K. M. Lowther, A. |
author_facet |
Hoffman, Jakobus Bauer, E. Paijmans, J. Humble, E. Beckmann, L. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. Bester, N. Cleary, A. de Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, Christophe Hoelzel, A. R. Lydersen, C. Kovacs, K. M. Lowther, A. |
author_sort |
Hoffman, Jakobus |
title |
A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal |
title_short |
A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal |
title_full |
A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal |
title_fullStr |
A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal |
title_full_unstemmed |
A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal |
title_sort |
global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02263605 https://doi.org/10.1098/rsos.181227 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) |
geographic |
Antarctic Bouvetøya Indian South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Bouvetøya Indian South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella Bouvetøya Marion Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella Bouvetøya Marion Island South Shetland Islands |
op_source |
ISSN: 2054-5703 Royal Society Open Science https://hal.science/hal-02263605 Royal Society Open Science, 2018, 5 (10), pp.181227. ⟨10.1098/rsos.181227⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsos.181227 hal-02263605 https://hal.science/hal-02263605 doi:10.1098/rsos.181227 PUBMEDCENTRAL: PMC6227926 |
op_doi |
https://doi.org/10.1098/rsos.181227 |
container_title |
Royal Society Open Science |
container_volume |
5 |
container_issue |
10 |
container_start_page |
181227 |
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1766016538197884928 |