A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal.
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 (...
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Online Access: | http://dro.dur.ac.uk/26923/ http://dro.dur.ac.uk/26923/1/26923.pdf https://doi.org/10.1098/rsos.181227 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:26923 2023-05-15T13:48:01+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, J. I. Bauer, E. Paijmans, A. J. Humble, E. Beckmann, L. M. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. D. Bester, M. N. Cleary, A. C. De Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, C. Hoelzel, A. R. Lydersen, C. Kovacs, K. M. Lowther, A. 2018-10-01 application/pdf http://dro.dur.ac.uk/26923/ http://dro.dur.ac.uk/26923/1/26923.pdf https://doi.org/10.1098/rsos.181227 unknown Royal Society dro:26923 issn:2054-5703 doi:10.1098/rsos.181227 http://dro.dur.ac.uk/26923/ https://doi.org/10.1098/rsos.181227 http://dro.dur.ac.uk/26923/1/26923.pdf © 2018 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. CC-BY Royal Society open science, 2018, Vol.5(10), pp.181227 [Peer Reviewed Journal] Article PeerReviewed 2018 ftunivdurham https://doi.org/10.1098/rsos.181227 2020-06-04T22:25:13Z 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 Durham University: Durham Research Online Antarctic Bouvetøya ENVELOPE(3.358,3.358,-54.422,-54.422) Indian South Shetland Islands The Antarctic Royal Society Open Science 5 10 181227 |
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Open Polar |
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Durham University: Durham Research Online |
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ftunivdurham |
language |
unknown |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Hoffman, J. I. Bauer, E. Paijmans, A. J. Humble, E. Beckmann, L. M. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. D. Bester, M. N. Cleary, A. C. De Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, C. Hoelzel, A. R. Lydersen, C. Kovacs, K. M. Lowther, A. |
spellingShingle |
Hoffman, J. I. Bauer, E. Paijmans, A. J. Humble, E. Beckmann, L. M. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. D. Bester, M. N. Cleary, A. C. De Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, C. 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. |
author_facet |
Hoffman, J. I. Bauer, E. Paijmans, A. J. Humble, E. Beckmann, L. M. Kubetschek, C. Christaller, F. Kröcker, N. Fuchs, B. Moreras, A. Shihlomule, Y. D. Bester, M. N. Cleary, A. C. De Bruyn, P. J. N. Forcada, J. Goebel, M. E. Goldsworthy, S. D. Guinet, C. Hoelzel, A. R. Lydersen, C. Kovacs, K. M. Lowther, A. |
author_sort |
Hoffman, J. I. |
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 |
Royal Society |
publishDate |
2018 |
url |
http://dro.dur.ac.uk/26923/ http://dro.dur.ac.uk/26923/1/26923.pdf 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 |
Royal Society open science, 2018, Vol.5(10), pp.181227 [Peer Reviewed Journal] |
op_relation |
dro:26923 issn:2054-5703 doi:10.1098/rsos.181227 http://dro.dur.ac.uk/26923/ https://doi.org/10.1098/rsos.181227 http://dro.dur.ac.uk/26923/1/26923.pdf |
op_rights |
© 2018 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
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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