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, Bauer E, Paijmans A, Humble E, Beckmann LM, Kubetschek C, Christaller F, Kröcker N, Fuchs B, Moreras A, Shihlomule YD, et al. (2018)
Royal Society Open Science 5(10): 181227.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
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 Bouvetoya. 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.
Stichworte
colour polymorphism; melanocortin 1 receptor gene; population structure; fur seal; pinniped
Erscheinungsjahr
2018
Zeitschriftentitel
Royal Society Open Science
Band
5
Ausgabe
10
Art.-Nr.
181227
eISSN
2054-5703
Finanzierungs-Informationen
Article Processing Charge funded by the Deutsche Forschungsgemeinschaft and the Open Access Publication Fund of Bielefeld University.
Page URI
https://pub.uni-bielefeld.de/record/2933566

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Hoffman J, Bauer E, Paijmans A, et al. A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal. Royal Society Open Science. 2018;5(10): 181227.
Hoffman, J., Bauer, E., Paijmans, A., Humble, E., Beckmann, L. M., Kubetschek, C., Christaller, F., et al. (2018). A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal. Royal Society Open Science, 5(10), 181227. doi:10.1098/rsos.181227
Hoffman, J., Bauer, E., Paijmans, A., Humble, E., Beckmann, L. M., Kubetschek, C., Christaller, F., Kröcker, N., Fuchs, B., Moreras, A., et al. (2018). A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal. Royal Society Open Science 5:181227.
Hoffman, J., et al., 2018. A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal. Royal Society Open Science, 5(10): 181227.
J. Hoffman, et al., “A global cline in a colour polymorphism suggests a limited contribution of gene flow towards the recovery of a heavily exploited marine mammal”, Royal Society Open Science, vol. 5, 2018, : 181227.
Hoffman, J., Bauer, E., Paijmans, A., 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. Royal Society Open Science. 5, : 181227 (2018).
Hoffman, Joseph, Bauer, E., Paijmans, Anneke, Humble, Emily, Beckmann, L. M., Kubetschek, C., Christaller, F., Kröcker, N., Fuchs, Barbara, 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., and 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”. Royal Society Open Science 5.10 (2018): 181227.
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