Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius)
Coloration is evolutionarily labile and so provides an excellent trait for examining the repeatability of evolution. Here, we investigate the repeatability of the evolution of polymorphic variation in ventral plumage coloration in skuas (Stercorarius: Stercorariidae). In 2 species, arctic (S. parasi...
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ftpubmed:oai:pubmedcentral.nih.gov:8634071 2023-05-15T15:05:32+02:00 Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius) Janssen, Kirstin Bustnes, Jan Ove Mundy, Nicholas I 2021-08-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8634071/ http://www.ncbi.nlm.nih.gov/pubmed/34343335 https://doi.org/10.1093/jhered/esab038 en eng Oxford University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8634071/ http://www.ncbi.nlm.nih.gov/pubmed/34343335 http://dx.doi.org/10.1093/jhered/esab038 © The American Genetic Association. 2021. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY J Hered Special Issue Article Text 2021 ftpubmed https://doi.org/10.1093/jhered/esab038 2021-12-05T02:03:32Z Coloration is evolutionarily labile and so provides an excellent trait for examining the repeatability of evolution. Here, we investigate the repeatability of the evolution of polymorphic variation in ventral plumage coloration in skuas (Stercorarius: Stercorariidae). In 2 species, arctic (S. parasiticus) and pomarine skuas (S. pomarinus), plumage polymorphism was previously shown to be associated with coding changes at the melanocortin-1 receptor (MC1R) locus. Here, we show that polymorphism in a third species, the south polar skua (S. maccormicki), is not associated with coding variation at MC1R or with variation at a Z-linked second candidate locus, tyrosinase-related protein 1 (TYRP1). Hence, convergent evolution of plumage polymorphisms in skuas is only partly repeatable at the level of the genetic locus involved. Interestingly, the pattern of repeatability in skuas is aligned not with phylogeny but with the nature of the phenotypic variation. In particular, south polar skuas show a strong sex bias to coloration that is absent in the other species, and it may be that this has a unique genetic architecture. Text Arctic South Polar Skuas PubMed Central (PMC) Arctic Journal of Heredity 112 5 430 435 |
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Special Issue Article Janssen, Kirstin Bustnes, Jan Ove Mundy, Nicholas I Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius) |
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Special Issue Article |
description |
Coloration is evolutionarily labile and so provides an excellent trait for examining the repeatability of evolution. Here, we investigate the repeatability of the evolution of polymorphic variation in ventral plumage coloration in skuas (Stercorarius: Stercorariidae). In 2 species, arctic (S. parasiticus) and pomarine skuas (S. pomarinus), plumage polymorphism was previously shown to be associated with coding changes at the melanocortin-1 receptor (MC1R) locus. Here, we show that polymorphism in a third species, the south polar skua (S. maccormicki), is not associated with coding variation at MC1R or with variation at a Z-linked second candidate locus, tyrosinase-related protein 1 (TYRP1). Hence, convergent evolution of plumage polymorphisms in skuas is only partly repeatable at the level of the genetic locus involved. Interestingly, the pattern of repeatability in skuas is aligned not with phylogeny but with the nature of the phenotypic variation. In particular, south polar skuas show a strong sex bias to coloration that is absent in the other species, and it may be that this has a unique genetic architecture. |
format |
Text |
author |
Janssen, Kirstin Bustnes, Jan Ove Mundy, Nicholas I |
author_facet |
Janssen, Kirstin Bustnes, Jan Ove Mundy, Nicholas I |
author_sort |
Janssen, Kirstin |
title |
Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius) |
title_short |
Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius) |
title_full |
Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius) |
title_fullStr |
Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius) |
title_full_unstemmed |
Variation in Genetic Mechanisms for Plumage Polymorphism in Skuas (Stercorarius) |
title_sort |
variation in genetic mechanisms for plumage polymorphism in skuas (stercorarius) |
publisher |
Oxford University Press |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8634071/ http://www.ncbi.nlm.nih.gov/pubmed/34343335 https://doi.org/10.1093/jhered/esab038 |
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Arctic |
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Arctic |
genre |
Arctic South Polar Skuas |
genre_facet |
Arctic South Polar Skuas |
op_source |
J Hered |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8634071/ http://www.ncbi.nlm.nih.gov/pubmed/34343335 http://dx.doi.org/10.1093/jhered/esab038 |
op_rights |
© The American Genetic Association. 2021. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
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CC-BY |
op_doi |
https://doi.org/10.1093/jhered/esab038 |
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Journal of Heredity |
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112 |
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5 |
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430 |
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435 |
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1766337223274266624 |