Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour
The arctic skua (Stercorarius parasiticus) is a classic example of an avian plumage polymorphism, with variation in melanin-based ventral plumage coloration defining pale, intermediate and dark morphs in adults of both sexes. However, despite several decades of field research, there is an incomplete...
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ftdryad:oai:v1.datadryad.org:10255/dryad.50700 2023-05-15T14:25:52+02:00 Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour Mundy, Nicholas I. Janssen, Kirstin Colville River Alaska Aaland Finland Slettnes Norway Bear Island Svalbard Spitzbergen Sennaland Zackenberg Greenland Bylot Island Canada Holocene 2013-06-21T15:52:48Z http://hdl.handle.net/10255/dryad.50700 https://doi.org/10.5061/dryad.tf8rn unknown doi:10.5061/dryad.tf8rn/1 doi:10.5061/dryad.tf8rn/2 doi:10.1111/mec.12428 PMID:23980902 doi:10.5061/dryad.tf8rn Janssen K, Mundy NI (2013) Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour. Molecular Ecology 22(18): 4634-4643. http://hdl.handle.net/10255/dryad.50700 Birds Adaptation Population Genetics - Empirical Ecological Genetics Article 2013 ftdryad https://doi.org/10.5061/dryad.tf8rn https://doi.org/10.5061/dryad.tf8rn/1 https://doi.org/10.5061/dryad.tf8rn/2 https://doi.org/10.1111/mec.12428 2020-01-01T15:02:08Z The arctic skua (Stercorarius parasiticus) is a classic example of an avian plumage polymorphism, with variation in melanin-based ventral plumage coloration defining pale, intermediate and dark morphs in adults of both sexes. However, despite several decades of field research, there is an incomplete understanding of how the polymorphism in ventral plumage colour is maintained and the selective forces involved. Here we investigate selection on a locus (MC1R) that is strongly associated with plumage colour variation in arctic skuas using patterns of nucleotide variation and comparison to neutral loci (nuclear introns and mtDNA). We find that three linked non-synonymous mutations in MC1R, including the single mutation described previously, are associated with plumage colour in the arctic skua. The position of non-synonymous mutations on a MC1R haplotype network implies that divergent selection drove the initial evolution of the colour morphs. Comparisons of FSTs of MC1R vs. nuclear introns among five skua populations differing in proportion of dark morphs along an approximate north-south cline reveals a signature of divergent selection on MC1R. In contrast, we find limited evidence for balancing selection on MC1R within populations, although the power is low. Our results provide strong evidence for both past and ongoing selection on MC1R, and, by implication, plumage colour in arctic skuas. The results suggest that a fruitful avenue for future ecological studies will be analysis of selection on morphs in colonies at the extremes along the morph ratio cline. Article in Journal/Newspaper Arctic Arctic Arctic skua Bear Island Bylot Island Greenland Spitzbergen Stercorarius parasiticus Svalbard Zackenberg Alaska Dryad Digital Repository (Duke University) Arctic Bear Island ENVELOPE(-67.250,-67.250,-68.151,-68.151) Bylot Island Canada Greenland Norway Svalbard |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Birds Adaptation Population Genetics - Empirical Ecological Genetics |
spellingShingle |
Birds Adaptation Population Genetics - Empirical Ecological Genetics Mundy, Nicholas I. Janssen, Kirstin Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour |
topic_facet |
Birds Adaptation Population Genetics - Empirical Ecological Genetics |
description |
The arctic skua (Stercorarius parasiticus) is a classic example of an avian plumage polymorphism, with variation in melanin-based ventral plumage coloration defining pale, intermediate and dark morphs in adults of both sexes. However, despite several decades of field research, there is an incomplete understanding of how the polymorphism in ventral plumage colour is maintained and the selective forces involved. Here we investigate selection on a locus (MC1R) that is strongly associated with plumage colour variation in arctic skuas using patterns of nucleotide variation and comparison to neutral loci (nuclear introns and mtDNA). We find that three linked non-synonymous mutations in MC1R, including the single mutation described previously, are associated with plumage colour in the arctic skua. The position of non-synonymous mutations on a MC1R haplotype network implies that divergent selection drove the initial evolution of the colour morphs. Comparisons of FSTs of MC1R vs. nuclear introns among five skua populations differing in proportion of dark morphs along an approximate north-south cline reveals a signature of divergent selection on MC1R. In contrast, we find limited evidence for balancing selection on MC1R within populations, although the power is low. Our results provide strong evidence for both past and ongoing selection on MC1R, and, by implication, plumage colour in arctic skuas. The results suggest that a fruitful avenue for future ecological studies will be analysis of selection on morphs in colonies at the extremes along the morph ratio cline. |
format |
Article in Journal/Newspaper |
author |
Mundy, Nicholas I. Janssen, Kirstin |
author_facet |
Mundy, Nicholas I. Janssen, Kirstin |
author_sort |
Mundy, Nicholas I. |
title |
Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour |
title_short |
Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour |
title_full |
Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour |
title_fullStr |
Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour |
title_full_unstemmed |
Data from: Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour |
title_sort |
data from: molecular population genetics of the melanic plumage polymorphism in arctic skuas (stercorarius parasiticus): evidence for divergent selection on plumage colour |
publishDate |
2013 |
url |
http://hdl.handle.net/10255/dryad.50700 https://doi.org/10.5061/dryad.tf8rn |
op_coverage |
Colville River Alaska Aaland Finland Slettnes Norway Bear Island Svalbard Spitzbergen Sennaland Zackenberg Greenland Bylot Island Canada Holocene |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) |
geographic |
Arctic Bear Island Bylot Island Canada Greenland Norway Svalbard |
geographic_facet |
Arctic Bear Island Bylot Island Canada Greenland Norway Svalbard |
genre |
Arctic Arctic Arctic skua Bear Island Bylot Island Greenland Spitzbergen Stercorarius parasiticus Svalbard Zackenberg Alaska |
genre_facet |
Arctic Arctic Arctic skua Bear Island Bylot Island Greenland Spitzbergen Stercorarius parasiticus Svalbard Zackenberg Alaska |
op_relation |
doi:10.5061/dryad.tf8rn/1 doi:10.5061/dryad.tf8rn/2 doi:10.1111/mec.12428 PMID:23980902 doi:10.5061/dryad.tf8rn Janssen K, Mundy NI (2013) Molecular population genetics of the melanic plumage polymorphism in arctic skuas (Stercorarius parasiticus): evidence for divergent selection on plumage colour. Molecular Ecology 22(18): 4634-4643. http://hdl.handle.net/10255/dryad.50700 |
op_doi |
https://doi.org/10.5061/dryad.tf8rn https://doi.org/10.5061/dryad.tf8rn/1 https://doi.org/10.5061/dryad.tf8rn/2 https://doi.org/10.1111/mec.12428 |
_version_ |
1766298346696212480 |