Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird
Investigating the extent (or the existence) of local adaptation is crucial to understanding how populations adapt. When experiments or fitness measurements are difficult or impossible to perform in natural populations, genomic techniques allow us to investigate local adaptation through the compariso...
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ftpubmed:oai:pubmedcentral.nih.gov:5383466 2023-05-15T14:54:49+02:00 Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird Tigano, Anna Shultz, Allison J. Edwards, Scott V. Robertson, Gregory J. Friesen, Vicki L. 2017-03-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5383466/ https://doi.org/10.1002/ece3.2819 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5383466/ http://dx.doi.org/10.1002/ece3.2819 © 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Original Research Text 2017 ftpubmed https://doi.org/10.1002/ece3.2819 2017-04-16T00:12:18Z Investigating the extent (or the existence) of local adaptation is crucial to understanding how populations adapt. When experiments or fitness measurements are difficult or impossible to perform in natural populations, genomic techniques allow us to investigate local adaptation through the comparison of allele frequencies and outlier loci along environmental clines. The thick‐billed murre (Uria lomvia) is a highly philopatric colonial arctic seabird that occupies a significant environmental gradient, shows marked phenotypic differences among colonies, and has large effective population sizes. To test whether thick‐billed murres from five colonies along the eastern Canadian Arctic coast show genomic signatures of local adaptation to their breeding grounds, we analyzed geographic variation in genome‐wide markers mapped to a newly assembled thick‐billed murre reference genome. We used outlier analyses to detect loci putatively under selection, and clustering analyses to investigate patterns of differentiation based on 2220 genomewide single nucleotide polymorphisms (SNPs) and 137 outlier SNPs. We found no evidence of population structure among colonies using all loci but found population structure based on outliers only, where birds from the two northernmost colonies (Minarets and Prince Leopold) grouped with birds from the southernmost colony (Gannet), and birds from Coats and Akpatok were distinct from all other colonies. Although results from our analyses did not support local adaptation along the latitudinal cline of breeding colonies, outlier loci grouped birds from different colonies according to their non‐breeding distributions, suggesting that outliers may be informative about adaptation and/or demographic connectivity associated with their migration patterns or nonbreeding grounds. Text Arctic thick-billed murre Uria lomvia uria PubMed Central (PMC) Arctic Ecology and Evolution 7 7 2370 2381 |
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Original Research Tigano, Anna Shultz, Allison J. Edwards, Scott V. Robertson, Gregory J. Friesen, Vicki L. Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird |
topic_facet |
Original Research |
description |
Investigating the extent (or the existence) of local adaptation is crucial to understanding how populations adapt. When experiments or fitness measurements are difficult or impossible to perform in natural populations, genomic techniques allow us to investigate local adaptation through the comparison of allele frequencies and outlier loci along environmental clines. The thick‐billed murre (Uria lomvia) is a highly philopatric colonial arctic seabird that occupies a significant environmental gradient, shows marked phenotypic differences among colonies, and has large effective population sizes. To test whether thick‐billed murres from five colonies along the eastern Canadian Arctic coast show genomic signatures of local adaptation to their breeding grounds, we analyzed geographic variation in genome‐wide markers mapped to a newly assembled thick‐billed murre reference genome. We used outlier analyses to detect loci putatively under selection, and clustering analyses to investigate patterns of differentiation based on 2220 genomewide single nucleotide polymorphisms (SNPs) and 137 outlier SNPs. We found no evidence of population structure among colonies using all loci but found population structure based on outliers only, where birds from the two northernmost colonies (Minarets and Prince Leopold) grouped with birds from the southernmost colony (Gannet), and birds from Coats and Akpatok were distinct from all other colonies. Although results from our analyses did not support local adaptation along the latitudinal cline of breeding colonies, outlier loci grouped birds from different colonies according to their non‐breeding distributions, suggesting that outliers may be informative about adaptation and/or demographic connectivity associated with their migration patterns or nonbreeding grounds. |
format |
Text |
author |
Tigano, Anna Shultz, Allison J. Edwards, Scott V. Robertson, Gregory J. Friesen, Vicki L. |
author_facet |
Tigano, Anna Shultz, Allison J. Edwards, Scott V. Robertson, Gregory J. Friesen, Vicki L. |
author_sort |
Tigano, Anna |
title |
Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird |
title_short |
Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird |
title_full |
Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird |
title_fullStr |
Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird |
title_full_unstemmed |
Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird |
title_sort |
outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird |
publisher |
John Wiley and Sons Inc. |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5383466/ https://doi.org/10.1002/ece3.2819 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic thick-billed murre Uria lomvia uria |
genre_facet |
Arctic thick-billed murre Uria lomvia uria |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5383466/ http://dx.doi.org/10.1002/ece3.2819 |
op_rights |
© 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
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CC-BY |
op_doi |
https://doi.org/10.1002/ece3.2819 |
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Ecology and Evolution |
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7 |
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7 |
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2370 |
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