Genomic landscape of geographically structured colour polymorphism in a temperate marine fish
Abstract The study of phenotypic variation patterns among populations is fundamental to elucidate the drivers of evolutionary processes. Empirical evidence that supports ongoing genetic divergence associated with phenotypic variation remains very limited for marine species where larval dispersal is...
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crwiley:10.1111/mec.15805 2024-03-24T09:03:48+00:00 Genomic landscape of geographically structured colour polymorphism in a temperate marine fish Casas, Laura Saenz‐Agudelo, Pablo Villegas‐Ríos, David Irigoien, Xabier Saborido‐Rey, Fran 2021 http://dx.doi.org/10.1111/mec.15805 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.15805 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.15805 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Molecular Ecology volume 30, issue 5, page 1281-1296 ISSN 0962-1083 1365-294X Genetics Ecology, Evolution, Behavior and Systematics journal-article 2021 crwiley https://doi.org/10.1111/mec.15805 2024-02-28T02:18:09Z Abstract The study of phenotypic variation patterns among populations is fundamental to elucidate the drivers of evolutionary processes. Empirical evidence that supports ongoing genetic divergence associated with phenotypic variation remains very limited for marine species where larval dispersal is a common homogenizing force. We present a genome‐wide analysis of a marine fish, Labrus bergylta , comprising 144 samples distributed from Norway to Spain, a large geographical area that harbours a gradient of phenotypic differentiation. We analysed 39,602 biallelic single nucleotide polymorphisms and found a clear latitudinal gradient of genomic differentiation strongly correlated with the variation in phenotypic morph frequencies observed across the North Atlantic. We also detected a strong association between the latitude and the number of loci that appear to be under divergent selection, which increased with differences in coloration but not with overall genetic differentiation. Our results demonstrate that strong reproductive isolation is occurring between sympatric colour morphs of L . bergylta found at the southern areas and provide important new insights into the genomic changes shaping early stages of differentiation that might precede speciation with gene flow. Article in Journal/Newspaper North Atlantic Wiley Online Library Norway Molecular Ecology 30 5 1281 1296 |
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Wiley Online Library |
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English |
topic |
Genetics Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Genetics Ecology, Evolution, Behavior and Systematics Casas, Laura Saenz‐Agudelo, Pablo Villegas‐Ríos, David Irigoien, Xabier Saborido‐Rey, Fran Genomic landscape of geographically structured colour polymorphism in a temperate marine fish |
topic_facet |
Genetics Ecology, Evolution, Behavior and Systematics |
description |
Abstract The study of phenotypic variation patterns among populations is fundamental to elucidate the drivers of evolutionary processes. Empirical evidence that supports ongoing genetic divergence associated with phenotypic variation remains very limited for marine species where larval dispersal is a common homogenizing force. We present a genome‐wide analysis of a marine fish, Labrus bergylta , comprising 144 samples distributed from Norway to Spain, a large geographical area that harbours a gradient of phenotypic differentiation. We analysed 39,602 biallelic single nucleotide polymorphisms and found a clear latitudinal gradient of genomic differentiation strongly correlated with the variation in phenotypic morph frequencies observed across the North Atlantic. We also detected a strong association between the latitude and the number of loci that appear to be under divergent selection, which increased with differences in coloration but not with overall genetic differentiation. Our results demonstrate that strong reproductive isolation is occurring between sympatric colour morphs of L . bergylta found at the southern areas and provide important new insights into the genomic changes shaping early stages of differentiation that might precede speciation with gene flow. |
format |
Article in Journal/Newspaper |
author |
Casas, Laura Saenz‐Agudelo, Pablo Villegas‐Ríos, David Irigoien, Xabier Saborido‐Rey, Fran |
author_facet |
Casas, Laura Saenz‐Agudelo, Pablo Villegas‐Ríos, David Irigoien, Xabier Saborido‐Rey, Fran |
author_sort |
Casas, Laura |
title |
Genomic landscape of geographically structured colour polymorphism in a temperate marine fish |
title_short |
Genomic landscape of geographically structured colour polymorphism in a temperate marine fish |
title_full |
Genomic landscape of geographically structured colour polymorphism in a temperate marine fish |
title_fullStr |
Genomic landscape of geographically structured colour polymorphism in a temperate marine fish |
title_full_unstemmed |
Genomic landscape of geographically structured colour polymorphism in a temperate marine fish |
title_sort |
genomic landscape of geographically structured colour polymorphism in a temperate marine fish |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/mec.15805 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.15805 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.15805 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Molecular Ecology volume 30, issue 5, page 1281-1296 ISSN 0962-1083 1365-294X |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/mec.15805 |
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Molecular Ecology |
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30 |
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5 |
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1281 |
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1296 |
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1794404800457080832 |