Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs
Abstract Across its Holarctic range, Arctic charr ( Salvelinus alpinus ) populations have diverged into distinct trophic specialists across independent replicate lakes. The major aspect of divergence between ecomorphs is in head shape and body shape, which are ecomorphological traits reflecting nich...
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Online Access: | http://dx.doi.org/10.1111/mec.17305 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.17305 |
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crwiley:10.1111/mec.17305 2024-04-21T07:54:40+00:00 Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs Fenton, Sam Jacobs, Arne Bean, Colin W. Adams, Colin E. Elmer, Kathryn R. Scottish Natural Heritage University of Glasgow Leverhulme Trust 2024 http://dx.doi.org/10.1111/mec.17305 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.17305 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Molecular Ecology volume 33, issue 7 ISSN 0962-1083 1365-294X Genetics Ecology, Evolution, Behavior and Systematics journal-article 2024 crwiley https://doi.org/10.1111/mec.17305 2024-03-28T08:29:34Z Abstract Across its Holarctic range, Arctic charr ( Salvelinus alpinus ) populations have diverged into distinct trophic specialists across independent replicate lakes. The major aspect of divergence between ecomorphs is in head shape and body shape, which are ecomorphological traits reflecting niche use. However, whether the genomic underpinnings of these parallel divergences are consistent across replicates was unknown but key for resolving the substrate of parallel evolution. We investigated the genomic basis of head shape and body shape morphology across four benthivore–planktivore ecomorph pairs of Arctic charr in Scotland. Through genome‐wide association analyses, we found genomic regions associated with head shape (89 SNPs) or body shape (180 SNPs) separately and 50 of these SNPs were strongly associated with both body and head shape morphology. For each trait separately, only a small number of SNPs were shared across all ecomorph pairs (3 SNPs for head shape and 10 SNPs for body shape). Signs of selection on the associated genomic regions varied across pairs, consistent with evolutionary demography differing considerably across lakes. Using a comprehensive database of salmonid QTLs newly augmented and mapped to a charr genome, we found several of the head‐ and body‐shape‐associated SNPs were within or near morphology QTLs from other salmonid species, reflecting a shared genetic basis for these phenotypes across species. Overall, our results demonstrate how parallel ecotype divergences can have both population‐specific and deeply shared genomic underpinnings across replicates, influenced by differences in their environments and demographic histories. Article in Journal/Newspaper Arctic charr Salvelinus alpinus Wiley Online Library Molecular Ecology |
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language |
English |
topic |
Genetics Ecology, Evolution, Behavior and Systematics |
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Genetics Ecology, Evolution, Behavior and Systematics Fenton, Sam Jacobs, Arne Bean, Colin W. Adams, Colin E. Elmer, Kathryn R. Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs |
topic_facet |
Genetics Ecology, Evolution, Behavior and Systematics |
description |
Abstract Across its Holarctic range, Arctic charr ( Salvelinus alpinus ) populations have diverged into distinct trophic specialists across independent replicate lakes. The major aspect of divergence between ecomorphs is in head shape and body shape, which are ecomorphological traits reflecting niche use. However, whether the genomic underpinnings of these parallel divergences are consistent across replicates was unknown but key for resolving the substrate of parallel evolution. We investigated the genomic basis of head shape and body shape morphology across four benthivore–planktivore ecomorph pairs of Arctic charr in Scotland. Through genome‐wide association analyses, we found genomic regions associated with head shape (89 SNPs) or body shape (180 SNPs) separately and 50 of these SNPs were strongly associated with both body and head shape morphology. For each trait separately, only a small number of SNPs were shared across all ecomorph pairs (3 SNPs for head shape and 10 SNPs for body shape). Signs of selection on the associated genomic regions varied across pairs, consistent with evolutionary demography differing considerably across lakes. Using a comprehensive database of salmonid QTLs newly augmented and mapped to a charr genome, we found several of the head‐ and body‐shape‐associated SNPs were within or near morphology QTLs from other salmonid species, reflecting a shared genetic basis for these phenotypes across species. Overall, our results demonstrate how parallel ecotype divergences can have both population‐specific and deeply shared genomic underpinnings across replicates, influenced by differences in their environments and demographic histories. |
author2 |
Scottish Natural Heritage University of Glasgow Leverhulme Trust |
format |
Article in Journal/Newspaper |
author |
Fenton, Sam Jacobs, Arne Bean, Colin W. Adams, Colin E. Elmer, Kathryn R. |
author_facet |
Fenton, Sam Jacobs, Arne Bean, Colin W. Adams, Colin E. Elmer, Kathryn R. |
author_sort |
Fenton, Sam |
title |
Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs |
title_short |
Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs |
title_full |
Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs |
title_fullStr |
Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs |
title_full_unstemmed |
Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs |
title_sort |
genomic underpinnings of head and body shape in arctic charr ecomorph pairs |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1111/mec.17305 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.17305 |
genre |
Arctic charr Salvelinus alpinus |
genre_facet |
Arctic charr Salvelinus alpinus |
op_source |
Molecular Ecology volume 33, issue 7 ISSN 0962-1083 1365-294X |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/mec.17305 |
container_title |
Molecular Ecology |
_version_ |
1796937125991546880 |