Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar)
Abstract Chromosomal rearrangements (e.g., inversions, fusions, and translocations) have long been associated with environmental variation in wild populations. New genomic tools provide the opportunity to examine the role of these structural variants in shaping adaptive differences within and among...
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Online Access: | http://dx.doi.org/10.1111/mec.16307 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16307 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16307 |
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crwiley:10.1111/mec.16307 2024-10-06T13:47:17+00:00 Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar) Watson, K. Beth Lehnert, Sarah J. Bentzen, Paul Kess, Tony Einfeldt, Antony Duffy, Steven Perriman, Ben Lien, Sigbjørn Kent, Matthew Bradbury, Ian R. Natural Sciences and Engineering Research Council of Canada 2021 http://dx.doi.org/10.1111/mec.16307 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16307 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16307 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Molecular Ecology volume 31, issue 4, page 1057-1075 ISSN 0962-1083 1365-294X journal-article 2021 crwiley https://doi.org/10.1111/mec.16307 2024-09-11T04:16:09Z Abstract Chromosomal rearrangements (e.g., inversions, fusions, and translocations) have long been associated with environmental variation in wild populations. New genomic tools provide the opportunity to examine the role of these structural variants in shaping adaptive differences within and among wild populations of non‐model organisms. In Atlantic Salmon ( Salmo salar ), variations in chromosomal rearrangements exist across the species natural range, yet the role and importance of these structural variants in maintaining adaptive differences among wild populations remains poorly understood. We genotyped Atlantic Salmon ( n = 1429) from 26 populations within a highly genetically structured region of southern Newfoundland, Canada with a 220K SNP array. Multivariate analysis, across two independent years, consistently identified variation in a structural variant (translocation between chromosomes Ssa01 and Ssa23), previously associated with evidence of trans‐Atlantic secondary contact, as the dominant factor influencing population structure in the region. Redundancy analysis suggested that variation in the Ssa01/Ssa23 chromosomal translocation is strongly correlated with temperature. Our analyses suggest environmentally mediated selection acting on standing genetic variation in genomic architecture introduced through secondary contact may underpin fine‐scale local adaptation in Placentia Bay, Newfoundland, Canada, a large and deep embayment, highlighting the importance of chromosomal structural variation as a driver of contemporary adaptive divergence. Article in Journal/Newspaper Atlantic salmon Newfoundland Salmo salar Wiley Online Library Canada Molecular Ecology 31 4 1057 1075 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Chromosomal rearrangements (e.g., inversions, fusions, and translocations) have long been associated with environmental variation in wild populations. New genomic tools provide the opportunity to examine the role of these structural variants in shaping adaptive differences within and among wild populations of non‐model organisms. In Atlantic Salmon ( Salmo salar ), variations in chromosomal rearrangements exist across the species natural range, yet the role and importance of these structural variants in maintaining adaptive differences among wild populations remains poorly understood. We genotyped Atlantic Salmon ( n = 1429) from 26 populations within a highly genetically structured region of southern Newfoundland, Canada with a 220K SNP array. Multivariate analysis, across two independent years, consistently identified variation in a structural variant (translocation between chromosomes Ssa01 and Ssa23), previously associated with evidence of trans‐Atlantic secondary contact, as the dominant factor influencing population structure in the region. Redundancy analysis suggested that variation in the Ssa01/Ssa23 chromosomal translocation is strongly correlated with temperature. Our analyses suggest environmentally mediated selection acting on standing genetic variation in genomic architecture introduced through secondary contact may underpin fine‐scale local adaptation in Placentia Bay, Newfoundland, Canada, a large and deep embayment, highlighting the importance of chromosomal structural variation as a driver of contemporary adaptive divergence. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Watson, K. Beth Lehnert, Sarah J. Bentzen, Paul Kess, Tony Einfeldt, Antony Duffy, Steven Perriman, Ben Lien, Sigbjørn Kent, Matthew Bradbury, Ian R. |
spellingShingle |
Watson, K. Beth Lehnert, Sarah J. Bentzen, Paul Kess, Tony Einfeldt, Antony Duffy, Steven Perriman, Ben Lien, Sigbjørn Kent, Matthew Bradbury, Ian R. Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar) |
author_facet |
Watson, K. Beth Lehnert, Sarah J. Bentzen, Paul Kess, Tony Einfeldt, Antony Duffy, Steven Perriman, Ben Lien, Sigbjørn Kent, Matthew Bradbury, Ian R. |
author_sort |
Watson, K. Beth |
title |
Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar) |
title_short |
Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar) |
title_full |
Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar) |
title_fullStr |
Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar) |
title_full_unstemmed |
Environmentally associated chromosomal structural variation influences fine‐scale population structure of Atlantic Salmon ( Salmo salar) |
title_sort |
environmentally associated chromosomal structural variation influences fine‐scale population structure of atlantic salmon ( salmo salar) |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/mec.16307 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16307 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16307 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Newfoundland Salmo salar |
genre_facet |
Atlantic salmon Newfoundland Salmo salar |
op_source |
Molecular Ecology volume 31, issue 4, page 1057-1075 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mec.16307 |
container_title |
Molecular Ecology |
container_volume |
31 |
container_issue |
4 |
container_start_page |
1057 |
op_container_end_page |
1075 |
_version_ |
1812175517802037248 |