Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon
Pleistocene glaciations drove repeated range contractions and expansions shaping contemporary intraspecific diversity. Atlantic salmon (Salmo salar) in the western and eastern Atlantic diverged >600,000 YBP, with the two lineages isolated in different southern refugia during glacial maxima, drivi...
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ftdryad:oai:v1.datadryad.org:10255/dryad.207197 2023-05-15T15:29:57+02:00 Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon Lehnert, Sarah J. Bentzen, Paul Kess, Tony Lien, Sigbjorn Horne, John B. Clément, Marie Bradbury, Ian R. North Atlantic North America Norway 2019-02-19T19:55:52Z http://hdl.handle.net/10255/dryad.207197 https://doi.org/10.5061/dryad.4m5d5m9 unknown doi:10.5061/dryad.4m5d5m9/1 doi:10.1111/mec.15065 doi:10.5061/dryad.4m5d5m9 Lehnert SJ, Bentzen P, Kess T, Lien S, Horne JB, Clément M, Bradbury IR (2019) Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon. Molecular Ecology. http://hdl.handle.net/10255/dryad.207197 Atlantic salmon chromosome rearrangements secondary contact selection Hybridization Article 2019 ftdryad https://doi.org/10.5061/dryad.4m5d5m9 https://doi.org/10.5061/dryad.4m5d5m9/1 https://doi.org/10.1111/mec.15065 2020-01-01T16:23:39Z Pleistocene glaciations drove repeated range contractions and expansions shaping contemporary intraspecific diversity. Atlantic salmon (Salmo salar) in the western and eastern Atlantic diverged >600,000 YBP, with the two lineages isolated in different southern refugia during glacial maxima, driving trans-Atlantic genomic and karyotypic divergence. Here, we investigate genomic consequences of glacial isolation and trans-Atlantic secondary contact using 108,870 single nucleotide polymorphisms (SNPs) genotyped in 80 North American and European populations. Throughout North America, we identified extensive inter-individual variation and discrete linkage blocks within and between chromosomes with known trans-Atlantic differences in rearrangements: Ssa01/Ssa23 translocation and Ssa08/Ssa29 fusion. Spatial genetic analyses suggest independence of rearrangements, with Ssa01/Ssa23 showing high European introgression (>50%) in northern populations indicative of post-glacial trans-Atlantic secondary contact, contrasting low European ancestry genome-wide (3%). Ssa08/Ssa29 showed greater intra-population diversity suggesting a derived chromosome fusion polymorphism within North America. Evidence of potential selection on both genomic regions suggests that the adaptive role of rearrangements warrants further investigation in Atlantic salmon. Our study highlights how Pleistocene glaciations can influence large-scale intraspecific variation in genomic architecture of northern species. Article in Journal/Newspaper Atlantic salmon North Atlantic Salmo salar Dryad Digital Repository (Duke University) Norway |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Atlantic salmon chromosome rearrangements secondary contact selection Hybridization |
spellingShingle |
Atlantic salmon chromosome rearrangements secondary contact selection Hybridization Lehnert, Sarah J. Bentzen, Paul Kess, Tony Lien, Sigbjorn Horne, John B. Clément, Marie Bradbury, Ian R. Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon |
topic_facet |
Atlantic salmon chromosome rearrangements secondary contact selection Hybridization |
description |
Pleistocene glaciations drove repeated range contractions and expansions shaping contemporary intraspecific diversity. Atlantic salmon (Salmo salar) in the western and eastern Atlantic diverged >600,000 YBP, with the two lineages isolated in different southern refugia during glacial maxima, driving trans-Atlantic genomic and karyotypic divergence. Here, we investigate genomic consequences of glacial isolation and trans-Atlantic secondary contact using 108,870 single nucleotide polymorphisms (SNPs) genotyped in 80 North American and European populations. Throughout North America, we identified extensive inter-individual variation and discrete linkage blocks within and between chromosomes with known trans-Atlantic differences in rearrangements: Ssa01/Ssa23 translocation and Ssa08/Ssa29 fusion. Spatial genetic analyses suggest independence of rearrangements, with Ssa01/Ssa23 showing high European introgression (>50%) in northern populations indicative of post-glacial trans-Atlantic secondary contact, contrasting low European ancestry genome-wide (3%). Ssa08/Ssa29 showed greater intra-population diversity suggesting a derived chromosome fusion polymorphism within North America. Evidence of potential selection on both genomic regions suggests that the adaptive role of rearrangements warrants further investigation in Atlantic salmon. Our study highlights how Pleistocene glaciations can influence large-scale intraspecific variation in genomic architecture of northern species. |
format |
Article in Journal/Newspaper |
author |
Lehnert, Sarah J. Bentzen, Paul Kess, Tony Lien, Sigbjorn Horne, John B. Clément, Marie Bradbury, Ian R. |
author_facet |
Lehnert, Sarah J. Bentzen, Paul Kess, Tony Lien, Sigbjorn Horne, John B. Clément, Marie Bradbury, Ian R. |
author_sort |
Lehnert, Sarah J. |
title |
Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon |
title_short |
Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon |
title_full |
Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon |
title_fullStr |
Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon |
title_full_unstemmed |
Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon |
title_sort |
data from: chromosome polymorphisms track trans‐atlantic divergence and secondary contact in atlantic salmon |
publishDate |
2019 |
url |
http://hdl.handle.net/10255/dryad.207197 https://doi.org/10.5061/dryad.4m5d5m9 |
op_coverage |
North Atlantic North America Norway |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon North Atlantic Salmo salar |
genre_facet |
Atlantic salmon North Atlantic Salmo salar |
op_relation |
doi:10.5061/dryad.4m5d5m9/1 doi:10.1111/mec.15065 doi:10.5061/dryad.4m5d5m9 Lehnert SJ, Bentzen P, Kess T, Lien S, Horne JB, Clément M, Bradbury IR (2019) Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon. Molecular Ecology. http://hdl.handle.net/10255/dryad.207197 |
op_doi |
https://doi.org/10.5061/dryad.4m5d5m9 https://doi.org/10.5061/dryad.4m5d5m9/1 https://doi.org/10.1111/mec.15065 |
_version_ |
1766360397705641984 |