Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions
Chromosomal rearrangements such as inversions can play a crucial role in maintaining polymorphism underlying complex traits and contribute to the process of speciation. In Atlantic cod (Gadus morhua), inversions of several megabases have been identified that dominate genomic differentiation between...
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ftpubmed:oai:pubmedcentral.nih.gov:5677996 2023-05-15T15:26:31+02:00 Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions Berg, P R Star, B Pampoulie, C Bradbury, I R Bentzen, P Hutchings, J A Jentoft, S Jakobsen, K S 2017-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5677996/ http://www.ncbi.nlm.nih.gov/pubmed/28930288 https://doi.org/10.1038/hdy.2017.54 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5677996/ http://www.ncbi.nlm.nih.gov/pubmed/28930288 http://dx.doi.org/10.1038/hdy.2017.54 Copyright © 2017 The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Original Article Text 2017 ftpubmed https://doi.org/10.1038/hdy.2017.54 2017-12-03T01:21:20Z Chromosomal rearrangements such as inversions can play a crucial role in maintaining polymorphism underlying complex traits and contribute to the process of speciation. In Atlantic cod (Gadus morhua), inversions of several megabases have been identified that dominate genomic differentiation between migratory and nonmigratory ecotypes in the Northeast Atlantic. Here, we show that the same genomic regions display elevated divergence and contribute to ecotype divergence in the Northwest Atlantic as well. The occurrence of these inversions on both sides of the Atlantic Ocean reveals a common evolutionary origin, predating the >100 000-year-old trans-Atlantic separation of Atlantic cod. The long-term persistence of these inversions indicates that they are maintained by selection, possibly facilitated by coevolution of genes underlying complex traits. Our data suggest that migratory behaviour is derived from more stationary, ancestral ecotypes. Overall, we identify several large genomic regions—each containing hundreds of genes—likely involved in the maintenance of genomic divergence in Atlantic cod on both sides of the Atlantic Ocean. Text atlantic cod Gadus morhua Northeast Atlantic Northwest Atlantic PubMed Central (PMC) Heredity 119 6 418 428 |
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Original Article Berg, P R Star, B Pampoulie, C Bradbury, I R Bentzen, P Hutchings, J A Jentoft, S Jakobsen, K S Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions |
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Original Article |
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Chromosomal rearrangements such as inversions can play a crucial role in maintaining polymorphism underlying complex traits and contribute to the process of speciation. In Atlantic cod (Gadus morhua), inversions of several megabases have been identified that dominate genomic differentiation between migratory and nonmigratory ecotypes in the Northeast Atlantic. Here, we show that the same genomic regions display elevated divergence and contribute to ecotype divergence in the Northwest Atlantic as well. The occurrence of these inversions on both sides of the Atlantic Ocean reveals a common evolutionary origin, predating the >100 000-year-old trans-Atlantic separation of Atlantic cod. The long-term persistence of these inversions indicates that they are maintained by selection, possibly facilitated by coevolution of genes underlying complex traits. Our data suggest that migratory behaviour is derived from more stationary, ancestral ecotypes. Overall, we identify several large genomic regions—each containing hundreds of genes—likely involved in the maintenance of genomic divergence in Atlantic cod on both sides of the Atlantic Ocean. |
format |
Text |
author |
Berg, P R Star, B Pampoulie, C Bradbury, I R Bentzen, P Hutchings, J A Jentoft, S Jakobsen, K S |
author_facet |
Berg, P R Star, B Pampoulie, C Bradbury, I R Bentzen, P Hutchings, J A Jentoft, S Jakobsen, K S |
author_sort |
Berg, P R |
title |
Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions |
title_short |
Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions |
title_full |
Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions |
title_fullStr |
Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions |
title_full_unstemmed |
Trans-oceanic genomic divergence of Atlantic cod ecotypes is associated with large inversions |
title_sort |
trans-oceanic genomic divergence of atlantic cod ecotypes is associated with large inversions |
publisher |
Nature Publishing Group |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5677996/ http://www.ncbi.nlm.nih.gov/pubmed/28930288 https://doi.org/10.1038/hdy.2017.54 |
genre |
atlantic cod Gadus morhua Northeast Atlantic Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Northeast Atlantic Northwest Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5677996/ http://www.ncbi.nlm.nih.gov/pubmed/28930288 http://dx.doi.org/10.1038/hdy.2017.54 |
op_rights |
Copyright © 2017 The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
op_doi |
https://doi.org/10.1038/hdy.2017.54 |
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