Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic
The mode and extent of rapid evolution and genomic change in response to human harvesting are key conservation issues. Although experiments and models have shown a high potential for both genetic and phenotypic change in response to fishing, empirical examples of genetic responses in wild population...
Published in: | Proceedings of the National Academy of Sciences |
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Language: | English |
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Online Access: | https://hdl.handle.net/11250/2825029 https://doi.org/10.1073/pnas.2025453118 |
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ftimr:oai:imr.brage.unit.no:11250/2825029 2023-05-15T15:05:14+02:00 Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic Pinsky, Malin L Eikeset, Anne Maria Helmerson, Cecilia Bradbury, Ian R. Bentzen, Paul Morris, Corey Gondek, Agata Baalsrud, Helle Tessand Brieuc, Marine Servane Ono Kjesbu, Olav Sigurd Godiksen, Jane Aanestad Barth, Julia Maria Isis Matschiner, Michael Stenseth, Nils Christian Jakobsen, Kjetill Sigurd Jentoft, Sissel Star, Bastiaan 2021 application/pdf https://hdl.handle.net/11250/2825029 https://doi.org/10.1073/pnas.2025453118 eng eng Norges forskningsråd: 221734/O30 Norges forskningsråd: 203850/E40 Norges forskningsråd: 262777 urn:issn:0027-8424 https://hdl.handle.net/11250/2825029 https://doi.org/10.1073/pnas.2025453118 cristin:1947146 Proceedings of the National Academy of Sciences of the United States of America Peer reviewed Journal article 2021 ftimr https://doi.org/10.1073/pnas.2025453118 2021-10-27T22:36:57Z The mode and extent of rapid evolution and genomic change in response to human harvesting are key conservation issues. Although experiments and models have shown a high potential for both genetic and phenotypic change in response to fishing, empirical examples of genetic responses in wild populations are rare. Here, we compare whole-genome sequence data of Atlantic cod (Gadus morhua) that were collected before (early 20th century) and after (early 21st century) periods of intensive exploitation and rapid decline in the age of maturation from two geographically distinct populations in Newfoundland, Canada, and the northeast Arctic, Norway. Our temporal, genome-wide analyses of 346,290 loci show no substantial loss of genetic diversity and high effective population sizes. Moreover, we do not find distinct signals of strong selective sweeps anywhere in the genome, although we cannot rule out the possibility of highly polygenic evolution. Our observations suggest that phenotypic change in these populations is not constrained by irreversible loss of genomic variation and thus imply that former traits could be reestablished with demographic recovery. publishedVersion Article in Journal/Newspaper Arctic atlantic cod Gadus morhua Newfoundland Institute for Marine Research: Brage IMR Arctic Canada Norway Proceedings of the National Academy of Sciences 118 15 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
The mode and extent of rapid evolution and genomic change in response to human harvesting are key conservation issues. Although experiments and models have shown a high potential for both genetic and phenotypic change in response to fishing, empirical examples of genetic responses in wild populations are rare. Here, we compare whole-genome sequence data of Atlantic cod (Gadus morhua) that were collected before (early 20th century) and after (early 21st century) periods of intensive exploitation and rapid decline in the age of maturation from two geographically distinct populations in Newfoundland, Canada, and the northeast Arctic, Norway. Our temporal, genome-wide analyses of 346,290 loci show no substantial loss of genetic diversity and high effective population sizes. Moreover, we do not find distinct signals of strong selective sweeps anywhere in the genome, although we cannot rule out the possibility of highly polygenic evolution. Our observations suggest that phenotypic change in these populations is not constrained by irreversible loss of genomic variation and thus imply that former traits could be reestablished with demographic recovery. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Pinsky, Malin L Eikeset, Anne Maria Helmerson, Cecilia Bradbury, Ian R. Bentzen, Paul Morris, Corey Gondek, Agata Baalsrud, Helle Tessand Brieuc, Marine Servane Ono Kjesbu, Olav Sigurd Godiksen, Jane Aanestad Barth, Julia Maria Isis Matschiner, Michael Stenseth, Nils Christian Jakobsen, Kjetill Sigurd Jentoft, Sissel Star, Bastiaan |
spellingShingle |
Pinsky, Malin L Eikeset, Anne Maria Helmerson, Cecilia Bradbury, Ian R. Bentzen, Paul Morris, Corey Gondek, Agata Baalsrud, Helle Tessand Brieuc, Marine Servane Ono Kjesbu, Olav Sigurd Godiksen, Jane Aanestad Barth, Julia Maria Isis Matschiner, Michael Stenseth, Nils Christian Jakobsen, Kjetill Sigurd Jentoft, Sissel Star, Bastiaan Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic |
author_facet |
Pinsky, Malin L Eikeset, Anne Maria Helmerson, Cecilia Bradbury, Ian R. Bentzen, Paul Morris, Corey Gondek, Agata Baalsrud, Helle Tessand Brieuc, Marine Servane Ono Kjesbu, Olav Sigurd Godiksen, Jane Aanestad Barth, Julia Maria Isis Matschiner, Michael Stenseth, Nils Christian Jakobsen, Kjetill Sigurd Jentoft, Sissel Star, Bastiaan |
author_sort |
Pinsky, Malin L |
title |
Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic |
title_short |
Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic |
title_full |
Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic |
title_fullStr |
Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic |
title_full_unstemmed |
Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic |
title_sort |
genomic stability through time despite decades of exploitation in cod on both sides of the atlantic |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2825029 https://doi.org/10.1073/pnas.2025453118 |
geographic |
Arctic Canada Norway |
geographic_facet |
Arctic Canada Norway |
genre |
Arctic atlantic cod Gadus morhua Newfoundland |
genre_facet |
Arctic atlantic cod Gadus morhua Newfoundland |
op_source |
Proceedings of the National Academy of Sciences of the United States of America |
op_relation |
Norges forskningsråd: 221734/O30 Norges forskningsråd: 203850/E40 Norges forskningsråd: 262777 urn:issn:0027-8424 https://hdl.handle.net/11250/2825029 https://doi.org/10.1073/pnas.2025453118 cristin:1947146 |
op_doi |
https://doi.org/10.1073/pnas.2025453118 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
118 |
container_issue |
15 |
_version_ |
1766336975169650688 |