Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.)
Identifying how physical and biotic factors shape genetic connectivity among populations in time and space is essential to our understanding of the evolutionary trajectory as well as the management of marine species. Atlantic cod is a widespread and commercially important marine species displaying s...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9309456/ http://www.ncbi.nlm.nih.gov/pubmed/35899259 https://doi.org/10.1111/eva.13422 |
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ftpubmed:oai:pubmedcentral.nih.gov:9309456 2023-05-15T14:30:31+02:00 Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.) Breistein, Bjoerghild Dahle, Geir Johansen, Torild Besnier, Francois Quintela, Maria Jorde, Per Erik Knutsen, Halvor Westgaard, Jon‐Ivar Nedreaas, Kjell Farestveit, Eva Glover, Kevin Alan 2022-06-21 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9309456/ http://www.ncbi.nlm.nih.gov/pubmed/35899259 https://doi.org/10.1111/eva.13422 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9309456/ http://www.ncbi.nlm.nih.gov/pubmed/35899259 http://dx.doi.org/10.1111/eva.13422 © 2022 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Evol Appl Original Articles Text 2022 ftpubmed https://doi.org/10.1111/eva.13422 2022-07-31T02:45:09Z Identifying how physical and biotic factors shape genetic connectivity among populations in time and space is essential to our understanding of the evolutionary trajectory as well as the management of marine species. Atlantic cod is a widespread and commercially important marine species displaying several ecotypes with different life history strategies. Using three sets of SNPs: neutral, informative, and genome‐inversion linked, we studied population genetic structure of ~2500 coastal Atlantic cod (CC) from 40 locations along Norway's 2500 km coastline, including nine fjords. We observed: (1) a genetic cline, suggesting a mechanism of isolation by distance, characterized by a declining F (ST) between CC and North East Arctic Cod (NEAC—genetically distinct migratory ecotype) with increasing latitude, (2) that in the north, samples of CC from outer‐fjord areas were genetically more similar to NEAC than were samples of CC from their corresponding inner‐fjord areas, (3) greater population genetic differentiation among CC sampled from outer‐fjord areas along the coast, than among CC sampled from their corresponding inner‐fjord areas, (4) genetic differentiation among samples of CC from both within and among fjords. Collectively, these results permit us to draw two main conclusions. First, that differences in the relative presence of the genetically highly distinct, migratory ecotype NEAC, declining from north to south and from outer to inner fjord, plays the major role in driving population genetic structure of the Norwegian CC. Second, that there is limited connectivity between CC from different fjords. These results suggest that the current management units implemented for this species in Norway should be divided into smaller entities. Furthermore, the situation where introgression from one ecotype drives population genetic structure of another, as is the case here, may exist in other species and geographical regions, thus creating additional challenges for sustainable fisheries management. Text Arctic cod Arctic atlantic cod Gadus morhua PubMed Central (PMC) Arctic Norway Evolutionary Applications 15 7 1162 1176 |
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PubMed Central (PMC) |
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English |
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Original Articles |
spellingShingle |
Original Articles Breistein, Bjoerghild Dahle, Geir Johansen, Torild Besnier, Francois Quintela, Maria Jorde, Per Erik Knutsen, Halvor Westgaard, Jon‐Ivar Nedreaas, Kjell Farestveit, Eva Glover, Kevin Alan Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.) |
topic_facet |
Original Articles |
description |
Identifying how physical and biotic factors shape genetic connectivity among populations in time and space is essential to our understanding of the evolutionary trajectory as well as the management of marine species. Atlantic cod is a widespread and commercially important marine species displaying several ecotypes with different life history strategies. Using three sets of SNPs: neutral, informative, and genome‐inversion linked, we studied population genetic structure of ~2500 coastal Atlantic cod (CC) from 40 locations along Norway's 2500 km coastline, including nine fjords. We observed: (1) a genetic cline, suggesting a mechanism of isolation by distance, characterized by a declining F (ST) between CC and North East Arctic Cod (NEAC—genetically distinct migratory ecotype) with increasing latitude, (2) that in the north, samples of CC from outer‐fjord areas were genetically more similar to NEAC than were samples of CC from their corresponding inner‐fjord areas, (3) greater population genetic differentiation among CC sampled from outer‐fjord areas along the coast, than among CC sampled from their corresponding inner‐fjord areas, (4) genetic differentiation among samples of CC from both within and among fjords. Collectively, these results permit us to draw two main conclusions. First, that differences in the relative presence of the genetically highly distinct, migratory ecotype NEAC, declining from north to south and from outer to inner fjord, plays the major role in driving population genetic structure of the Norwegian CC. Second, that there is limited connectivity between CC from different fjords. These results suggest that the current management units implemented for this species in Norway should be divided into smaller entities. Furthermore, the situation where introgression from one ecotype drives population genetic structure of another, as is the case here, may exist in other species and geographical regions, thus creating additional challenges for sustainable fisheries management. |
format |
Text |
author |
Breistein, Bjoerghild Dahle, Geir Johansen, Torild Besnier, Francois Quintela, Maria Jorde, Per Erik Knutsen, Halvor Westgaard, Jon‐Ivar Nedreaas, Kjell Farestveit, Eva Glover, Kevin Alan |
author_facet |
Breistein, Bjoerghild Dahle, Geir Johansen, Torild Besnier, Francois Quintela, Maria Jorde, Per Erik Knutsen, Halvor Westgaard, Jon‐Ivar Nedreaas, Kjell Farestveit, Eva Glover, Kevin Alan |
author_sort |
Breistein, Bjoerghild |
title |
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.) |
title_short |
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.) |
title_full |
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.) |
title_fullStr |
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.) |
title_full_unstemmed |
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.) |
title_sort |
geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal atlantic cod (gadus morhua l.) |
publisher |
John Wiley and Sons Inc. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9309456/ http://www.ncbi.nlm.nih.gov/pubmed/35899259 https://doi.org/10.1111/eva.13422 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic cod Arctic atlantic cod Gadus morhua |
genre_facet |
Arctic cod Arctic atlantic cod Gadus morhua |
op_source |
Evol Appl |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9309456/ http://www.ncbi.nlm.nih.gov/pubmed/35899259 http://dx.doi.org/10.1111/eva.13422 |
op_rights |
© 2022 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/eva.13422 |
container_title |
Evolutionary Applications |
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15 |
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7 |
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1162 |
op_container_end_page |
1176 |
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1766304357517623296 |