Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod ( Gadus morhua L.)
Abstract 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 dis...
Published in: | Evolutionary Applications |
---|---|
Main Authors: | , , , , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/eva.13422 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13422 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13422 |
id |
crwiley:10.1111/eva.13422 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/eva.13422 2024-09-15T17:52:28+00:00 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 Norges Forskningsråd Research Council, Rutgers, The State University of New Jersey 2022 http://dx.doi.org/10.1111/eva.13422 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13422 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13422 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Evolutionary Applications volume 15, issue 7, page 1162-1176 ISSN 1752-4571 1752-4571 journal-article 2022 crwiley https://doi.org/10.1111/eva.13422 2024-08-22T04:15:51Z Abstract 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. Article in Journal/Newspaper Arctic cod atlantic cod Gadus morhua Wiley Online Library Evolutionary Applications 15 7 1162 1176 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract 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. |
author2 |
Norges Forskningsråd Research Council, Rutgers, The State University of New Jersey |
format |
Article in Journal/Newspaper |
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 |
spellingShingle |
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.) |
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 |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/eva.13422 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13422 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13422 |
genre |
Arctic cod atlantic cod Gadus morhua |
genre_facet |
Arctic cod atlantic cod Gadus morhua |
op_source |
Evolutionary Applications volume 15, issue 7, page 1162-1176 ISSN 1752-4571 1752-4571 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/eva.13422 |
container_title |
Evolutionary Applications |
container_volume |
15 |
container_issue |
7 |
container_start_page |
1162 |
op_container_end_page |
1176 |
_version_ |
1810294500465049600 |