The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic
Coastal Atlantic cod (Gadus morhua) in the Northeast Atlantic has seen a continuous decline since the industrialization of the coastal fishery, and management needs to address the spatial and temporal complexities of coexisting cod stocks. Toward that end, genetic analyses and oceanographic modellin...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2021
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Online Access: | http://dx.doi.org/10.1139/cjfas-2020-0380 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2020-0380 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2020-0380 |
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crcansciencepubl:10.1139/cjfas-2020-0380 2024-09-15T17:52:26+00:00 The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic Jorde, Per Erik Huserbråten, Mats B.O. Seliussen, Bjørghild B. Myksvoll, Mari S. Vikebø, Frode B. Dahle, Geir Aglen, Asgeir Johansen, Torild Norges Forskningsråd Nærings- og Fiskeridepartementet 2021 http://dx.doi.org/10.1139/cjfas-2020-0380 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2020-0380 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2020-0380 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 78, issue 7, page 958-968 ISSN 0706-652X 1205-7533 journal-article 2021 crcansciencepubl https://doi.org/10.1139/cjfas-2020-0380 2024-08-29T04:08:50Z Coastal Atlantic cod (Gadus morhua) in the Northeast Atlantic has seen a continuous decline since the industrialization of the coastal fishery, and management needs to address the spatial and temporal complexities of coexisting cod stocks. Toward that end, genetic analyses and oceanographic modelling of coastal and oceanic cod larval drift patterns were combined to elucidate the mechanisms responsible for an observed genetic cline over a >1500 km stretch along the coast of Norway. The results indicate that the north–south cline in coastal cod represents an extended contact zone between genetically divergent North Sea and Northeast Arctic cod and is maintained by two-way gene flow: by northward drift of pelagic eggs and larvae and by southward spawning migrations of Northeast Arctic cod. Computer simulations verify that the genetic cline can be established rapidly if gene flow into coastal populations is substantial. The shape of the cline, on the other hand, was found to be largely insensitive to the total amount of gene flow and therefore carries little information on extent of gene flow into and among coastal populations. Article in Journal/Newspaper Arctic cod atlantic cod Gadus morhua Northeast Arctic cod Northeast Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 1 11 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Coastal Atlantic cod (Gadus morhua) in the Northeast Atlantic has seen a continuous decline since the industrialization of the coastal fishery, and management needs to address the spatial and temporal complexities of coexisting cod stocks. Toward that end, genetic analyses and oceanographic modelling of coastal and oceanic cod larval drift patterns were combined to elucidate the mechanisms responsible for an observed genetic cline over a >1500 km stretch along the coast of Norway. The results indicate that the north–south cline in coastal cod represents an extended contact zone between genetically divergent North Sea and Northeast Arctic cod and is maintained by two-way gene flow: by northward drift of pelagic eggs and larvae and by southward spawning migrations of Northeast Arctic cod. Computer simulations verify that the genetic cline can be established rapidly if gene flow into coastal populations is substantial. The shape of the cline, on the other hand, was found to be largely insensitive to the total amount of gene flow and therefore carries little information on extent of gene flow into and among coastal populations. |
author2 |
Norges Forskningsråd Nærings- og Fiskeridepartementet |
format |
Article in Journal/Newspaper |
author |
Jorde, Per Erik Huserbråten, Mats B.O. Seliussen, Bjørghild B. Myksvoll, Mari S. Vikebø, Frode B. Dahle, Geir Aglen, Asgeir Johansen, Torild |
spellingShingle |
Jorde, Per Erik Huserbråten, Mats B.O. Seliussen, Bjørghild B. Myksvoll, Mari S. Vikebø, Frode B. Dahle, Geir Aglen, Asgeir Johansen, Torild The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic |
author_facet |
Jorde, Per Erik Huserbråten, Mats B.O. Seliussen, Bjørghild B. Myksvoll, Mari S. Vikebø, Frode B. Dahle, Geir Aglen, Asgeir Johansen, Torild |
author_sort |
Jorde, Per Erik |
title |
The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic |
title_short |
The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic |
title_full |
The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic |
title_fullStr |
The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic |
title_full_unstemmed |
The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the Northeast Atlantic |
title_sort |
making of a genetic cline: introgression of oceanic genes into coastal cod populations in the northeast atlantic |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
http://dx.doi.org/10.1139/cjfas-2020-0380 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2020-0380 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2020-0380 |
genre |
Arctic cod atlantic cod Gadus morhua Northeast Arctic cod Northeast Atlantic |
genre_facet |
Arctic cod atlantic cod Gadus morhua Northeast Arctic cod Northeast Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 78, issue 7, page 958-968 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2020-0380 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_start_page |
1 |
op_container_end_page |
11 |
_version_ |
1810294474931175424 |