“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod
With the decline of many of the world’s fisheries, increased regulation, including marine protected areas (MPA), forms an increasingly important role in promoting sustainable resource use. Here, we present a novel “real-time” genetic monitoring programme used to protect the depleted Norwegian coasta...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2488582 https://doi.org/10.1093/icesjms/fsx224 |
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ftimr:oai:imr.brage.unit.no:11250/2488582 2024-09-15T17:52:28+00:00 “Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod Johansen, Torild Westgaard, Jon-Ivar Seliussen, Bjørghild Breistein Nedreaas, Kjell Harald Dahle, Geir Glover, Kevin Kvalsund, Roger Aglen, Asgeir 2017 application/pdf http://hdl.handle.net/11250/2488582 https://doi.org/10.1093/icesjms/fsx224 eng eng urn:issn:1054-3139 http://hdl.handle.net/11250/2488582 https://doi.org/10.1093/icesjms/fsx224 cristin:1565819 ICES Journal of Marine Science Journal article Peer reviewed 2017 ftimr https://doi.org/10.1093/icesjms/fsx224 2024-07-31T03:37:25Z With the decline of many of the world’s fisheries, increased regulation, including marine protected areas (MPA), forms an increasingly important role in promoting sustainable resource use. Here, we present a novel “real-time” genetic monitoring programme used to protect the depleted Norwegian coastal cod stock (NCC) in an MPA during the spawning season, while a fishery targeted at the sustainable Northeast Arctic cod stock (NEAC) operates immediately outside. In the period 2009–2016, >6800 cod from the fishery were genotyped with the PanI locus that is discriminatory between these two stocks. The estimated fraction of NEAC increased during the study period until 2014; however, it did not exceed 70% for any sustained period. Therefore, the MPA remained closed for commercial harvest. Genetic analysis of eggs revealed a distinctly lower fraction of NEAC than in the catch from the adult stock, both immediately outside and within the MPA itself. We suggest that this discrepancy is likely to reflect differences in spawning areas used by NCC and NEAC. Estimated fractions of NEAC/NCC using PanI, otolith classification, and 39 single nucleotide polymorphisms were similar, thus validating the use of PanI to estimate NEAC/NCC composition. publishedVersion Article in Journal/Newspaper Arctic cod atlantic cod Northeast Arctic cod Institute for Marine Research: Brage IMR ICES Journal of Marine Science 75 3 1093 1104 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
With the decline of many of the world’s fisheries, increased regulation, including marine protected areas (MPA), forms an increasingly important role in promoting sustainable resource use. Here, we present a novel “real-time” genetic monitoring programme used to protect the depleted Norwegian coastal cod stock (NCC) in an MPA during the spawning season, while a fishery targeted at the sustainable Northeast Arctic cod stock (NEAC) operates immediately outside. In the period 2009–2016, >6800 cod from the fishery were genotyped with the PanI locus that is discriminatory between these two stocks. The estimated fraction of NEAC increased during the study period until 2014; however, it did not exceed 70% for any sustained period. Therefore, the MPA remained closed for commercial harvest. Genetic analysis of eggs revealed a distinctly lower fraction of NEAC than in the catch from the adult stock, both immediately outside and within the MPA itself. We suggest that this discrepancy is likely to reflect differences in spawning areas used by NCC and NEAC. Estimated fractions of NEAC/NCC using PanI, otolith classification, and 39 single nucleotide polymorphisms were similar, thus validating the use of PanI to estimate NEAC/NCC composition. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Johansen, Torild Westgaard, Jon-Ivar Seliussen, Bjørghild Breistein Nedreaas, Kjell Harald Dahle, Geir Glover, Kevin Kvalsund, Roger Aglen, Asgeir |
spellingShingle |
Johansen, Torild Westgaard, Jon-Ivar Seliussen, Bjørghild Breistein Nedreaas, Kjell Harald Dahle, Geir Glover, Kevin Kvalsund, Roger Aglen, Asgeir “Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod |
author_facet |
Johansen, Torild Westgaard, Jon-Ivar Seliussen, Bjørghild Breistein Nedreaas, Kjell Harald Dahle, Geir Glover, Kevin Kvalsund, Roger Aglen, Asgeir |
author_sort |
Johansen, Torild |
title |
“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod |
title_short |
“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod |
title_full |
“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod |
title_fullStr |
“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod |
title_full_unstemmed |
“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod |
title_sort |
“real-time” genetic monitoring of a commercial fishery on the doorstep of an mpa reveals unique insights into the interaction between coastal and migratory forms of the atlantic cod |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2488582 https://doi.org/10.1093/icesjms/fsx224 |
genre |
Arctic cod atlantic cod Northeast Arctic cod |
genre_facet |
Arctic cod atlantic cod Northeast Arctic cod |
op_source |
ICES Journal of Marine Science |
op_relation |
urn:issn:1054-3139 http://hdl.handle.net/11250/2488582 https://doi.org/10.1093/icesjms/fsx224 cristin:1565819 |
op_doi |
https://doi.org/10.1093/icesjms/fsx224 |
container_title |
ICES Journal of Marine Science |
container_volume |
75 |
container_issue |
3 |
container_start_page |
1093 |
op_container_end_page |
1104 |
_version_ |
1810294489773768704 |