Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017
Fish stocks represent fundamental units in fisheries management, and their identification, especially in mixed-fisheries, represents one of the primary challenges to sustainable harvest. Here, we describe the first “real-time” genetic management program used to manage a mixed-stock fishery of a non-...
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2559911 https://doi.org/10.1016/j.fishres.2018.04.006 |
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ftimr:oai:imr.brage.unit.no:11250/2559911 2023-05-15T14:30:28+02:00 Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 Dahle, Geir Johansen, Torild Westgaard, Jon-Ivar Aglen, Asgeir Glover, Kevin 2018 application/pdf http://hdl.handle.net/11250/2559911 https://doi.org/10.1016/j.fishres.2018.04.006 eng eng Fisheries Research. 2018, 205 77-85. urn:issn:0165-7836 http://hdl.handle.net/11250/2559911 https://doi.org/10.1016/j.fishres.2018.04.006 cristin:1590202 77-85 205 Fisheries Research Journal article Peer reviewed 2018 ftimr https://doi.org/10.1016/j.fishres.2018.04.006 2021-09-23T20:14:36Z Fish stocks represent fundamental units in fisheries management, and their identification, especially in mixed-fisheries, represents one of the primary challenges to sustainable harvest. Here, we describe the first “real-time” genetic management program used to manage a mixed-stock fishery of a non-salmonid and commercially significant marine fish, the Atlantic cod (Gadus morhua L). Based upon the analysis of >18 000 fish sampled from the commercial catch in Lofoten (Norway), which represents the largest remaining cod fishery in the Atlantic, we estimated the fraction of North East Arctic cod (NEAC), and Norwegian Coastal cod (NCC), just 24 h post-landing. These estimates, based upon the analysis of the Pantophysin gene, were performed weekly in the winter and spring of each year in the period 2007–2017. The program has successfully permitted the Norwegian Directorate of Fisheries to actively manage the commercial exploitation of the highly abundant NEAC stock, while simultaneously limiting exploitation of the fragile NCC stock, both of which overlap at the spawning grounds. Data from this program have also revealed a distinct temporal increase in the fraction of NEAC on the spawning grounds in this region, which is consistent with the overall increased abundance of this stock as estimated by ICES. publishedVersion Article in Journal/Newspaper Arctic cod Arctic atlantic cod Gadus morhua Lofoten Institute for Marine Research: Brage IMR Arctic Lofoten Norway Fisheries Research 205 77 85 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Fish stocks represent fundamental units in fisheries management, and their identification, especially in mixed-fisheries, represents one of the primary challenges to sustainable harvest. Here, we describe the first “real-time” genetic management program used to manage a mixed-stock fishery of a non-salmonid and commercially significant marine fish, the Atlantic cod (Gadus morhua L). Based upon the analysis of >18 000 fish sampled from the commercial catch in Lofoten (Norway), which represents the largest remaining cod fishery in the Atlantic, we estimated the fraction of North East Arctic cod (NEAC), and Norwegian Coastal cod (NCC), just 24 h post-landing. These estimates, based upon the analysis of the Pantophysin gene, were performed weekly in the winter and spring of each year in the period 2007–2017. The program has successfully permitted the Norwegian Directorate of Fisheries to actively manage the commercial exploitation of the highly abundant NEAC stock, while simultaneously limiting exploitation of the fragile NCC stock, both of which overlap at the spawning grounds. Data from this program have also revealed a distinct temporal increase in the fraction of NEAC on the spawning grounds in this region, which is consistent with the overall increased abundance of this stock as estimated by ICES. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Dahle, Geir Johansen, Torild Westgaard, Jon-Ivar Aglen, Asgeir Glover, Kevin |
spellingShingle |
Dahle, Geir Johansen, Torild Westgaard, Jon-Ivar Aglen, Asgeir Glover, Kevin Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 |
author_facet |
Dahle, Geir Johansen, Torild Westgaard, Jon-Ivar Aglen, Asgeir Glover, Kevin |
author_sort |
Dahle, Geir |
title |
Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 |
title_short |
Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 |
title_full |
Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 |
title_fullStr |
Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 |
title_full_unstemmed |
Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 |
title_sort |
genetic management of mixed-stock fisheries "real-time": the case of the largest remaining cod fishery operating in the atlantic in 2007-2017 |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2559911 https://doi.org/10.1016/j.fishres.2018.04.006 |
geographic |
Arctic Lofoten Norway |
geographic_facet |
Arctic Lofoten Norway |
genre |
Arctic cod Arctic atlantic cod Gadus morhua Lofoten |
genre_facet |
Arctic cod Arctic atlantic cod Gadus morhua Lofoten |
op_source |
77-85 205 Fisheries Research |
op_relation |
Fisheries Research. 2018, 205 77-85. urn:issn:0165-7836 http://hdl.handle.net/11250/2559911 https://doi.org/10.1016/j.fishres.2018.04.006 cristin:1590202 |
op_doi |
https://doi.org/10.1016/j.fishres.2018.04.006 |
container_title |
Fisheries Research |
container_volume |
205 |
container_start_page |
77 |
op_container_end_page |
85 |
_version_ |
1766304310065364992 |