Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery
A new codend concept developed and tested exhibited significantly improved quality of caught cod (Gadus morhua) compared to that of the conventional codend used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving codend raised concerns about its size selectivity...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://orbit.dtu.dk/en/publications/1297ce8e-7ff2-4b44-8342-05f47143253c https://doi.org/10.1139/cjfas-2018-0402 https://backend.orbit.dtu.dk/ws/files/170838510/untitled.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/1297ce8e-7ff2-4b44-8342-05f47143253c 2023-06-11T04:10:33+02:00 Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Malta, Tiago Alexandre Matias da Veiga 2019 application/pdf https://orbit.dtu.dk/en/publications/1297ce8e-7ff2-4b44-8342-05f47143253c https://doi.org/10.1139/cjfas-2018-0402 https://backend.orbit.dtu.dk/ws/files/170838510/untitled.pdf eng eng info:eu-repo/semantics/openAccess Brinkhof , J , Herrmann , B , Larsen , R B & Malta , T A M D V 2019 , ' Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 76 , no. 11 , pp. 2110-2120 . https://doi.org/10.1139/cjfas-2018-0402 Codend Bottom trawl Cod Sequential codend Size selectivity /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water article 2019 ftdtupubl https://doi.org/10.1139/cjfas-2018-0402 2023-04-26T22:56:47Z A new codend concept developed and tested exhibited significantly improved quality of caught cod (Gadus morhua) compared to that of the conventional codend used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving codend raised concerns about its size selectivity and the possibility that higher retention probability could negatively impact the catch pattern by increasing the proportion of undersized cod. Therefore, the goal of this study was to quantify and compare the size selectivity and catch pattern for cod when deploying respectively the conventional and new quality-improving codend in the Barents Sea bottom trawl fishery. The new quality-improving codend had significantly lower relative size selectivity than the conventional codend, but no significant difference in the catch patterns was detected in the trawl. Further, estimation of the total size selectivity in the trawl revealed that the increased retention of small cod when using the quality-improving codend was minor. Hence, despite the reduced selectivity, the quality-improving codend can be used with low risk of retaining small cod. Article in Journal/Newspaper Barents Sea Gadus morhua Technical University of Denmark: DTU Orbit Barents Sea Canadian Journal of Fisheries and Aquatic Sciences 76 11 2110 2120 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Codend Bottom trawl Cod Sequential codend Size selectivity /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
spellingShingle |
Codend Bottom trawl Cod Sequential codend Size selectivity /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Malta, Tiago Alexandre Matias da Veiga Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery |
topic_facet |
Codend Bottom trawl Cod Sequential codend Size selectivity /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
description |
A new codend concept developed and tested exhibited significantly improved quality of caught cod (Gadus morhua) compared to that of the conventional codend used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving codend raised concerns about its size selectivity and the possibility that higher retention probability could negatively impact the catch pattern by increasing the proportion of undersized cod. Therefore, the goal of this study was to quantify and compare the size selectivity and catch pattern for cod when deploying respectively the conventional and new quality-improving codend in the Barents Sea bottom trawl fishery. The new quality-improving codend had significantly lower relative size selectivity than the conventional codend, but no significant difference in the catch patterns was detected in the trawl. Further, estimation of the total size selectivity in the trawl revealed that the increased retention of small cod when using the quality-improving codend was minor. Hence, despite the reduced selectivity, the quality-improving codend can be used with low risk of retaining small cod. |
format |
Article in Journal/Newspaper |
author |
Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Malta, Tiago Alexandre Matias da Veiga |
author_facet |
Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Malta, Tiago Alexandre Matias da Veiga |
author_sort |
Brinkhof, Jesse |
title |
Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery |
title_short |
Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery |
title_full |
Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery |
title_fullStr |
Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery |
title_full_unstemmed |
Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery |
title_sort |
effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery |
publishDate |
2019 |
url |
https://orbit.dtu.dk/en/publications/1297ce8e-7ff2-4b44-8342-05f47143253c https://doi.org/10.1139/cjfas-2018-0402 https://backend.orbit.dtu.dk/ws/files/170838510/untitled.pdf |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Gadus morhua |
genre_facet |
Barents Sea Gadus morhua |
op_source |
Brinkhof , J , Herrmann , B , Larsen , R B & Malta , T A M D V 2019 , ' Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 76 , no. 11 , pp. 2110-2120 . https://doi.org/10.1139/cjfas-2018-0402 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1139/cjfas-2018-0402 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
76 |
container_issue |
11 |
container_start_page |
2110 |
op_container_end_page |
2120 |
_version_ |
1768385003542020096 |