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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Canadian Science Publishing
2019
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Online Access: | http://hdl.handle.net/11250/2591635 https://doi.org/10.1139/cjfas-2018-0402 |
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ftsintef:oai:sintef.brage.unit.no:11250/2591635 2023-05-15T15:38:40+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. Veiga-Malta, Tiago 2019-02-26 application/pdf http://hdl.handle.net/11250/2591635 https://doi.org/10.1139/cjfas-2018-0402 eng eng Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences, 2019 urn:issn:0706-652X http://hdl.handle.net/11250/2591635 https://doi.org/10.1139/cjfas-2018-0402 cristin:1680926 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND Canadian Journal of Fisheries and Aquatic Sciences Codend Bottom trawl Cod Sequential codend Size selectivity Journal article Peer reviewed 2019 ftsintef https://doi.org/10.1139/cjfas-2018-0402 2021-08-04T11:59:50Z 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. acceptedVersion Article in Journal/Newspaper Barents Sea Gadus morhua SINTEF Open (Brage) Barents Sea Canadian Journal of Fisheries and Aquatic Sciences 76 11 2110 2120 |
institution |
Open Polar |
collection |
SINTEF Open (Brage) |
op_collection_id |
ftsintef |
language |
English |
topic |
Codend Bottom trawl Cod Sequential codend Size selectivity |
spellingShingle |
Codend Bottom trawl Cod Sequential codend Size selectivity Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Veiga-Malta, Tiago 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 |
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. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Veiga-Malta, Tiago |
author_facet |
Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Veiga-Malta, Tiago |
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 |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2591635 https://doi.org/10.1139/cjfas-2018-0402 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Gadus morhua |
genre_facet |
Barents Sea Gadus morhua |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences |
op_relation |
Canadian Journal of Fisheries and Aquatic Sciences, 2019 urn:issn:0706-652X http://hdl.handle.net/11250/2591635 https://doi.org/10.1139/cjfas-2018-0402 cristin:1680926 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
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_ |
1766369891685761024 |