Effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery
A new cod-end concept developed and tested exhibited significantly improved quality of caught cod (Gadus morhua) compared with that of the conventional cod end used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving cod end raised concerns about its size select...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
2019
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Online Access: | http://dx.doi.org/10.1139/cjfas-2018-0402 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0402 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0402 |
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crcansciencepubl:10.1139/cjfas-2018-0402 2024-03-03T08:43:05+00:00 Effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Veiga-Malta, Tiago 2019 http://dx.doi.org/10.1139/cjfas-2018-0402 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0402 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0402 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 76, issue 11, page 2110-2120 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2019 crcansciencepubl https://doi.org/10.1139/cjfas-2018-0402 2024-02-07T10:53:40Z A new cod-end concept developed and tested exhibited significantly improved quality of caught cod (Gadus morhua) compared with that of the conventional cod end used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving cod end 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 cod end in the Barents Sea bottom trawl fishery. The new quality-improving cod end had significantly lower relative size selectivity than the conventional cod end, 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 cod end was minor. Hence, despite the reduced selectivity, the quality-improving cod end can be used with low risk of retaining small cod. Article in Journal/Newspaper Barents Sea Gadus morhua Canadian Science Publishing Barents Sea Canadian Journal of Fisheries and Aquatic Sciences 76 11 2110 2120 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Veiga-Malta, Tiago Effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
A new cod-end concept developed and tested exhibited significantly improved quality of caught cod (Gadus morhua) compared with that of the conventional cod end used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving cod end 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 cod end in the Barents Sea bottom trawl fishery. The new quality-improving cod end had significantly lower relative size selectivity than the conventional cod end, 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 cod end was minor. Hence, despite the reduced selectivity, the quality-improving cod end can be used with low risk of retaining small cod. |
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 cod end on size selectivity and catch patterns of cod in bottom trawl fishery |
title_short |
Effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery |
title_full |
Effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery |
title_fullStr |
Effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery |
title_full_unstemmed |
Effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery |
title_sort |
effect of a quality-improving cod end on size selectivity and catch patterns of cod in bottom trawl fishery |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
http://dx.doi.org/10.1139/cjfas-2018-0402 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0402 http://www.nrcresearchpress.com/doi/pdf/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 volume 76, issue 11, page 2110-2120 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
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_ |
1792498513364385792 |