Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness
In most trawl fisheries, drag forces tend to close the meshes in large areas of diamond mesh codends, negatively affecting their selective potential. In the Barents Sea deep-water shrimp (Pandalus borealis) trawl fishery, selectivity is based on a sorting grid followed by a diamond mesh codend. Howe...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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2022
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Online Access: | http://dx.doi.org/10.1139/cjfas-2021-0045 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0045 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0045 |
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crcansciencepubl:10.1139/cjfas-2021-0045 2023-12-17T10:27:51+01:00 Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness Jacques, Nadine Pettersen, Hermann Cerbule, Kristine Herrmann, Bent Ingólfsson, Ólafur Arnar Sistiaga, Manu Larsen, Roger B. Brinkhof, Jesse Grimaldo, Eduardo Brčić, Jure Lilleng, Dagfinn 2022 http://dx.doi.org/10.1139/cjfas-2021-0045 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0045 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0045 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 79, issue 2, page 331-341 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2022 crcansciencepubl https://doi.org/10.1139/cjfas-2021-0045 2023-11-19T13:39:14Z In most trawl fisheries, drag forces tend to close the meshes in large areas of diamond mesh codends, negatively affecting their selective potential. In the Barents Sea deep-water shrimp (Pandalus borealis) trawl fishery, selectivity is based on a sorting grid followed by a diamond mesh codend. However, the retention of juvenile fish as well as undersized shrimp is still a problem. In this study, we estimated the effect of applying different codend modifications, each aimed at affecting codend mesh openness and thereby selectivity. Changing from a 4-panel to a 2-panel construction of the codend did not affect size selectivity. Shortening the lastridge ropes of a 4-panel codend by 20% resulted in minor reductions for juvenile fish bycatch, but a 45% reduction of undersized shrimp was observed. Target-size catches of shrimp were nearly unaffected. When the codend mesh circumference was reduced while simultaneously shortening the lastridge ropes, the effect on catch efficiency for shrimp or juvenile fish bycatch was marginal compared to a 4-panel codend design with shortened lastridge ropes. Article in Journal/Newspaper Barents Sea Pandalus borealis Canadian Science Publishing (via Crossref) Barents Sea Canadian Journal of Fisheries and Aquatic Sciences |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Jacques, Nadine Pettersen, Hermann Cerbule, Kristine Herrmann, Bent Ingólfsson, Ólafur Arnar Sistiaga, Manu Larsen, Roger B. Brinkhof, Jesse Grimaldo, Eduardo Brčić, Jure Lilleng, Dagfinn Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
In most trawl fisheries, drag forces tend to close the meshes in large areas of diamond mesh codends, negatively affecting their selective potential. In the Barents Sea deep-water shrimp (Pandalus borealis) trawl fishery, selectivity is based on a sorting grid followed by a diamond mesh codend. However, the retention of juvenile fish as well as undersized shrimp is still a problem. In this study, we estimated the effect of applying different codend modifications, each aimed at affecting codend mesh openness and thereby selectivity. Changing from a 4-panel to a 2-panel construction of the codend did not affect size selectivity. Shortening the lastridge ropes of a 4-panel codend by 20% resulted in minor reductions for juvenile fish bycatch, but a 45% reduction of undersized shrimp was observed. Target-size catches of shrimp were nearly unaffected. When the codend mesh circumference was reduced while simultaneously shortening the lastridge ropes, the effect on catch efficiency for shrimp or juvenile fish bycatch was marginal compared to a 4-panel codend design with shortened lastridge ropes. |
format |
Article in Journal/Newspaper |
author |
Jacques, Nadine Pettersen, Hermann Cerbule, Kristine Herrmann, Bent Ingólfsson, Ólafur Arnar Sistiaga, Manu Larsen, Roger B. Brinkhof, Jesse Grimaldo, Eduardo Brčić, Jure Lilleng, Dagfinn |
author_facet |
Jacques, Nadine Pettersen, Hermann Cerbule, Kristine Herrmann, Bent Ingólfsson, Ólafur Arnar Sistiaga, Manu Larsen, Roger B. Brinkhof, Jesse Grimaldo, Eduardo Brčić, Jure Lilleng, Dagfinn |
author_sort |
Jacques, Nadine |
title |
Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness |
title_short |
Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness |
title_full |
Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness |
title_fullStr |
Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness |
title_full_unstemmed |
Bycatch reduction in the deep-water shrimp ( Pandalus borealis ) trawl fishery by increasing codend mesh openness |
title_sort |
bycatch reduction in the deep-water shrimp ( pandalus borealis ) trawl fishery by increasing codend mesh openness |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/cjfas-2021-0045 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0045 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0045 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Pandalus borealis |
genre_facet |
Barents Sea Pandalus borealis |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 79, issue 2, page 331-341 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2021-0045 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
_version_ |
1785579772912336896 |