Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries
In many trawl fisheries, codend size selectivity is supplemented by adding selection devices to the gear. In the Barents Sea gadoid fishery, combining diamond mesh codends with sorting grids is compulsory. However, the use of grids increases the costs and complexity of the gear, causing discontent a...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2022
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Online Access: | https://orbit.dtu.dk/en/publications/bdefd9a3-fa60-4fac-a2ae-8696aac93066 https://doi.org/10.1139/cjfas-2021-0178 https://backend.orbit.dtu.dk/ws/files/274837521/cjfas_2021_0178.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/bdefd9a3-fa60-4fac-a2ae-8696aac93066 2024-09-15T17:57:57+00:00 Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries Sistiaga, Manu Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Grimaldo, Eduardo Cerbule, Kristine Brinkhof, Ilmar Jørgensen, Terje 2022 application/pdf https://orbit.dtu.dk/en/publications/bdefd9a3-fa60-4fac-a2ae-8696aac93066 https://doi.org/10.1139/cjfas-2021-0178 https://backend.orbit.dtu.dk/ws/files/274837521/cjfas_2021_0178.pdf eng eng https://orbit.dtu.dk/en/publications/bdefd9a3-fa60-4fac-a2ae-8696aac93066 info:eu-repo/semantics/openAccess Sistiaga , M , Brinkhof , J , Herrmann , B , Larsen , R B , Grimaldo , E , Cerbule , K , Brinkhof , I & Jørgensen , T 2022 , ' Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 79 , no. 5 , pp. 834-849 . https://doi.org/10.1139/cjfas-2021-0178 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2022 ftdtupubl https://doi.org/10.1139/cjfas-2021-0178 2024-08-13T00:03:06Z In many trawl fisheries, codend size selectivity is supplemented by adding selection devices to the gear. In the Barents Sea gadoid fishery, combining diamond mesh codends with sorting grids is compulsory. However, the use of grids increases the costs and complexity of the gear, causing discontent among fishermen and prompting researchers to seek alternative solutions. Lastridge ropes are ropes attached to the selvedges of the codend. In this study, we tested the effect of shortening the lastridge ropes of two diamond mesh codends with different mesh sizes on the size selectivity of cod ( Gadus morhua ), haddock ( Melanogramus aeglefinnus ), and redfish ( Sebastes spp.). Shortening the lastridge ropes by 15% increased the mesh opening during the fishing process, which significantly improved the size-selective properties of the codends. Further, the L50 values were always higher for the codends in the short lastridge configuration. Therefore, codends with shortened lastridge ropes may be a simpler alternative to sorting grids in this fishery, and they may be applicable to many other fisheries in which additional selection devices are used. Article in Journal/Newspaper Barents Sea Gadus morhua Technical University of Denmark: DTU Orbit Canadian Journal of Fisheries and Aquatic Sciences 79 5 834 849 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Sistiaga, Manu Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Grimaldo, Eduardo Cerbule, Kristine Brinkhof, Ilmar Jørgensen, Terje Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
In many trawl fisheries, codend size selectivity is supplemented by adding selection devices to the gear. In the Barents Sea gadoid fishery, combining diamond mesh codends with sorting grids is compulsory. However, the use of grids increases the costs and complexity of the gear, causing discontent among fishermen and prompting researchers to seek alternative solutions. Lastridge ropes are ropes attached to the selvedges of the codend. In this study, we tested the effect of shortening the lastridge ropes of two diamond mesh codends with different mesh sizes on the size selectivity of cod ( Gadus morhua ), haddock ( Melanogramus aeglefinnus ), and redfish ( Sebastes spp.). Shortening the lastridge ropes by 15% increased the mesh opening during the fishing process, which significantly improved the size-selective properties of the codends. Further, the L50 values were always higher for the codends in the short lastridge configuration. Therefore, codends with shortened lastridge ropes may be a simpler alternative to sorting grids in this fishery, and they may be applicable to many other fisheries in which additional selection devices are used. |
format |
Article in Journal/Newspaper |
author |
Sistiaga, Manu Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Grimaldo, Eduardo Cerbule, Kristine Brinkhof, Ilmar Jørgensen, Terje |
author_facet |
Sistiaga, Manu Brinkhof, Jesse Herrmann, Bent Larsen, Roger B. Grimaldo, Eduardo Cerbule, Kristine Brinkhof, Ilmar Jørgensen, Terje |
author_sort |
Sistiaga, Manu |
title |
Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries |
title_short |
Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries |
title_full |
Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries |
title_fullStr |
Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries |
title_full_unstemmed |
Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries |
title_sort |
potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries |
publishDate |
2022 |
url |
https://orbit.dtu.dk/en/publications/bdefd9a3-fa60-4fac-a2ae-8696aac93066 https://doi.org/10.1139/cjfas-2021-0178 https://backend.orbit.dtu.dk/ws/files/274837521/cjfas_2021_0178.pdf |
genre |
Barents Sea Gadus morhua |
genre_facet |
Barents Sea Gadus morhua |
op_source |
Sistiaga , M , Brinkhof , J , Herrmann , B , Larsen , R B , Grimaldo , E , Cerbule , K , Brinkhof , I & Jørgensen , T 2022 , ' Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 79 , no. 5 , pp. 834-849 . https://doi.org/10.1139/cjfas-2021-0178 |
op_relation |
https://orbit.dtu.dk/en/publications/bdefd9a3-fa60-4fac-a2ae-8696aac93066 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1139/cjfas-2021-0178 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
79 |
container_issue |
5 |
container_start_page |
834 |
op_container_end_page |
849 |
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1810434164020740096 |