Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries
Sorting grids and square mesh panels are the two most-applied technical devices to supplement codend size- and species-selection in demer- sal trawls. In the Barents Sea gadoid fishery, the compulsory size-selectivity system comprises a mesh section with a sorting grid followed by a diamond mesh cod...
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2477336 https://doi.org/10.1093/icesjms/fsx231 |
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ftsintef:oai:sintef.brage.unit.no:11250/2477336 2023-05-15T14:30:30+02:00 Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries Sistiaga, Manu Berrondo Herrmann, Bent Grimaldo, Eduardo Larsen, Roger B. Olsen, Leonore Brinkhof, Jesse Tatone, Ivan 2017-11 application/pdf http://hdl.handle.net/11250/2477336 https://doi.org/10.1093/icesjms/fsx231 eng eng Norges forskningsråd: 243627 ICES Journal of Marine Science. 2017, . urn:issn:1054-3139 http://hdl.handle.net/11250/2477336 https://doi.org/10.1093/icesjms/fsx231 cristin:1537307 Navngivelse-Ikkekommersiell-DelPåSammeVilkår 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-sa/4.0/deed.no The authors CC-BY-NC-SA 12 ICES Journal of Marine Science bottom trawl fish behaviour grid size selection size selectivity Journal article Peer reviewed 2017 ftsintef https://doi.org/10.1093/icesjms/fsx231 2021-08-04T12:00:44Z Sorting grids and square mesh panels are the two most-applied technical devices to supplement codend size- and species-selection in demer- sal trawls. In the Barents Sea gadoid fishery, the compulsory size-selectivity system comprises a mesh section with a sorting grid followed by a diamond mesh codend. We tested the size-selective performance of a new sorting section that comprised a sorting grid combined with a square mesh panel as a potential alternative for the grid sections currently in use. The new sorting section was shorter and therefore more maneuverable than the existing sorting grid sections. The investigation was carried out on cod and the bycatch species redfish. The grid was found to contribute to the largest proportion of fish release, and the release through the square mesh panel was low. But, the results showed that the grid was successful at guiding fish not escaping through the grid to a second selection process in the panel. However, the square mesh panel did not result on the intended release efficiency except for the smallest sizes of fish, most likely because the guiding angle of the grid and the square meshes in the panel used did not provide a suitable escape path for the desired size range of fish. Therefore, optimizing the mesh size/shape in the panel and/or the guiding angle for the grid potentially could lead to the desired selectivity pattern in the new sort- ing section. acceptedVersion Article in Journal/Newspaper Arctic cod Arctic Barents Sea Gadus morhua SINTEF Open (Brage) Arctic Barents Sea ICES Journal of Marine Science 75 3 1105 1116 |
institution |
Open Polar |
collection |
SINTEF Open (Brage) |
op_collection_id |
ftsintef |
language |
English |
topic |
bottom trawl fish behaviour grid size selection size selectivity |
spellingShingle |
bottom trawl fish behaviour grid size selection size selectivity Sistiaga, Manu Berrondo Herrmann, Bent Grimaldo, Eduardo Larsen, Roger B. Olsen, Leonore Brinkhof, Jesse Tatone, Ivan Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries |
topic_facet |
bottom trawl fish behaviour grid size selection size selectivity |
description |
Sorting grids and square mesh panels are the two most-applied technical devices to supplement codend size- and species-selection in demer- sal trawls. In the Barents Sea gadoid fishery, the compulsory size-selectivity system comprises a mesh section with a sorting grid followed by a diamond mesh codend. We tested the size-selective performance of a new sorting section that comprised a sorting grid combined with a square mesh panel as a potential alternative for the grid sections currently in use. The new sorting section was shorter and therefore more maneuverable than the existing sorting grid sections. The investigation was carried out on cod and the bycatch species redfish. The grid was found to contribute to the largest proportion of fish release, and the release through the square mesh panel was low. But, the results showed that the grid was successful at guiding fish not escaping through the grid to a second selection process in the panel. However, the square mesh panel did not result on the intended release efficiency except for the smallest sizes of fish, most likely because the guiding angle of the grid and the square meshes in the panel used did not provide a suitable escape path for the desired size range of fish. Therefore, optimizing the mesh size/shape in the panel and/or the guiding angle for the grid potentially could lead to the desired selectivity pattern in the new sort- ing section. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Sistiaga, Manu Berrondo Herrmann, Bent Grimaldo, Eduardo Larsen, Roger B. Olsen, Leonore Brinkhof, Jesse Tatone, Ivan |
author_facet |
Sistiaga, Manu Berrondo Herrmann, Bent Grimaldo, Eduardo Larsen, Roger B. Olsen, Leonore Brinkhof, Jesse Tatone, Ivan |
author_sort |
Sistiaga, Manu Berrondo |
title |
Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries |
title_short |
Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries |
title_full |
Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries |
title_fullStr |
Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries |
title_full_unstemmed |
Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries |
title_sort |
combination of a sorting grid and a square mesh panel to optimize size selection in the north-east arctic cod (gadus morhua) and redfish (sebastes spp.) trawl fisheries |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2477336 https://doi.org/10.1093/icesjms/fsx231 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea Gadus morhua |
genre_facet |
Arctic cod Arctic Barents Sea Gadus morhua |
op_source |
12 ICES Journal of Marine Science |
op_relation |
Norges forskningsråd: 243627 ICES Journal of Marine Science. 2017, . urn:issn:1054-3139 http://hdl.handle.net/11250/2477336 https://doi.org/10.1093/icesjms/fsx231 cristin:1537307 |
op_rights |
Navngivelse-Ikkekommersiell-DelPåSammeVilkår 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-sa/4.0/deed.no The authors |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.1093/icesjms/fsx231 |
container_title |
ICES Journal of Marine Science |
container_volume |
75 |
container_issue |
3 |
container_start_page |
1105 |
op_container_end_page |
1116 |
_version_ |
1766304342041690112 |