Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid
Source at https://doi.org/10.1371/journal.pone.0222391. Shrimp trawlers in the Barents Sea use a Nordmøre sorting grid ahead of a small-mesh codend to avoid bycatch while catching shrimps efficiently. However, small fish can still pass through the grid to enter the codend, which increases their risk...
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Online Access: | https://hdl.handle.net/10037/16404 https://doi.org/10.1371/journal.pone.0222391 |
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ftunivtroemsoe:oai:munin.uit.no:10037/16404 2023-05-15T15:39:07+02:00 Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid Sistiaga, Manu Berrondo Herrmann, Bent Larsen, Roger B. Brinkhof, Jesse 2019-09-12 https://hdl.handle.net/10037/16404 https://doi.org/10.1371/journal.pone.0222391 eng eng Public Library of Science PLOS ONE Sistiaga, M., Herrmann, B., Larsen, R.B. & Brinkhof, J. (2019). Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid. PLOS ONE, 14 (9): e0222391. https://doi.org/10.1371/journal.pone.0222391 FRIDAID 1734070 doi:10.1371/journal.pone.0222391 1932-6203 https://hdl.handle.net/10037/16404 openAccess VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed 2019 ftunivtroemsoe https://doi.org/10.1371/journal.pone.0222391 2021-06-25T17:56:52Z Source at https://doi.org/10.1371/journal.pone.0222391. Shrimp trawlers in the Barents Sea use a Nordmøre sorting grid ahead of a small-mesh codend to avoid bycatch while catching shrimps efficiently. However, small fish can still pass through the grid to enter the codend, which increases their risk of being retained. In this study, we quantified the selectivity of a standard Nordmøre grid used together with one of two different codend designs, namely a diamond mesh codend with square mesh panels and a codend with a square mesh sorting cone section, for deep-water shrimp ( Pandalus borealis ), redfish ( Sebastes spp.), and American plaice ( Hippoglossoides platessoides ). For the first time, the selective properties of these two alternative designs were estimated and compared to those of a Nordmøre grid used together with a 35-mm diamond mesh codend, which is the compulsory gear used in the fishery today. With this traditional codend, the size selectivity of both bycatch species showed the expected characteristic bell-shaped size selection pattern, with low retention probability of very small fish and bigger fish but With high retention probability of certain sizes of juveniles. Using the square mesh sorting cone significantly reduced the maximum retention risk of redfish. The maximum retention with the diamond mesh codend with square mesh panels was estimated to be 14% lower than that of the traditional codend, but the difference was not statistically significant. The two alternative codend designs did not result in any significant reduction in bycatch of American plaice. Article in Journal/Newspaper Barents Sea Pandalus borealis University of Tromsø: Munin Open Research Archive Barents Sea Nordmøre ENVELOPE(8.500,8.500,63.000,63.000) PLOS ONE 14 9 e0222391 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Sistiaga, Manu Berrondo Herrmann, Bent Larsen, Roger B. Brinkhof, Jesse Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
Source at https://doi.org/10.1371/journal.pone.0222391. Shrimp trawlers in the Barents Sea use a Nordmøre sorting grid ahead of a small-mesh codend to avoid bycatch while catching shrimps efficiently. However, small fish can still pass through the grid to enter the codend, which increases their risk of being retained. In this study, we quantified the selectivity of a standard Nordmøre grid used together with one of two different codend designs, namely a diamond mesh codend with square mesh panels and a codend with a square mesh sorting cone section, for deep-water shrimp ( Pandalus borealis ), redfish ( Sebastes spp.), and American plaice ( Hippoglossoides platessoides ). For the first time, the selective properties of these two alternative designs were estimated and compared to those of a Nordmøre grid used together with a 35-mm diamond mesh codend, which is the compulsory gear used in the fishery today. With this traditional codend, the size selectivity of both bycatch species showed the expected characteristic bell-shaped size selection pattern, with low retention probability of very small fish and bigger fish but With high retention probability of certain sizes of juveniles. Using the square mesh sorting cone significantly reduced the maximum retention risk of redfish. The maximum retention with the diamond mesh codend with square mesh panels was estimated to be 14% lower than that of the traditional codend, but the difference was not statistically significant. The two alternative codend designs did not result in any significant reduction in bycatch of American plaice. |
format |
Article in Journal/Newspaper |
author |
Sistiaga, Manu Berrondo Herrmann, Bent Larsen, Roger B. Brinkhof, Jesse |
author_facet |
Sistiaga, Manu Berrondo Herrmann, Bent Larsen, Roger B. Brinkhof, Jesse |
author_sort |
Sistiaga, Manu Berrondo |
title |
Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid |
title_short |
Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid |
title_full |
Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid |
title_fullStr |
Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid |
title_full_unstemmed |
Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid |
title_sort |
quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a nordmøre grid |
publisher |
Public Library of Science |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/16404 https://doi.org/10.1371/journal.pone.0222391 |
long_lat |
ENVELOPE(8.500,8.500,63.000,63.000) |
geographic |
Barents Sea Nordmøre |
geographic_facet |
Barents Sea Nordmøre |
genre |
Barents Sea Pandalus borealis |
genre_facet |
Barents Sea Pandalus borealis |
op_relation |
PLOS ONE Sistiaga, M., Herrmann, B., Larsen, R.B. & Brinkhof, J. (2019). Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid. PLOS ONE, 14 (9): e0222391. https://doi.org/10.1371/journal.pone.0222391 FRIDAID 1734070 doi:10.1371/journal.pone.0222391 1932-6203 https://hdl.handle.net/10037/16404 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0222391 |
container_title |
PLOS ONE |
container_volume |
14 |
container_issue |
9 |
container_start_page |
e0222391 |
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1766370565428346880 |