The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches
The Nordmøre grid is regarded as an efficient bycatch-reducing device and is used in various shrimp trawl fisheries globally. However, in some shrimp fisheries, bycatch remains a problem that seriously impacts commercial trawl activities. This study tested and compared the performance of two version...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Canadian Science Publishing
2019
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Online Access: | http://dx.doi.org/10.1139/cjfas-2018-0069 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0069 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0069 |
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crcansciencepubl:10.1139/cjfas-2018-0069 2024-06-23T07:50:27+00:00 The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches Larsen, Roger B. Sistiaga, Manu Herrmann, Bent Brinkhof, Jesse Tatone, Ivan Santos, Juan 2019 http://dx.doi.org/10.1139/cjfas-2018-0069 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0069 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0069 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 76, issue 2, page 308-319 ISSN 0706-652X 1205-7533 journal-article 2019 crcansciencepubl https://doi.org/10.1139/cjfas-2018-0069 2024-05-24T13:05:53Z The Nordmøre grid is regarded as an efficient bycatch-reducing device and is used in various shrimp trawl fisheries globally. However, in some shrimp fisheries, bycatch remains a problem that seriously impacts commercial trawl activities. This study tested and compared the performance of two versions of the Nordmøre grid in the northeast Arctic deepwater (northern) shrimp (Pandalus borealis) fishery, a standard version with an operating angle of approximately 45° and a longer version of the grid (40% longer) with an operating angle of approximately 30°. The grid passage probability for the bycatch of juvenile cod (Gadus morhua), haddock (Melanogrammus aeglefinus), American plaice (Hippoglossoides platessoides), and redfish (Sebastes spp.) increased significantly for certain size ranges of fish when using the longer grid. The longer grid also resulted in a significant increase in grid passage probability for large shrimp. Previous studies have reported that a reduced operating angle can lead to a lower grid passage probability for bycatch fish species and shrimp; however, the results of the current study demonstrate that a longer Nordmøre grid more than compensates for the reduced operational angle. Article in Journal/Newspaper Arctic Gadus morhua northern shrimp Pandalus borealis Canadian Science Publishing Arctic Nordmøre ENVELOPE(8.500,8.500,63.000,63.000) Canadian Journal of Fisheries and Aquatic Sciences 76 2 308 319 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
The Nordmøre grid is regarded as an efficient bycatch-reducing device and is used in various shrimp trawl fisheries globally. However, in some shrimp fisheries, bycatch remains a problem that seriously impacts commercial trawl activities. This study tested and compared the performance of two versions of the Nordmøre grid in the northeast Arctic deepwater (northern) shrimp (Pandalus borealis) fishery, a standard version with an operating angle of approximately 45° and a longer version of the grid (40% longer) with an operating angle of approximately 30°. The grid passage probability for the bycatch of juvenile cod (Gadus morhua), haddock (Melanogrammus aeglefinus), American plaice (Hippoglossoides platessoides), and redfish (Sebastes spp.) increased significantly for certain size ranges of fish when using the longer grid. The longer grid also resulted in a significant increase in grid passage probability for large shrimp. Previous studies have reported that a reduced operating angle can lead to a lower grid passage probability for bycatch fish species and shrimp; however, the results of the current study demonstrate that a longer Nordmøre grid more than compensates for the reduced operational angle. |
format |
Article in Journal/Newspaper |
author |
Larsen, Roger B. Sistiaga, Manu Herrmann, Bent Brinkhof, Jesse Tatone, Ivan Santos, Juan |
spellingShingle |
Larsen, Roger B. Sistiaga, Manu Herrmann, Bent Brinkhof, Jesse Tatone, Ivan Santos, Juan The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches |
author_facet |
Larsen, Roger B. Sistiaga, Manu Herrmann, Bent Brinkhof, Jesse Tatone, Ivan Santos, Juan |
author_sort |
Larsen, Roger B. |
title |
The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches |
title_short |
The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches |
title_full |
The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches |
title_fullStr |
The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches |
title_full_unstemmed |
The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches |
title_sort |
effect of nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
http://dx.doi.org/10.1139/cjfas-2018-0069 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0069 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0069 |
long_lat |
ENVELOPE(8.500,8.500,63.000,63.000) |
geographic |
Arctic Nordmøre |
geographic_facet |
Arctic Nordmøre |
genre |
Arctic Gadus morhua northern shrimp Pandalus borealis |
genre_facet |
Arctic Gadus morhua northern shrimp Pandalus borealis |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 76, issue 2, page 308-319 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2018-0069 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
76 |
container_issue |
2 |
container_start_page |
308 |
op_container_end_page |
319 |
_version_ |
1802641342783815680 |