Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling?
The Nordmøre grid is widely used in shrimp trawls to reduce the bycatch of fish species. However, small-sized fish species and juveniles still pass through the grid and enter the codend, along with the targeted shrimp. This bycatch of small fish has a negative impact on the ecosystem due to increase...
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Online Access: | http://hdl.handle.net/11250/2594789 https://doi.org/10.1016/j.fishres.2018.03.023 |
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ftsintef:oai:sintef.brage.unit.no:11250/2594789 2023-05-15T15:39:06+02:00 Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling? Larsen, Roger B. Herrmann, Bent Sistiaga, Manu Berrondo Brcic, Jure Brinkhof, Jesse Tatone, Ivan 2018-08 application/pdf http://hdl.handle.net/11250/2594789 https://doi.org/10.1016/j.fishres.2018.03.023 eng eng Fiskeri- og havbruksnæringens forskningsfond: 901303 Fisheries Research. 2018, 204 441-447. urn:issn:0165-7836 http://hdl.handle.net/11250/2594789 https://doi.org/10.1016/j.fishres.2018.03.023 cristin:1576691 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 441-447 204 Fisheries Research Bottom trawl Bycatch LEDs Nordmøre grid Pandalus borealis Size selectivity VDP::Fangst: 925 VDP::Catch: 925 Journal article Peer reviewed 2018 ftsintef https://doi.org/10.1016/j.fishres.2018.03.023 2021-08-04T11:59:29Z The Nordmøre grid is widely used in shrimp trawls to reduce the bycatch of fish species. However, small-sized fish species and juveniles still pass through the grid and enter the codend, along with the targeted shrimp. This bycatch of small fish has a negative impact on the ecosystem due to increased fish mortality, and leads to additional sorting work onboard. Some small-sized fish that enter the trawl avoid entering the codend by escaping through the outlet above the grid, without making contact with the grid itself. Design changes that promote this behavior could potentially reduce bycatch in shrimp trawl fisheries. Light-emitting diodes (LEDs) mounted around the escape outlet have previously been found to have either a negative effect, or no effect at all, on fish bycatch species. This study investigates the effect of mounting green LEDs on the lower part of a Nordmøre grid, to determine if their presence would encourage bycatch fish to rise towards the escape outlet prior to contacting the grid. Experimental fishing trials were conducted to assess the size selective properties of a 19 mm bar spaced Nordmøre grid with and without LEDs, mounted on a bottom trawl targeting Deep-water shrimp (Pandalus borealis). For the four bycatch species investigated, 51–100% of small fish passed through the Nordmøre grid. The addition of green LEDs to the Nordmøre grid did not significantly affect the escape probability or the size selectivity of any of the investigated species. Very few Deep-water shrimp were found to escape through the escape outlet independent of the presence of the LEDs mounted on the grid acceptedVersion Article in Journal/Newspaper Barents Sea Pandalus borealis SINTEF Open (Brage) Barents Sea Nordmøre ENVELOPE(8.500,8.500,63.000,63.000) Fisheries Research 204 441 447 |
institution |
Open Polar |
collection |
SINTEF Open (Brage) |
op_collection_id |
ftsintef |
language |
English |
topic |
Bottom trawl Bycatch LEDs Nordmøre grid Pandalus borealis Size selectivity VDP::Fangst: 925 VDP::Catch: 925 |
spellingShingle |
Bottom trawl Bycatch LEDs Nordmøre grid Pandalus borealis Size selectivity VDP::Fangst: 925 VDP::Catch: 925 Larsen, Roger B. Herrmann, Bent Sistiaga, Manu Berrondo Brcic, Jure Brinkhof, Jesse Tatone, Ivan Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling? |
topic_facet |
Bottom trawl Bycatch LEDs Nordmøre grid Pandalus borealis Size selectivity VDP::Fangst: 925 VDP::Catch: 925 |
description |
The Nordmøre grid is widely used in shrimp trawls to reduce the bycatch of fish species. However, small-sized fish species and juveniles still pass through the grid and enter the codend, along with the targeted shrimp. This bycatch of small fish has a negative impact on the ecosystem due to increased fish mortality, and leads to additional sorting work onboard. Some small-sized fish that enter the trawl avoid entering the codend by escaping through the outlet above the grid, without making contact with the grid itself. Design changes that promote this behavior could potentially reduce bycatch in shrimp trawl fisheries. Light-emitting diodes (LEDs) mounted around the escape outlet have previously been found to have either a negative effect, or no effect at all, on fish bycatch species. This study investigates the effect of mounting green LEDs on the lower part of a Nordmøre grid, to determine if their presence would encourage bycatch fish to rise towards the escape outlet prior to contacting the grid. Experimental fishing trials were conducted to assess the size selective properties of a 19 mm bar spaced Nordmøre grid with and without LEDs, mounted on a bottom trawl targeting Deep-water shrimp (Pandalus borealis). For the four bycatch species investigated, 51–100% of small fish passed through the Nordmøre grid. The addition of green LEDs to the Nordmøre grid did not significantly affect the escape probability or the size selectivity of any of the investigated species. Very few Deep-water shrimp were found to escape through the escape outlet independent of the presence of the LEDs mounted on the grid acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Larsen, Roger B. Herrmann, Bent Sistiaga, Manu Berrondo Brcic, Jure Brinkhof, Jesse Tatone, Ivan |
author_facet |
Larsen, Roger B. Herrmann, Bent Sistiaga, Manu Berrondo Brcic, Jure Brinkhof, Jesse Tatone, Ivan |
author_sort |
Larsen, Roger B. |
title |
Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling? |
title_short |
Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling? |
title_full |
Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling? |
title_fullStr |
Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling? |
title_full_unstemmed |
Could green artificial light reduce bycatch during Barents Sea Deep-water shrimp trawling? |
title_sort |
could green artificial light reduce bycatch during barents sea deep-water shrimp trawling? |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2594789 https://doi.org/10.1016/j.fishres.2018.03.023 |
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_source |
441-447 204 Fisheries Research |
op_relation |
Fiskeri- og havbruksnæringens forskningsfond: 901303 Fisheries Research. 2018, 204 441-447. urn:issn:0165-7836 http://hdl.handle.net/11250/2594789 https://doi.org/10.1016/j.fishres.2018.03.023 cristin:1576691 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.fishres.2018.03.023 |
container_title |
Fisheries Research |
container_volume |
204 |
container_start_page |
441 |
op_container_end_page |
447 |
_version_ |
1766370551598678016 |