Does the efficiency of a counter-herding device depend on seabed contact?
Accepted manuscript version, licensed CC BY-NC-ND 4.0. To prevent unwanted fish bycatch from entering the trawl, we modified a counter-herding device, FLEXSELECT, developed for a Northeast Atlantic Nephrops ( Nephrops norvegicus ) trawl fishery. FLEXSELECT, which was designed to direct fish away fro...
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Online Access: | https://hdl.handle.net/10037/18806 https://doi.org/10.1016/j.fishres.2020.105686 |
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ftunivtroemsoe:oai:munin.uit.no:10037/18806 2023-05-15T16:19:12+02:00 Does the efficiency of a counter-herding device depend on seabed contact? Melli, Valentina Krag, Ludvig Ahm Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan 2020-07-06 https://hdl.handle.net/10037/18806 https://doi.org/10.1016/j.fishres.2020.105686 eng eng Elsevier Fisheries Research Melli V, Krag LA, Herrmann B, Karlsen JD, Feekings J. Does the efficiency of a counter-herding device depend on seabed contact?. Fisheries Research. 2020;230 FRIDAID 1819213 doi:10.1016/j.fishres.2020.105686 0165-7836 1872-6763 https://hdl.handle.net/10037/18806 embargoedAccess © 2020 Elsevier B.V. All rights reserved. VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.fishres.2020.105686 2021-06-25T17:57:32Z Accepted manuscript version, licensed CC BY-NC-ND 4.0. To prevent unwanted fish bycatch from entering the trawl, we modified a counter-herding device, FLEXSELECT, developed for a Northeast Atlantic Nephrops ( Nephrops norvegicus ) trawl fishery. FLEXSELECT, which was designed to direct fish away from the trawl by means of sweeping ropes in the herding area, has been shown to be highly effective on both roundfish and flatfish species. However, by adding sweeping elements we could be increasing the benthic impact of trawling. Therefore, in this study we investigated if the effect of FLEXSELECT can be maintained when raising the ropes off the seabed. A reduction in fish bycatch could still be achieved, but the effect of FLEXSELECT raised with respect to the previous design was significantly different for four of the seven species analysed. While for some species the effect was lower, it substantially increased for cod ( Gadus morhua ), making it highly relevant for the Nephrops fisheries, as well as for other fisheries in needs of avoiding cod catches. The results offer insights regarding species behavioural responses to FLEXSELECT raised , to be used for future developments of counter-herding devices in commercial fisheries without the addition of seabed impact to the baseline gears. Article in Journal/Newspaper Gadus morhua Northeast Atlantic University of Tromsø: Munin Open Research Archive Fisheries Research 230 105686 |
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 Melli, Valentina Krag, Ludvig Ahm Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan Does the efficiency of a counter-herding device depend on seabed contact? |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
Accepted manuscript version, licensed CC BY-NC-ND 4.0. To prevent unwanted fish bycatch from entering the trawl, we modified a counter-herding device, FLEXSELECT, developed for a Northeast Atlantic Nephrops ( Nephrops norvegicus ) trawl fishery. FLEXSELECT, which was designed to direct fish away from the trawl by means of sweeping ropes in the herding area, has been shown to be highly effective on both roundfish and flatfish species. However, by adding sweeping elements we could be increasing the benthic impact of trawling. Therefore, in this study we investigated if the effect of FLEXSELECT can be maintained when raising the ropes off the seabed. A reduction in fish bycatch could still be achieved, but the effect of FLEXSELECT raised with respect to the previous design was significantly different for four of the seven species analysed. While for some species the effect was lower, it substantially increased for cod ( Gadus morhua ), making it highly relevant for the Nephrops fisheries, as well as for other fisheries in needs of avoiding cod catches. The results offer insights regarding species behavioural responses to FLEXSELECT raised , to be used for future developments of counter-herding devices in commercial fisheries without the addition of seabed impact to the baseline gears. |
format |
Article in Journal/Newspaper |
author |
Melli, Valentina Krag, Ludvig Ahm Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan |
author_facet |
Melli, Valentina Krag, Ludvig Ahm Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan |
author_sort |
Melli, Valentina |
title |
Does the efficiency of a counter-herding device depend on seabed contact? |
title_short |
Does the efficiency of a counter-herding device depend on seabed contact? |
title_full |
Does the efficiency of a counter-herding device depend on seabed contact? |
title_fullStr |
Does the efficiency of a counter-herding device depend on seabed contact? |
title_full_unstemmed |
Does the efficiency of a counter-herding device depend on seabed contact? |
title_sort |
does the efficiency of a counter-herding device depend on seabed contact? |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/18806 https://doi.org/10.1016/j.fishres.2020.105686 |
genre |
Gadus morhua Northeast Atlantic |
genre_facet |
Gadus morhua Northeast Atlantic |
op_relation |
Fisheries Research Melli V, Krag LA, Herrmann B, Karlsen JD, Feekings J. Does the efficiency of a counter-herding device depend on seabed contact?. Fisheries Research. 2020;230 FRIDAID 1819213 doi:10.1016/j.fishres.2020.105686 0165-7836 1872-6763 https://hdl.handle.net/10037/18806 |
op_rights |
embargoedAccess © 2020 Elsevier B.V. All rights reserved. |
op_doi |
https://doi.org/10.1016/j.fishres.2020.105686 |
container_title |
Fisheries Research |
container_volume |
230 |
container_start_page |
105686 |
_version_ |
1766005558201024512 |