Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl
Accepted manuscript version, licensed CC BY-NC-ND 4.0. Published version available at https://doi.org/10.1016/j.fishres.2018.05.021 . The dense aggregations of Northeast Atlantic cod (Gadus morhua) in the Barents Sea have led to a new fishing practice termed “buffer towing.” In this fishery, many tr...
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Online Access: | https://hdl.handle.net/10037/14598 https://doi.org/10.1016/j.fishres.2018.05.021 |
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ftunivtroemsoe:oai:munin.uit.no:10037/14598 2023-05-15T15:27:25+02:00 Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl Brinkhof, Jesse Larsen, Roger B. Herrmann, Bent Olsen, Stein Harris 2018-05-28 https://hdl.handle.net/10037/14598 https://doi.org/10.1016/j.fishres.2018.05.021 eng eng Elsevier Fisheries Research info:eu-repo/grantAgreement/RCN/SFI/203477/Norway/Centre for Research-based Innovation in Sustainable Fish Capture and Processing Technology/CRISP/ Brinkhof, J., Larsen, R.B., Herrmann, B. & Olsen, S.H. (2018). Assessing the impact of buffer towing on the quality of Northeast Atlantic cod ( Gadus morhua ) caught with a bottom trawl. Fisheries Research, 206 , 209-219. https://doi.org/10.1016/j.fishres.2018.05.021 FRIDAID 1592559 doi:10.1016/j.fishres.2018.05.021 0165-7836 1872-6763 https://hdl.handle.net/10037/14598 openAccess VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Buffer towing Cod Fish quality Bottom trawl Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1016/j.fishres.2018.05.021 2021-06-25T17:56:17Z Accepted manuscript version, licensed CC BY-NC-ND 4.0. Published version available at https://doi.org/10.1016/j.fishres.2018.05.021 . The dense aggregations of Northeast Atlantic cod (Gadus morhua) in the Barents Sea have led to a new fishing practice termed “buffer towing.” In this fishery, many trawlers redeploy the trawl directly after taking the catch onboard in an attempt to secure a continuous supply of fish and avoid any unnecessary stops during processing. If the approximate desired amount of fish is caught or exceeded before the catch from the previous haul is processed, the trawl is lifted off the seabed and towed at a given depth at low speed, usually ∼1–2 knots, until the production capacity of the onboard factory is restored. Both researchers and fishermen onboard trawlers believe that buffer towing has a negative impact on fish quality, as indicated by increased frequency of gear marks and dead fish, poorer exsanguination, ecchymosis, skin abrasion, fillet gaping, and fillet redness. However, the effect that buffer towing has on fish quality has not been scientifically evaluated. The aim of this study was to document the effects of buffer towing on fish quality. The quality was assessed using two different indexes, one for whole cod and one for cod fillets. The results proved that buffer towing has a negative impact on fish quality. Specifically, cod subjected to buffer towing, in contrast to direct haul-back, had an increased relative probability of 371% for poor exsanguination and an increased relative probability of 209% for fillet redness. Furthermore, combining scores of the different quality categories within the indexes (e.g., gear marks, ecchymosis, poor exsanguination, and skin abrasion) proved a significant reduction in the quality of cod subjected to buffer towing. Article in Journal/Newspaper atlantic cod Barents Sea Gadus morhua Northeast Atlantic University of Tromsø: Munin Open Research Archive Barents Sea Fisheries Research 206 209 219 |
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 Buffer towing Cod Fish quality Bottom trawl |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Buffer towing Cod Fish quality Bottom trawl Brinkhof, Jesse Larsen, Roger B. Herrmann, Bent Olsen, Stein Harris Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Buffer towing Cod Fish quality Bottom trawl |
description |
Accepted manuscript version, licensed CC BY-NC-ND 4.0. Published version available at https://doi.org/10.1016/j.fishres.2018.05.021 . The dense aggregations of Northeast Atlantic cod (Gadus morhua) in the Barents Sea have led to a new fishing practice termed “buffer towing.” In this fishery, many trawlers redeploy the trawl directly after taking the catch onboard in an attempt to secure a continuous supply of fish and avoid any unnecessary stops during processing. If the approximate desired amount of fish is caught or exceeded before the catch from the previous haul is processed, the trawl is lifted off the seabed and towed at a given depth at low speed, usually ∼1–2 knots, until the production capacity of the onboard factory is restored. Both researchers and fishermen onboard trawlers believe that buffer towing has a negative impact on fish quality, as indicated by increased frequency of gear marks and dead fish, poorer exsanguination, ecchymosis, skin abrasion, fillet gaping, and fillet redness. However, the effect that buffer towing has on fish quality has not been scientifically evaluated. The aim of this study was to document the effects of buffer towing on fish quality. The quality was assessed using two different indexes, one for whole cod and one for cod fillets. The results proved that buffer towing has a negative impact on fish quality. Specifically, cod subjected to buffer towing, in contrast to direct haul-back, had an increased relative probability of 371% for poor exsanguination and an increased relative probability of 209% for fillet redness. Furthermore, combining scores of the different quality categories within the indexes (e.g., gear marks, ecchymosis, poor exsanguination, and skin abrasion) proved a significant reduction in the quality of cod subjected to buffer towing. |
format |
Article in Journal/Newspaper |
author |
Brinkhof, Jesse Larsen, Roger B. Herrmann, Bent Olsen, Stein Harris |
author_facet |
Brinkhof, Jesse Larsen, Roger B. Herrmann, Bent Olsen, Stein Harris |
author_sort |
Brinkhof, Jesse |
title |
Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl |
title_short |
Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl |
title_full |
Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl |
title_fullStr |
Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl |
title_full_unstemmed |
Assessing the impact of buffer towing on the quality of Northeast Atlantic cod (Gadus morhua) caught with a bottom trawl |
title_sort |
assessing the impact of buffer towing on the quality of northeast atlantic cod (gadus morhua) caught with a bottom trawl |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/14598 https://doi.org/10.1016/j.fishres.2018.05.021 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
atlantic cod Barents Sea Gadus morhua Northeast Atlantic |
genre_facet |
atlantic cod Barents Sea Gadus morhua Northeast Atlantic |
op_relation |
Fisheries Research info:eu-repo/grantAgreement/RCN/SFI/203477/Norway/Centre for Research-based Innovation in Sustainable Fish Capture and Processing Technology/CRISP/ Brinkhof, J., Larsen, R.B., Herrmann, B. & Olsen, S.H. (2018). Assessing the impact of buffer towing on the quality of Northeast Atlantic cod ( Gadus morhua ) caught with a bottom trawl. Fisheries Research, 206 , 209-219. https://doi.org/10.1016/j.fishres.2018.05.021 FRIDAID 1592559 doi:10.1016/j.fishres.2018.05.021 0165-7836 1872-6763 https://hdl.handle.net/10037/14598 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.fishres.2018.05.021 |
container_title |
Fisheries Research |
container_volume |
206 |
container_start_page |
209 |
op_container_end_page |
219 |
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1766357862095781888 |