Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua)
Preprint version available at https://doi.org/10.1101/372581 . Trawl-caught Atlantic cod ( Gadus morhua ) often yield high variable fillet quality potentially related to capture stress. To investigate mechanisms involved in causing variable quality, commercial-sized (size 3.5±0.9 kg) Atlantic cod we...
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ftunivtroemsoe:oai:munin.uit.no:10037/14402 2023-05-15T15:26:53+02:00 Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) Svalheim, Ragnhild Aven Aas-Hansen, Øyvind Heia, Karsten Drangsholt-Karlsson, Anders Olsen, Stein Harris Johnsen, Helge K. 2018-07-19 https://hdl.handle.net/10037/14402 https://doi.org/10.1101/372581 eng eng PLoS ONE info:eu-repo/grantAgreement/RCN/SFI/203477/Norway/Centre for Research-based Innovation in Sustainable Fish Capture and Processing Technology/CRISP/ Svalheim, R.A., Aas-Hansen, Ø., Heia, K., Drangsholt-Karlsson, A., Olsen, S.H. & Johnsen, H.K. (2019). Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod ( Gadus morhua ). PLoS ONE . FRIDAID 1649219 doi:10.1101/372581 1932-6203 https://hdl.handle.net/10037/14402 openAccess VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Preprint Manuskript 2018 ftunivtroemsoe https://doi.org/10.1101/372581 2021-06-25T17:56:16Z Preprint version available at https://doi.org/10.1101/372581 . Trawl-caught Atlantic cod ( Gadus morhua ) often yield high variable fillet quality potentially related to capture stress. To investigate mechanisms involved in causing variable quality, commercial-sized (size 3.5±0.9 kg) Atlantic cod were swum to exhaustion in a large swim tunnel and exposed to extreme crowding (736±50 kg m3) for 0, 1 or 3 hours in an experimental cod-end. Further, fish were recuperated for 0, 3 or 6 hours in a net pen prior to slaughter to assess the possibility to quickly reverse the reduced quality. We found that exhaustive swimming and crowding were associated with increased metabolic stress, as indicated by increased plasma cortisol, blood lactate and blood haematocrit levels, and a reduced quality of the fillets in terms of increased visual redness and a drop in muscle pH. The observed negative effects of exhaustive swimming and crowding were only to a small degree reversed within 6 hours of recuperation. The results from this study suggest that exhaustive swimming followed by extreme crowding is a likely significant contributor to the variable fillet quality seen in trawl-caught Atlantic cod, and that recuperation for more than six hours may be required to reverse these effects. Article in Journal/Newspaper atlantic cod Gadus morhua University of Tromsø: Munin Open Research Archive Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) |
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 Svalheim, Ragnhild Aven Aas-Hansen, Øyvind Heia, Karsten Drangsholt-Karlsson, Anders Olsen, Stein Harris Johnsen, Helge K. Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
Preprint version available at https://doi.org/10.1101/372581 . Trawl-caught Atlantic cod ( Gadus morhua ) often yield high variable fillet quality potentially related to capture stress. To investigate mechanisms involved in causing variable quality, commercial-sized (size 3.5±0.9 kg) Atlantic cod were swum to exhaustion in a large swim tunnel and exposed to extreme crowding (736±50 kg m3) for 0, 1 or 3 hours in an experimental cod-end. Further, fish were recuperated for 0, 3 or 6 hours in a net pen prior to slaughter to assess the possibility to quickly reverse the reduced quality. We found that exhaustive swimming and crowding were associated with increased metabolic stress, as indicated by increased plasma cortisol, blood lactate and blood haematocrit levels, and a reduced quality of the fillets in terms of increased visual redness and a drop in muscle pH. The observed negative effects of exhaustive swimming and crowding were only to a small degree reversed within 6 hours of recuperation. The results from this study suggest that exhaustive swimming followed by extreme crowding is a likely significant contributor to the variable fillet quality seen in trawl-caught Atlantic cod, and that recuperation for more than six hours may be required to reverse these effects. |
format |
Article in Journal/Newspaper |
author |
Svalheim, Ragnhild Aven Aas-Hansen, Øyvind Heia, Karsten Drangsholt-Karlsson, Anders Olsen, Stein Harris Johnsen, Helge K. |
author_facet |
Svalheim, Ragnhild Aven Aas-Hansen, Øyvind Heia, Karsten Drangsholt-Karlsson, Anders Olsen, Stein Harris Johnsen, Helge K. |
author_sort |
Svalheim, Ragnhild Aven |
title |
Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) |
title_short |
Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) |
title_full |
Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) |
title_fullStr |
Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) |
title_full_unstemmed |
Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) |
title_sort |
simulated trawling: exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught atlantic cod (gadus morhua) |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/14402 https://doi.org/10.1101/372581 |
long_lat |
ENVELOPE(-85.633,-85.633,-78.617,-78.617) |
geographic |
Slaughter |
geographic_facet |
Slaughter |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
PLoS ONE info:eu-repo/grantAgreement/RCN/SFI/203477/Norway/Centre for Research-based Innovation in Sustainable Fish Capture and Processing Technology/CRISP/ Svalheim, R.A., Aas-Hansen, Ø., Heia, K., Drangsholt-Karlsson, A., Olsen, S.H. & Johnsen, H.K. (2019). Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod ( Gadus morhua ). PLoS ONE . FRIDAID 1649219 doi:10.1101/372581 1932-6203 https://hdl.handle.net/10037/14402 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1101/372581 |
_version_ |
1766357355531862016 |