Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery
The aim of this study was to compare the catch quality of Northeast Atlantic cod (Gadus morhua) in the Barents Sea bottom trawl fishery caught using the conventional configuration (a sorting grid followed by a diamond mesh (T0) codend) and a T90° turned mesh codend (T90) without a grid. Twenty hauls...
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Online Access: | https://hdl.handle.net/11250/2980819 https://doi.org/10.1016/j.fishres.2022.106277 |
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ftnofima:oai:nofima.brage.unit.no:11250/2980819 2023-05-15T15:27:39+02:00 Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery Jensen, Tonje Kristin Brinkhof, Jesse Lindberg, Stein-Kato Tobiassen, Torbjørn Inge Heia, Karsten Olsen, Stein Harris Larsen, Roger B. Esaiassen, Margrethe 2022 application/pdf https://hdl.handle.net/11250/2980819 https://doi.org/10.1016/j.fishres.2022.106277 eng eng urn:issn:0165-7836 https://hdl.handle.net/11250/2980819 https://doi.org/10.1016/j.fishres.2022.106277 cristin:2003876 250 Fisheries Research Peer reviewed Journal article 2022 ftnofima https://doi.org/10.1016/j.fishres.2022.106277 2022-11-18T06:51:17Z The aim of this study was to compare the catch quality of Northeast Atlantic cod (Gadus morhua) in the Barents Sea bottom trawl fishery caught using the conventional configuration (a sorting grid followed by a diamond mesh (T0) codend) and a T90° turned mesh codend (T90) without a grid. Twenty hauls were conducted, consisting of 10 hauls with the conventional configuration and 10 hauls with the T90-codend. The catch quality was assessed using the catch-damages-index (CDI) and a newly developed method using VIS/NIR hyperspectral imaging to estimate the residual blood abundances in the fish muscle. The probability of obtaining fish with no damage was 23.4% (CI: 16.3–31.1%) for cod captured by the conventional configuration, and 21.2% (CI: 15.4–27.2%) for cod captured by the T90-codend. The average blood abundance (in arbitrary unit) was 0.86 (CI: 0.85–0.87) for cod captured by the conventional configuration and 0.88 (CI: 0.87–0.88) for cod captured by the T90-codend. Catch quality of the hauls obtained using the two gears did not differ significantly in terms of catch damage or residual blood levels in the cod. Hence, this study demonstrated that T90-codends do not compromise catch quality compared to regular diamond meshed codends. publishedVersion Article in Journal/Newspaper atlantic cod Barents Sea Gadus morhua Northeast Atlantic Nofima Knowledge Archive (Brage) Barents Sea Fisheries Research 250 106277 |
institution |
Open Polar |
collection |
Nofima Knowledge Archive (Brage) |
op_collection_id |
ftnofima |
language |
English |
description |
The aim of this study was to compare the catch quality of Northeast Atlantic cod (Gadus morhua) in the Barents Sea bottom trawl fishery caught using the conventional configuration (a sorting grid followed by a diamond mesh (T0) codend) and a T90° turned mesh codend (T90) without a grid. Twenty hauls were conducted, consisting of 10 hauls with the conventional configuration and 10 hauls with the T90-codend. The catch quality was assessed using the catch-damages-index (CDI) and a newly developed method using VIS/NIR hyperspectral imaging to estimate the residual blood abundances in the fish muscle. The probability of obtaining fish with no damage was 23.4% (CI: 16.3–31.1%) for cod captured by the conventional configuration, and 21.2% (CI: 15.4–27.2%) for cod captured by the T90-codend. The average blood abundance (in arbitrary unit) was 0.86 (CI: 0.85–0.87) for cod captured by the conventional configuration and 0.88 (CI: 0.87–0.88) for cod captured by the T90-codend. Catch quality of the hauls obtained using the two gears did not differ significantly in terms of catch damage or residual blood levels in the cod. Hence, this study demonstrated that T90-codends do not compromise catch quality compared to regular diamond meshed codends. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Jensen, Tonje Kristin Brinkhof, Jesse Lindberg, Stein-Kato Tobiassen, Torbjørn Inge Heia, Karsten Olsen, Stein Harris Larsen, Roger B. Esaiassen, Margrethe |
spellingShingle |
Jensen, Tonje Kristin Brinkhof, Jesse Lindberg, Stein-Kato Tobiassen, Torbjørn Inge Heia, Karsten Olsen, Stein Harris Larsen, Roger B. Esaiassen, Margrethe Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery |
author_facet |
Jensen, Tonje Kristin Brinkhof, Jesse Lindberg, Stein-Kato Tobiassen, Torbjørn Inge Heia, Karsten Olsen, Stein Harris Larsen, Roger B. Esaiassen, Margrethe |
author_sort |
Jensen, Tonje Kristin |
title |
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery |
title_short |
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery |
title_full |
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery |
title_fullStr |
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery |
title_full_unstemmed |
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery |
title_sort |
effect of the t90-codend on the catch quality of cod (gadus morhua) compared to the conventional codend configuration in the barents sea bottom trawl fishery |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/2980819 https://doi.org/10.1016/j.fishres.2022.106277 |
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_source |
250 Fisheries Research |
op_relation |
urn:issn:0165-7836 https://hdl.handle.net/11250/2980819 https://doi.org/10.1016/j.fishres.2022.106277 cristin:2003876 |
op_doi |
https://doi.org/10.1016/j.fishres.2022.106277 |
container_title |
Fisheries Research |
container_volume |
250 |
container_start_page |
106277 |
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1766358070151086080 |