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...
Published in: | Fisheries Research |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/24633 https://doi.org/10.1016/j.fishres.2022.106277 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/24633 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/24633 2023-05-15T15:27:38+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 2022-02-18 https://hdl.handle.net/10037/24633 https://doi.org/10.1016/j.fishres.2022.106277 eng eng Elsevier Jensen, T.K. (2022). Catch quality of Northeast Atlantic cod ( Gadus morhua ) caught by bottom trawl and gillnet – Effects of changes in gear design and fishing practices. (Doctoral thesis). https://hdl.handle.net/10037/26896 . Fisheries Research Jensen, Brinkhof, Lindberg, Tobiassen, Heia, Olsen, Larsen, Esaiassen. 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. Fisheries Research. 2022;250 FRIDAID 2003876 doi:10.1016/j.fishres.2022.106277 0165-7836 1872-6763 https://hdl.handle.net/10037/24633 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.1016/j.fishres.2022.106277 2022-09-28T23:00:52Z 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. Article in Journal/Newspaper atlantic cod Barents Sea Gadus morhua Northeast Atlantic University of Tromsø: Munin Open Research Archive Barents Sea Fisheries Research 250 106277 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
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. |
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 |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/24633 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_relation |
Jensen, T.K. (2022). Catch quality of Northeast Atlantic cod ( Gadus morhua ) caught by bottom trawl and gillnet – Effects of changes in gear design and fishing practices. (Doctoral thesis). https://hdl.handle.net/10037/26896 . Fisheries Research Jensen, Brinkhof, Lindberg, Tobiassen, Heia, Olsen, Larsen, Esaiassen. 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. Fisheries Research. 2022;250 FRIDAID 2003876 doi:10.1016/j.fishres.2022.106277 0165-7836 1872-6763 https://hdl.handle.net/10037/24633 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1016/j.fishres.2022.106277 |
container_title |
Fisheries Research |
container_volume |
250 |
container_start_page |
106277 |
_version_ |
1766358063120384000 |