Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock
This is the published version of the following article: Larsen, R.B., Herrmann, B., Brinkhof. J., Grimaldo, E., Sistiaga, M.B. & Tatone, I. (2018). Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock. Marine and Coastal Fisheries , 10(5). https://do...
Published in: | Marine and Coastal Fisheries |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Taylor & Francis Open
2018
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/13988 https://doi.org/10.1002/mcf2.10048 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/13988 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/13988 2023-05-15T15:27:48+02:00 Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock Larsen, Roger B. Herrmann, Bent Brinkhof, Jesse Grimaldo, Eduardo Sistiaga, Manu Berrondo Tatone, Ivan 2018-10-10 https://hdl.handle.net/10037/13988 https://doi.org/10.1002/mcf2.10048 eng eng Taylor & Francis Open Marine and Coastal Fisheries info:eu-repo/grantAgreement/RCN/MAROFF-2/216423/Norway/DEVELOPMENT OF MULTIRIG SEMI-PELAGIC TRAWLING// Larsen, R.B., Herrmann, B., Brinkhof. J., Grimaldo, E., Sistiaga, M.B. & Tatone, I. (2018). Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock. Marine and Coastal Fisheries, 10(5). https://doi.org/10.1002/mcf2.10048 FRIDAID 1619674 doi:10.1002/mcf2.10048 1942-5120 https://hdl.handle.net/10037/13988 openAccess VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1002/mcf2.10048 2021-06-25T17:56:09Z This is the published version of the following article: Larsen, R.B., Herrmann, B., Brinkhof. J., Grimaldo, E., Sistiaga, M.B. & Tatone, I. (2018). Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock. Marine and Coastal Fisheries , 10(5). https://doi.org/10.1002/mcf2.10048. Source at https://doi.org/10.1002/mcf2.10048 . The catch efficiency of two types of groundgear—a conventional rockhopper and a new type of groundgear called the semicircular spreading gear (SCSG)—was investigated through experimental fishing for Haddock Melanogrammus aeglefinus conducted in the Barents Sea. A retainer bag was attached behind the footrope of the trawl, and the number of fish that were overrun by the trawl was compared with the catch in the trawl cod end. The catch efficiency increased slightly for larger Haddock for both groundgears. The SCSG was found to have a significantly higher catch efficiency than the conventional rockhopper groundgear. The estimated improvement in catch efficiency varied between 4.5% and 12.3%, with an equivalent reduction in escape rate underneath the groundgear of more than 70%. The rockhopper groundgear can have a catch efficiency as low as 76%, corresponding with values reported in previous studies. Average catch efficiency for the rockhopper gear was significantly lower during the night in comparison with the daytime. No such difference was found with the SCSG. The SCSG is more efficient for catching Haddock, and it is lighter than the rockhopper groundgear. Both are important factors in reducing seabed impact and fuel consumption. When compared to results of a similar study on Atlantic Cod Gadus morhua, we found that in general, both groundgears had a greater catch efficiency for Haddock, which accords with differences in behavior between the two species. Article in Journal/Newspaper atlantic cod Barents Sea Gadus morhua University of Tromsø: Munin Open Research Archive Barents Sea Marine and Coastal Fisheries 10 5 493 507 |
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 Larsen, Roger B. Herrmann, Bent Brinkhof, Jesse Grimaldo, Eduardo Sistiaga, Manu Berrondo Tatone, Ivan Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
This is the published version of the following article: Larsen, R.B., Herrmann, B., Brinkhof. J., Grimaldo, E., Sistiaga, M.B. & Tatone, I. (2018). Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock. Marine and Coastal Fisheries , 10(5). https://doi.org/10.1002/mcf2.10048. Source at https://doi.org/10.1002/mcf2.10048 . The catch efficiency of two types of groundgear—a conventional rockhopper and a new type of groundgear called the semicircular spreading gear (SCSG)—was investigated through experimental fishing for Haddock Melanogrammus aeglefinus conducted in the Barents Sea. A retainer bag was attached behind the footrope of the trawl, and the number of fish that were overrun by the trawl was compared with the catch in the trawl cod end. The catch efficiency increased slightly for larger Haddock for both groundgears. The SCSG was found to have a significantly higher catch efficiency than the conventional rockhopper groundgear. The estimated improvement in catch efficiency varied between 4.5% and 12.3%, with an equivalent reduction in escape rate underneath the groundgear of more than 70%. The rockhopper groundgear can have a catch efficiency as low as 76%, corresponding with values reported in previous studies. Average catch efficiency for the rockhopper gear was significantly lower during the night in comparison with the daytime. No such difference was found with the SCSG. The SCSG is more efficient for catching Haddock, and it is lighter than the rockhopper groundgear. Both are important factors in reducing seabed impact and fuel consumption. When compared to results of a similar study on Atlantic Cod Gadus morhua, we found that in general, both groundgears had a greater catch efficiency for Haddock, which accords with differences in behavior between the two species. |
format |
Article in Journal/Newspaper |
author |
Larsen, Roger B. Herrmann, Bent Brinkhof, Jesse Grimaldo, Eduardo Sistiaga, Manu Berrondo Tatone, Ivan |
author_facet |
Larsen, Roger B. Herrmann, Bent Brinkhof, Jesse Grimaldo, Eduardo Sistiaga, Manu Berrondo Tatone, Ivan |
author_sort |
Larsen, Roger B. |
title |
Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock |
title_short |
Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock |
title_full |
Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock |
title_fullStr |
Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock |
title_full_unstemmed |
Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock |
title_sort |
catch efficiency of groundgears in a bottom trawl fishery: a case study of the barents sea haddock |
publisher |
Taylor & Francis Open |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/13988 https://doi.org/10.1002/mcf2.10048 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
atlantic cod Barents Sea Gadus morhua |
genre_facet |
atlantic cod Barents Sea Gadus morhua |
op_relation |
Marine and Coastal Fisheries info:eu-repo/grantAgreement/RCN/MAROFF-2/216423/Norway/DEVELOPMENT OF MULTIRIG SEMI-PELAGIC TRAWLING// Larsen, R.B., Herrmann, B., Brinkhof. J., Grimaldo, E., Sistiaga, M.B. & Tatone, I. (2018). Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock. Marine and Coastal Fisheries, 10(5). https://doi.org/10.1002/mcf2.10048 FRIDAID 1619674 doi:10.1002/mcf2.10048 1942-5120 https://hdl.handle.net/10037/13988 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1002/mcf2.10048 |
container_title |
Marine and Coastal Fisheries |
container_volume |
10 |
container_issue |
5 |
container_start_page |
493 |
op_container_end_page |
507 |
_version_ |
1766358216177876992 |