Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea

During a 2018 retrieval cruise for abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea, approximately 8600 pots abandoned 1.5 years earlier were recovered. Forty-three percent of a subsample of 1000 pots contained snow crabs, with an average of three crabs per pot. Most of the crabs we...

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Published in:Marine Pollution Bulletin
Main Authors: Humborstad, Odd Børre, Eliassen, Lasse Krøger, Siikavuopio, Sten Ivar, Løkkeborg, Svein, Ingólfsson, Ólafur Arnar, Hjelset, Ann Merete
Format: Article in Journal/Newspaper
Language:English
Published: 2021
Subjects:
Online Access:https://hdl.handle.net/11250/2823621
https://doi.org/10.1016/j.marpolbul.2021.113001
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spelling ftimr:oai:imr.brage.unit.no:11250/2823621 2023-05-15T15:38:23+02:00 Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea Humborstad, Odd Børre Eliassen, Lasse Krøger Siikavuopio, Sten Ivar Løkkeborg, Svein Ingólfsson, Ólafur Arnar Hjelset, Ann Merete 2021 application/pdf https://hdl.handle.net/11250/2823621 https://doi.org/10.1016/j.marpolbul.2021.113001 eng eng Marine Pollution Bulletin. 2021, 173, Part A 1-7. urn:issn:0025-326X https://hdl.handle.net/11250/2823621 https://doi.org/10.1016/j.marpolbul.2021.113001 cristin:1945054 1-7 173, Part A Marine Pollution Bulletin Peer reviewed Journal article 2021 ftimr https://doi.org/10.1016/j.marpolbul.2021.113001 2021-10-20T22:36:23Z During a 2018 retrieval cruise for abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea, approximately 8600 pots abandoned 1.5 years earlier were recovered. Forty-three percent of a subsample of 1000 pots contained snow crabs, with an average of three crabs per pot. Most of the crabs were alive (~98%) and dominated by large males. Pinch injuries and limb loss were common and tended to decline with increasing crab size. Reflex testing showed that the crabs were vital (i.e. the crabs moved their legs, chelipeds and maxillipeds when stimulated), which was supported by a relatively high meat content. However, energy reserves in the digestive glands (hepatopancreas reserves) were low, indicating overall energy deficiencies. Our results indicate considerable unaccounted mortality due to self-baiting, continued catch and cannibalism. The findings demonstrate that snow crab pots which are lost or abandoned in the Barents Sea fishery maintain huge potential for ghost-fishing impacts. publishedVersion Article in Journal/Newspaper Barents Sea Chionoecetes opilio Snow crab Institute for Marine Research: Brage IMR Barents Sea Marine Pollution Bulletin 173 113001
institution Open Polar
collection Institute for Marine Research: Brage IMR
op_collection_id ftimr
language English
description During a 2018 retrieval cruise for abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea, approximately 8600 pots abandoned 1.5 years earlier were recovered. Forty-three percent of a subsample of 1000 pots contained snow crabs, with an average of three crabs per pot. Most of the crabs were alive (~98%) and dominated by large males. Pinch injuries and limb loss were common and tended to decline with increasing crab size. Reflex testing showed that the crabs were vital (i.e. the crabs moved their legs, chelipeds and maxillipeds when stimulated), which was supported by a relatively high meat content. However, energy reserves in the digestive glands (hepatopancreas reserves) were low, indicating overall energy deficiencies. Our results indicate considerable unaccounted mortality due to self-baiting, continued catch and cannibalism. The findings demonstrate that snow crab pots which are lost or abandoned in the Barents Sea fishery maintain huge potential for ghost-fishing impacts. publishedVersion
format Article in Journal/Newspaper
author Humborstad, Odd Børre
Eliassen, Lasse Krøger
Siikavuopio, Sten Ivar
Løkkeborg, Svein
Ingólfsson, Ólafur Arnar
Hjelset, Ann Merete
spellingShingle Humborstad, Odd Børre
Eliassen, Lasse Krøger
Siikavuopio, Sten Ivar
Løkkeborg, Svein
Ingólfsson, Ólafur Arnar
Hjelset, Ann Merete
Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea
author_facet Humborstad, Odd Børre
Eliassen, Lasse Krøger
Siikavuopio, Sten Ivar
Løkkeborg, Svein
Ingólfsson, Ólafur Arnar
Hjelset, Ann Merete
author_sort Humborstad, Odd Børre
title Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea
title_short Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea
title_full Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea
title_fullStr Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea
title_full_unstemmed Catches in abandoned snow crab (Chionoecetes opilio) pots in the Barents Sea
title_sort catches in abandoned snow crab (chionoecetes opilio) pots in the barents sea
publishDate 2021
url https://hdl.handle.net/11250/2823621
https://doi.org/10.1016/j.marpolbul.2021.113001
geographic Barents Sea
geographic_facet Barents Sea
genre Barents Sea
Chionoecetes opilio
Snow crab
genre_facet Barents Sea
Chionoecetes opilio
Snow crab
op_source 1-7
173, Part A
Marine Pollution Bulletin
op_relation Marine Pollution Bulletin. 2021, 173, Part A 1-7.
urn:issn:0025-326X
https://hdl.handle.net/11250/2823621
https://doi.org/10.1016/j.marpolbul.2021.113001
cristin:1945054
op_doi https://doi.org/10.1016/j.marpolbul.2021.113001
container_title Marine Pollution Bulletin
container_volume 173
container_start_page 113001
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