Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea
Abstract The snow crab (Chionoecetes opilio) is a newly established species in the Barents Sea, increasing in both distribution and abundance in recent years. We explore the potential importance of North-east Arctic cod (Gadus morhua) predation in structuring the snow crab population expansion in th...
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ftoslouniv:oai:www.duo.uio.no:10852/90029 2023-05-15T14:28:00+02:00 Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea Holt, Rebecca Emma Hvingel, Carsten Agnalt, Ann-Lisbeth Dolgov, Andrey V. Hjelset, Ann Merete Bogstad, Bjarte 2021-12-14T18:06:17Z http://hdl.handle.net/10852/90029 http://urn.nb.no/URN:NBN:no-92624 https://doi.org/10.1093/icesjms/fsaa168 EN eng HAVFORSK/14862 NFR/255460 http://urn.nb.no/URN:NBN:no-92624 Holt, Rebecca Emma Hvingel, Carsten Agnalt, Ann-Lisbeth Dolgov, Andrey V. Hjelset, Ann Merete Bogstad, Bjarte . Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea. ICES Journal of Marine Science. 2021, 78(2), 491-501 http://hdl.handle.net/10852/90029 1968540 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ICES Journal of Marine Science&rft.volume=78&rft.spage=491&rft.date=2021 ICES Journal of Marine Science 78 2 491 501 https://doi.org/10.1093/icesjms/fsaa168 URN:NBN:no-92624 Fulltext https://www.duo.uio.no/bitstream/handle/10852/90029/1/Snow%2Bcrab-fsaa168.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1054-3139 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.1093/icesjms/fsaa168 2022-01-26T23:33:56Z Abstract The snow crab (Chionoecetes opilio) is a newly established species in the Barents Sea, increasing in both distribution and abundance in recent years. We explore the potential importance of North-east Arctic cod (Gadus morhua) predation in structuring the snow crab population expansion in the Barents Sea, through an analysis of cod stomach content data from 2003 to 2018. Spatio-temporal patterns of snow crab within cod diet are assessed across years, between seasons, as well as ontogenetic trends, including predator–prey size relationships. Snow crab represents a new prey item for cod and in recent years the most dominant demersal crustacean species in cod diet. The proportion of snow crab within cod diet increases over time. Primarily 60–110 cm cod prey upon snow crab, mainly during the summer/autumn season. Our results support the idea that the snow crab is still expanding, shifting distribution north and westwards. Cod has the potential to regulate the snow crab population but is unlikely to be in direct competition with the fishery in the Barents Sea. This work suggests that cod can be used as biological sampling tools together with other monitoring programmes to elucidate how new species may affect predator–prey and food-web dynamics within an ecosystem context. Article in Journal/Newspaper Arctic Arctic cod Arctic Barents Sea Chionoecetes opilio Gadus morhua Snow crab Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Barents Sea ICES Journal of Marine Science 78 2 491 501 |
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Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract The snow crab (Chionoecetes opilio) is a newly established species in the Barents Sea, increasing in both distribution and abundance in recent years. We explore the potential importance of North-east Arctic cod (Gadus morhua) predation in structuring the snow crab population expansion in the Barents Sea, through an analysis of cod stomach content data from 2003 to 2018. Spatio-temporal patterns of snow crab within cod diet are assessed across years, between seasons, as well as ontogenetic trends, including predator–prey size relationships. Snow crab represents a new prey item for cod and in recent years the most dominant demersal crustacean species in cod diet. The proportion of snow crab within cod diet increases over time. Primarily 60–110 cm cod prey upon snow crab, mainly during the summer/autumn season. Our results support the idea that the snow crab is still expanding, shifting distribution north and westwards. Cod has the potential to regulate the snow crab population but is unlikely to be in direct competition with the fishery in the Barents Sea. This work suggests that cod can be used as biological sampling tools together with other monitoring programmes to elucidate how new species may affect predator–prey and food-web dynamics within an ecosystem context. |
format |
Article in Journal/Newspaper |
author |
Holt, Rebecca Emma Hvingel, Carsten Agnalt, Ann-Lisbeth Dolgov, Andrey V. Hjelset, Ann Merete Bogstad, Bjarte |
spellingShingle |
Holt, Rebecca Emma Hvingel, Carsten Agnalt, Ann-Lisbeth Dolgov, Andrey V. Hjelset, Ann Merete Bogstad, Bjarte Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea |
author_facet |
Holt, Rebecca Emma Hvingel, Carsten Agnalt, Ann-Lisbeth Dolgov, Andrey V. Hjelset, Ann Merete Bogstad, Bjarte |
author_sort |
Holt, Rebecca Emma |
title |
Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea |
title_short |
Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea |
title_full |
Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea |
title_fullStr |
Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea |
title_full_unstemmed |
Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea |
title_sort |
snow crab (chionoecetes opilio), a new food item for north-east arctic cod (gadus morhua) in the barents sea |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/90029 http://urn.nb.no/URN:NBN:no-92624 https://doi.org/10.1093/icesjms/fsaa168 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Arctic cod Arctic Barents Sea Chionoecetes opilio Gadus morhua Snow crab |
genre_facet |
Arctic Arctic cod Arctic Barents Sea Chionoecetes opilio Gadus morhua Snow crab |
op_source |
1054-3139 |
op_relation |
HAVFORSK/14862 NFR/255460 http://urn.nb.no/URN:NBN:no-92624 Holt, Rebecca Emma Hvingel, Carsten Agnalt, Ann-Lisbeth Dolgov, Andrey V. Hjelset, Ann Merete Bogstad, Bjarte . Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea. ICES Journal of Marine Science. 2021, 78(2), 491-501 http://hdl.handle.net/10852/90029 1968540 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ICES Journal of Marine Science&rft.volume=78&rft.spage=491&rft.date=2021 ICES Journal of Marine Science 78 2 491 501 https://doi.org/10.1093/icesjms/fsaa168 URN:NBN:no-92624 Fulltext https://www.duo.uio.no/bitstream/handle/10852/90029/1/Snow%2Bcrab-fsaa168.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1093/icesjms/fsaa168 |
container_title |
ICES Journal of Marine Science |
container_volume |
78 |
container_issue |
2 |
container_start_page |
491 |
op_container_end_page |
501 |
_version_ |
1766302112506970112 |