Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea
Since the mid-1990s, a snow crab (Chionoecetes opilio) population has established in the eastern Barents Sea. Spawning females and newly hatched larvae are now also found in the central Barents Sea, warranting speculations on a further westward colonization by pelagic larvae. Here, we model the pote...
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Language: | English |
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Online Access: | https://hdl.handle.net/11250/3098132 https://doi.org/10.1093/icesjms/fsad062 |
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ftimr:oai:imr.brage.unit.no:11250/3098132 2023-11-12T04:15:01+01:00 Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea Huserbråten, Mats Brockstedt Olsen Hjelset, Ann Merete Danielsen, Hanna Ellerine Helle Hvingel, Carsten Agnalt, Ann-Lisbeth 2023 application/pdf https://hdl.handle.net/11250/3098132 https://doi.org/10.1093/icesjms/fsad062 eng eng Havforskningsinstituttet: 14862 ICES Journal of Marine Science. 2023, 80 (5), 1342-1350. urn:issn:1054-3139 https://hdl.handle.net/11250/3098132 https://doi.org/10.1093/icesjms/fsad062 cristin:2163338 1342-1350 80 ICES Journal of Marine Science 5 Peer reviewed Journal article 2023 ftimr https://doi.org/10.1093/icesjms/fsad062 2023-10-25T22:47:27Z Since the mid-1990s, a snow crab (Chionoecetes opilio) population has established in the eastern Barents Sea. Spawning females and newly hatched larvae are now also found in the central Barents Sea, warranting speculations on a further westward colonization by pelagic larvae. Here, we model the potential for larval dispersal and settlement into uncolonized areas in the western Barents Sea. We used a biophysical model of ocean currents and hydrography, coupled with a Lagrangian dispersal algorithm and larval survival functions as response to temperature. The model predicts limited dispersal from the central Barents Sea to western areas, primarily due to a mismatch between prevailing temperature regimes and temperature tolerances for the different larval stages. In addition, there was limited westward transport of water masses with temperatures that would allow completion of the pelagic larval development. We speculate that for larvae to successfully supply benthic recruits to the remaining uncolonized areas in the western Barents Sea, adult crabs would first need to establish new spawning aggregations, for example along the western slopes of the Barents Sea shelf. Immediate implications are limited potential for expanding the fishery to the western areas of the Barents Sea. publishedVersion Article in Journal/Newspaper Barents Sea Chionoecetes opilio Snow crab Institute for Marine Research: Brage IMR Barents Sea ICES Journal of Marine Science 80 5 1342 1350 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Since the mid-1990s, a snow crab (Chionoecetes opilio) population has established in the eastern Barents Sea. Spawning females and newly hatched larvae are now also found in the central Barents Sea, warranting speculations on a further westward colonization by pelagic larvae. Here, we model the potential for larval dispersal and settlement into uncolonized areas in the western Barents Sea. We used a biophysical model of ocean currents and hydrography, coupled with a Lagrangian dispersal algorithm and larval survival functions as response to temperature. The model predicts limited dispersal from the central Barents Sea to western areas, primarily due to a mismatch between prevailing temperature regimes and temperature tolerances for the different larval stages. In addition, there was limited westward transport of water masses with temperatures that would allow completion of the pelagic larval development. We speculate that for larvae to successfully supply benthic recruits to the remaining uncolonized areas in the western Barents Sea, adult crabs would first need to establish new spawning aggregations, for example along the western slopes of the Barents Sea shelf. Immediate implications are limited potential for expanding the fishery to the western areas of the Barents Sea. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Huserbråten, Mats Brockstedt Olsen Hjelset, Ann Merete Danielsen, Hanna Ellerine Helle Hvingel, Carsten Agnalt, Ann-Lisbeth |
spellingShingle |
Huserbråten, Mats Brockstedt Olsen Hjelset, Ann Merete Danielsen, Hanna Ellerine Helle Hvingel, Carsten Agnalt, Ann-Lisbeth Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea |
author_facet |
Huserbråten, Mats Brockstedt Olsen Hjelset, Ann Merete Danielsen, Hanna Ellerine Helle Hvingel, Carsten Agnalt, Ann-Lisbeth |
author_sort |
Huserbråten, Mats Brockstedt Olsen |
title |
Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea |
title_short |
Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea |
title_full |
Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea |
title_fullStr |
Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea |
title_full_unstemmed |
Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea |
title_sort |
modelled dispersal of snow crab (chionoecetes opilio) larvae and potential settlement areas in the western barents sea |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3098132 https://doi.org/10.1093/icesjms/fsad062 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Chionoecetes opilio Snow crab |
genre_facet |
Barents Sea Chionoecetes opilio Snow crab |
op_source |
1342-1350 80 ICES Journal of Marine Science 5 |
op_relation |
Havforskningsinstituttet: 14862 ICES Journal of Marine Science. 2023, 80 (5), 1342-1350. urn:issn:1054-3139 https://hdl.handle.net/11250/3098132 https://doi.org/10.1093/icesjms/fsad062 cristin:2163338 |
op_doi |
https://doi.org/10.1093/icesjms/fsad062 |
container_title |
ICES Journal of Marine Science |
container_volume |
80 |
container_issue |
5 |
container_start_page |
1342 |
op_container_end_page |
1350 |
_version_ |
1782332492679741440 |