Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery
Size selection in commercial snow crab (Chionoecetes opilio) pot fisheries is important for reducing on-board sorting and unintended mortality of undersized individuals. In this paper, we tested whether snow crab of various sizes geometrically could pass through diamond meshes of different sizes and...
Published in: | Ocean & Coastal Management |
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Online Access: | https://orbit.dtu.dk/en/publications/f63dc5f8-616f-4eeb-90ef-aba49aa67020 https://doi.org/10.1016/j.ocecoaman.2020.105495 https://backend.orbit.dtu.dk/ws/files/237775007/1_s2.0_S0964569120304026_main.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/f63dc5f8-616f-4eeb-90ef-aba49aa67020 2024-09-15T18:01:54+00:00 Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery Herrmann, Bent Grimaldo, Eduardo Brčić, Jure Cerbule, Kristine 2021 application/pdf https://orbit.dtu.dk/en/publications/f63dc5f8-616f-4eeb-90ef-aba49aa67020 https://doi.org/10.1016/j.ocecoaman.2020.105495 https://backend.orbit.dtu.dk/ws/files/237775007/1_s2.0_S0964569120304026_main.pdf eng eng https://orbit.dtu.dk/en/publications/f63dc5f8-616f-4eeb-90ef-aba49aa67020 info:eu-repo/semantics/openAccess Herrmann , B , Grimaldo , E , Brčić , J & Cerbule , K 2021 , ' Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery ' , Ocean & Coastal Management , vol. 201 , 105495 . https://doi.org/10.1016/j.ocecoaman.2020.105495 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2021 ftdtupubl https://doi.org/10.1016/j.ocecoaman.2020.105495 2024-08-13T00:03:06Z Size selection in commercial snow crab (Chionoecetes opilio) pot fisheries is important for reducing on-board sorting and unintended mortality of undersized individuals. In this paper, we tested whether snow crab of various sizes geometrically could pass through diamond meshes of different sizes and opening angles, to estimate a model for predicting the effect of mesh size and mesh opening angle on snow crab size selectivity. The model was able to explain the size selection results from earlier sea trials using commercial snow crab pots. Size selection was strongly dependent on mesh opening angle, making it less well-defined for the conical pots often used in snow crab fisheries where mesh opening angle varies. We predicted the optimal mesh size for the Norwegian snow crab fishery is 140 mm with a 65° opening angle, resulting in high capture efficiency for target size snow crab (larger than 100 mm carapace width) and low sorting effort, with approximately 10% of the catch consisting of undersized snow crab. Our model can potentially be used for other snow crab fisheries. Article in Journal/Newspaper Chionoecetes opilio Snow crab Technical University of Denmark: DTU Orbit Ocean & Coastal Management 201 105495 |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Herrmann, Bent Grimaldo, Eduardo Brčić, Jure Cerbule, Kristine Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Size selection in commercial snow crab (Chionoecetes opilio) pot fisheries is important for reducing on-board sorting and unintended mortality of undersized individuals. In this paper, we tested whether snow crab of various sizes geometrically could pass through diamond meshes of different sizes and opening angles, to estimate a model for predicting the effect of mesh size and mesh opening angle on snow crab size selectivity. The model was able to explain the size selection results from earlier sea trials using commercial snow crab pots. Size selection was strongly dependent on mesh opening angle, making it less well-defined for the conical pots often used in snow crab fisheries where mesh opening angle varies. We predicted the optimal mesh size for the Norwegian snow crab fishery is 140 mm with a 65° opening angle, resulting in high capture efficiency for target size snow crab (larger than 100 mm carapace width) and low sorting effort, with approximately 10% of the catch consisting of undersized snow crab. Our model can potentially be used for other snow crab fisheries. |
format |
Article in Journal/Newspaper |
author |
Herrmann, Bent Grimaldo, Eduardo Brčić, Jure Cerbule, Kristine |
author_facet |
Herrmann, Bent Grimaldo, Eduardo Brčić, Jure Cerbule, Kristine |
author_sort |
Herrmann, Bent |
title |
Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery |
title_short |
Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery |
title_full |
Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery |
title_fullStr |
Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery |
title_full_unstemmed |
Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery |
title_sort |
modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (chionoecetes opilio) pot fishery |
publishDate |
2021 |
url |
https://orbit.dtu.dk/en/publications/f63dc5f8-616f-4eeb-90ef-aba49aa67020 https://doi.org/10.1016/j.ocecoaman.2020.105495 https://backend.orbit.dtu.dk/ws/files/237775007/1_s2.0_S0964569120304026_main.pdf |
genre |
Chionoecetes opilio Snow crab |
genre_facet |
Chionoecetes opilio Snow crab |
op_source |
Herrmann , B , Grimaldo , E , Brčić , J & Cerbule , K 2021 , ' Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery ' , Ocean & Coastal Management , vol. 201 , 105495 . https://doi.org/10.1016/j.ocecoaman.2020.105495 |
op_relation |
https://orbit.dtu.dk/en/publications/f63dc5f8-616f-4eeb-90ef-aba49aa67020 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.ocecoaman.2020.105495 |
container_title |
Ocean & Coastal Management |
container_volume |
201 |
container_start_page |
105495 |
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1810438962709266432 |