Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff
Capture of recently molted soft-shell crab in the Newfoundland and Labrador (NL) snow crab (Chionoecetes opilio) fishery is undesirable due to resource wastage associated with low meat yield and supposed high mortality rates upon discard. This study is intended to formalize best-practice management...
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ftfrontimediafig:oai:figshare.com:article/14595363 2023-05-15T15:54:09+02:00 Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff Darrell R.J. Mullowney Krista D. Baker Julia R. Pantin 2021-05-14T05:40:17Z https://doi.org/10.3389/fmars.2021.591496.s002 https://figshare.com/articles/figure/Image_2_Hard_to_Manage_Dynamics_of_Soft-Shell_Crab_in_the_Newfoundland_and_Labrador_Snow_Crab_Fishery_tiff/14595363 unknown doi:10.3389/fmars.2021.591496.s002 https://figshare.com/articles/figure/Image_2_Hard_to_Manage_Dynamics_of_Soft-Shell_Crab_in_the_Newfoundland_and_Labrador_Snow_Crab_Fishery_tiff/14595363 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering snow crab Newfoundland Labrador soft shell discard mortality seasonality fisheries management Image Figure 2021 ftfrontimediafig https://doi.org/10.3389/fmars.2021.591496.s002 2021-05-19T22:59:54Z Capture of recently molted soft-shell crab in the Newfoundland and Labrador (NL) snow crab (Chionoecetes opilio) fishery is undesirable due to resource wastage associated with low meat yield and supposed high mortality rates upon discard. This study is intended to formalize best-practice management advice for avoidance of soft-shell crab in the fishery. The study investigates factors affecting soft-shell incidence in the catch across a large geographic stock range encompassing dynamic habitat and contrasting harvest rate strategies. The results demonstrate an interaction between seasonality and harvest rate in governing soft-shell crab levels in the fishery. Greatest potential for high soft-shell incidence occurs in late-spring or summer (June–July) fisheries in warm water populations subjected to heavy fishing pressure, with warm water populations shown to be associated with earlier molting periods. The study concludes that the optimal time to harvest snow crab is during winter or early spring, and advises that wherever winter or early spring fisheries are not possible, a best-practice management strategy is to minimize wastage by maintaining a strong residual biomass of large hard-shell males in the population at all times. This strategy is easily enabled by consistent application of low exploitation rates. Still Image Chionoecetes opilio Newfoundland Snow crab Frontiers: Figshare Newfoundland |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering snow crab Newfoundland Labrador soft shell discard mortality seasonality fisheries management |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering snow crab Newfoundland Labrador soft shell discard mortality seasonality fisheries management Darrell R.J. Mullowney Krista D. Baker Julia R. Pantin Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering snow crab Newfoundland Labrador soft shell discard mortality seasonality fisheries management |
description |
Capture of recently molted soft-shell crab in the Newfoundland and Labrador (NL) snow crab (Chionoecetes opilio) fishery is undesirable due to resource wastage associated with low meat yield and supposed high mortality rates upon discard. This study is intended to formalize best-practice management advice for avoidance of soft-shell crab in the fishery. The study investigates factors affecting soft-shell incidence in the catch across a large geographic stock range encompassing dynamic habitat and contrasting harvest rate strategies. The results demonstrate an interaction between seasonality and harvest rate in governing soft-shell crab levels in the fishery. Greatest potential for high soft-shell incidence occurs in late-spring or summer (June–July) fisheries in warm water populations subjected to heavy fishing pressure, with warm water populations shown to be associated with earlier molting periods. The study concludes that the optimal time to harvest snow crab is during winter or early spring, and advises that wherever winter or early spring fisheries are not possible, a best-practice management strategy is to minimize wastage by maintaining a strong residual biomass of large hard-shell males in the population at all times. This strategy is easily enabled by consistent application of low exploitation rates. |
format |
Still Image |
author |
Darrell R.J. Mullowney Krista D. Baker Julia R. Pantin |
author_facet |
Darrell R.J. Mullowney Krista D. Baker Julia R. Pantin |
author_sort |
Darrell R.J. Mullowney |
title |
Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_short |
Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_full |
Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_fullStr |
Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_full_unstemmed |
Image_2_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_sort |
image_2_hard to manage? dynamics of soft-shell crab in the newfoundland and labrador snow crab fishery.tiff |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmars.2021.591496.s002 https://figshare.com/articles/figure/Image_2_Hard_to_Manage_Dynamics_of_Soft-Shell_Crab_in_the_Newfoundland_and_Labrador_Snow_Crab_Fishery_tiff/14595363 |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Chionoecetes opilio Newfoundland Snow crab |
genre_facet |
Chionoecetes opilio Newfoundland Snow crab |
op_relation |
doi:10.3389/fmars.2021.591496.s002 https://figshare.com/articles/figure/Image_2_Hard_to_Manage_Dynamics_of_Soft-Shell_Crab_in_the_Newfoundland_and_Labrador_Snow_Crab_Fishery_tiff/14595363 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.591496.s002 |
_version_ |
1766389329271193600 |