Image_3_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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2021
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ftsmithonian:oai:figshare.com:article/14595366 2023-05-15T15:54:09+02:00 Image_3_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff Darrell R.J. Mullowney (10801053) Krista D. Baker (10801056) Julia R. Pantin (7057751) 2021-05-14T05:40:17Z https://doi.org/10.3389/fmars.2021.591496.s003 unknown https://figshare.com/articles/figure/Image_3_Hard_to_Manage_Dynamics_of_Soft-Shell_Crab_in_the_Newfoundland_and_Labrador_Snow_Crab_Fishery_tiff/14595366 doi:10.3389/fmars.2021.591496.s003 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 ftsmithonian https://doi.org/10.3389/fmars.2021.591496.s003 2021-05-21T14:51:11Z 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 Unknown Newfoundland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
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 (10801053) Krista D. Baker (10801056) Julia R. Pantin (7057751) Image_3_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 (10801053) Krista D. Baker (10801056) Julia R. Pantin (7057751) |
author_facet |
Darrell R.J. Mullowney (10801053) Krista D. Baker (10801056) Julia R. Pantin (7057751) |
author_sort |
Darrell R.J. Mullowney (10801053) |
title |
Image_3_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_short |
Image_3_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_full |
Image_3_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_fullStr |
Image_3_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_full_unstemmed |
Image_3_Hard to Manage? Dynamics of Soft-Shell Crab in the Newfoundland and Labrador Snow Crab Fishery.tiff |
title_sort |
image_3_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.s003 |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Chionoecetes opilio Newfoundland Snow crab |
genre_facet |
Chionoecetes opilio Newfoundland Snow crab |
op_relation |
https://figshare.com/articles/figure/Image_3_Hard_to_Manage_Dynamics_of_Soft-Shell_Crab_in_the_Newfoundland_and_Labrador_Snow_Crab_Fishery_tiff/14595366 doi:10.3389/fmars.2021.591496.s003 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.591496.s003 |
_version_ |
1766389332012171264 |