How, J., Coughran, D., Smith, J., Double, M., Harrison, J., McMath, J., Hebiton, B. and A. denham Fisheries Research Report The authors investigated several data sources and conducted surveys to identify potential mitigation measures that could be used to reduce humpback whale entanglements in Western Australia (WA). The Cetacean Stranding Database (CSD) and Commercial Whale […]
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Field Study | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on July 12, 2012 – 15:09 Evaluation of turtle exclusion and escapement devices for hoop-nets Chimney-net design did not reduce the number of average size of flathead catfish Chimney-net design significantly reduced (84%) the bycatch of turtles
Factors affecting elasmobranch escape from turtle excluder devices (TEDs) in a tropical penaeid-trawl fishery. | Consortium for Wildlife Bycatch Reduction
Submitted by lweiss on February 13, 2020 – 11:23 Tiger prawn (Penaeus semisulcatus and P. esculentus) and endeavor prawn (Metapenaus endeavouri and M. ensus) TEDs facilitated the escape of large elasmobranchs, with bar spacing and TED orientation acting as important design factors affecting escape.
Physical and psychological deterrence strategies to mitigate odontocete by-catch and depredation in pelagic longline fisheries: progress report | Consortium for Wildlife Bycatch Reduction
Hamer, D.J., Childerhouse, S.J. Progress report to Pacific Islands Forum Fisheries Agency, World Wildlife Fund South Pacific, and Pacific Islands Tuna Industry Association Two devices were designed to prevent odontocetes from depredating caught fish and putting themselves at-risk of becoming bycatch. One device used physical deterrence by shouding the fish with a barrier and the […]
Field Study 769 | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on January 14, 2013 – 17:12 Skipjack and yellowfin tuna Fewer skipjack tuna were caught by number and weight. Yellowfin tuna catch was higher. Double-FADS caught larger bigeye tunas but the catch rate was slightly less than on normal FAD sets.
Long-term effectiveness, failure rates, and “dinner-bell” properties of acoustic pingers in a gillnet fishery | Consortium for Wildlife Bycatch Reduction
Carretta, JV and Barlow, J Marine Technology Society Journal [email protected] [email protected] The long-term effectiveness of acoustic pingers in reducing marine mammal bycatch was assessed in the California swordfish and thresher shark drift gillnet fishery. Bycatch was observed at sea between 1990 and 2009, with acoustic pingers being present from 1996 to 2009. Bycatch rates of […]
Incremental fishing gear modifications fail to significantly reduce large whale serious injury rates | Consortium for Wildlife Bycatch Reduction
Pace, R.M., Cole, T.V.N., and A. G. Henry Endangered Species Research The annual counts of large whale entanglements (including serious injury and mortalities) were analyzed and used to assess the effectiveness of the Atlantic Large Whale Take Reduction Plan. Fishing gear entanglements related to the annual number of mortality events averaged 2.5 for right whales […]
Comparison of bycatch species captured during daytime and nighttime: preliminary results of longline experiments carried out in the Seychelles waters | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on September 30, 2015 – 14:08 Differences in the species composition, quantity and depth of capture for bycatch species All marketable species were caught in the 150 m layer during day and night sets.
Permanent magnets reduce bycatch of benthic sharks in an ocean trap fishery | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on July 19, 2018 – 15:25 New South Whales, Australia Permanent magnets reduce bycatch of benthic sharks in an ocean trap fishery Increased target catch rates Significantly reduced interactions with elasmobranchs Electromagnetic deterrents
Spatial and temporal assessment of potential risk to cetaceans from static fishing gears | Consortium for Wildlife Bycatch Reduction
Brown, S.L., Reid, D. and E. Rogan Corresponding author. Tel.: þ353 21 490 4663. E-mail address: [email protected] (S.L. Brown). A spatially and temporally explicit Productivity and Susceptibility Analysis (PSA) was developed to screen cetacean species for bycatch risk. This PSA can be included under Ecosystem Based Fisheries Management (EBFM). The potential risk to harbor porpoises […]
Assessment of modified gillnets as a means to reduce bycatch in southeastern North Carolina coastal waters | Consortium for Wildlife Bycatch Reduction
Thorpe, T., Pabst, D.A., Beresoff, D. North Carolina Marine Fisheries Commission, Fishery Resource Grant Program Gillnets with three difference mesh sizes (2 7/8″, 3″ and 4″) were modified to use 200 lbs/200 yard lead line and 11 oz buoyancy floats (versus 50lbs/200 yard lead line and 3 oz floats) to increase the tension in the […]
Field Study 760 | Consortium for Wildlife Bycatch Reduction
Submitted by BrianKot on November 20, 2012 – 17:12 Mingan Archipelago, Gulf of St. Lawrence, Quebec, Canada Unknown but likely crab and whelk Decreased feeding ability of balenopterid whales Large Cetaceans (maximum length > 7.5 meters)
Marine animal entanglements in mussel aquaculture gear: Documented cases from mussel farming regions of the world including first-hand accounts from Iceland | Consortium for Wildlife Bycatch Reduction
Documented entanglement cases for sea turtles and cetaceans in mussel aquaculture gear worldwide were collected. Online surveys and semi-structured interviews with mussel operators were used in Iceland. A total of seven entanglement reports were collected, four baleen whales, one harbour porpoise and two leatherback sea turtles. Mussel spat collecting ropes were involved in the majority […]
Field Study | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on June 8, 2012 – 11:38 Significant differences between catch rates were only found between the J-4 and C18 hooks. Large circle hooks (C18) had the lowest catch rates for tunas and small circle hooks (C15) had the lowest catch rates for billfish Significant differences were found between J4 and C15 and […]