An excluder device, tested on a trawl net in a flume tank with dummy seals in New Zealand excluded dummy seals from the codend of the net. The modifications were trialed to address bycatch of Hookers sea lions and New Zealand fur seals.
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Sustainability in Crisis – Science, Industry and Government Protect Right Whales and Fishing Livelihoods | Consortium for Wildlife Bycatch Reduction
Session Title: Sustainability in Crisis – Science, Industry and Government Protect Right Whales and Fishing Livelihoods Session Description: In recent years, ropes used with fixed fishing gear entangled an unprecedented number of endangered North Atlantic right whales. In response, the MSC suspended its eco-certification for a snow crab fishery in one of the impacted areas, […]
Canada DFO Gear Innovation Summit 2020 | Consortium for Wildlife Bycatch Reduction
Department of Fisheries and Oceans Canada is holding a Gear Innovation Summit in Halifax, Nova Scotia, on February 11-12, 2020 to explore options for making fishing gear safer for whales, and to find innovative ways to prevent, retrieve and recycle lost or discarded fishing gear, or ghost gear. Over 250 harvesters, industry representatives, fishing gear manufacturers, […]
Loggerhead turtle, finfish and shrimp retention studies on four excluder devices (TEDs) | Consortium for Wildlife Bycatch Reduction
Turtle excluder devices reduce sea turtle and non-target finfish (Atlantic croaker (Micropogonias undulateus), spot (Leiostomus exanthurus), sea catfish (Arius felis), and weakfish (Cynoscion regalis)) bycatch in the Gulf of Mexico prawn trawl fishery. Catch of targeted shrimp varied by location and TED configuration, but there was no significant difference in shrimp catch rates in 3 […]
Hawaii Longline Seabird Mortality Mitigation Project. | Consortium for Wildlife Bycatch Reduction
Dyed bait, alternative offal discards, bird-scaring devices (streamer lines & towed buoys), and night sets reduced seabird (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) bycatch in the Hawaiian swordfish and tuna longline fisheries. Alternative offal discards worked by distracting seabirds from hooked bait. Dyed bait did not affect the catch of target and marketable […]
Food color and marine turtle feeding behavior: Can blue bait reduce turtle bycatch in commercial fisheries? | Consortium for Wildlife Bycatch Reduction
Although effective with captive loggerhead (Caretta caretta) and Kemp˙s ridley (Lepiochelys kempii) sea turtles, blue dyed bait is not effective in reducing olive ridley (Lepidochelys olivacea) and green sea turtle (Chelonia mydas) bycatch in longline fisheries in Costa Rica.
Industry trials of a modified sea scallop dredge to minimize the catch of sea turtles | Consortium for Wildlife Bycatch Reduction
A chain mat placed on Northwest Atlantic dredge gear eliminated bycatch of sea turtles: loggerhead (Caretta caretta), leatherback (Dermocheles coriacea), and green sea turtles (Chelonia mydas). The chain mat reduced catch by 6.71%.
Design and assessment of two gear modifications to reduce the benthic impact and fuel intensity of prawn trawling in Australia | Consortium for Wildlife Bycatch Reduction
Modified ground gear, known as batwing otter boards, created less disturbance to the seafloor than traditional otter boards in the Australian prawn trawl fishery, decreasing bycatch of benthic squirts and starfish by approximately 85-90%. The target catch of both prawns and scallops decreased by about 10%. Modified ground gear, called soft-brush ground gear, reduced bycatch […]
Reducing bycatch: can acoustic pingers keep Hector's dolphins out of fishing nets? | Consortium for Wildlife Bycatch Reduction
Acoustic pingers were tested for their effectiveness to reduce entanglement of Hector’s dolphins in New Zealand gillnets. A remote control device was used to raise either active or passive acoustic pingers near Hector’s dolphins. The dolphins’ movement and distribution was observed from shore.Dolphins avoided the immediate area when pingers were active, but did not leave […]
Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights | Consortium for Wildlife Bycatch Reduction
This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially […]
Marine mammal bycatch in gillnet fisheries, 1990-2011 | Consortium for Wildlife Bycatch Reduction
A new review of marine mammal bycatch in gillnet fisheries from 1990 to 2011 has been published in the open access journal, Endangered Species Research, in a theme section on Techniques for reducing bycatch of marine mammals in gillnets. Efforts to look at marine mammal bycatch on a global scale have been few. The last major attempt […]
Reducing seabird bycatch in the South African joint venture tuna fishery using bird-scaring lines, branch line weighting and nighttime setting of hooks | Consortium for Wildlife Bycatch Reduction
Several seabird bycatch mitigation techniques were tested aboard distant water tuna fisheries in the South African EEZ. Two types of bird scaring designs, light lines with short streams vs. hybrid lines with a mix of streamer lengths were compared with unweighted branch lines. In addition, unweighted to weighted branch lines were tested and night vs. […]
Performance assessment of an underwater chute to mitigate seabird bycatch in the Hawaii pelagic longline tuna fishery | Consortium for Wildlife Bycatch Reduction
Underwater setting chutes reduce bycatch of seabirds–Laysan (Phoebastria immutabilis) and Black-footed (P. nigripes) albatrosses–in the Hawaiian longline tuna fishery. The underwater setting techniques increased bait retention.
Effectiveness of four industry-developed bycatch reduction devices in Louisiana's inshore waters | Consortium for Wildlife Bycatch Reduction
Three of four bycatch reduction devices placed on shrimp (Penaeus aztecus and Penaeus setiferus) trawls in the Gulf of Mexico reduced bycatch of fish species but also reduced catch of shrimp. The fourth bycatch reduction device increased catch of shrimp and fish when compared with control nets.