Zappes, C.A., de Sa Alves, L.C.P., da Silva, C.V., de Freitas Azevedo, A., Di Beneditto, A.P.M., Andriolo, A. Ocean & Coastal Management Camilah Antunes Zappes Universidade Federal Fluminense, Instituto de Ciências da Sociedade e Desenvolvimento Regional, Departamento de Geografia de Campos, Rua José do Patrocínio, 71, Centro, Campos dos Goytacazes, Rio de Janeiro CEP: 28010-385, […]
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A field test of acoustic deterrent devices used to reduce interactions between bottlenose dolphins and a coastal gillnet fishery | Consortium for Wildlife Bycatch Reduction
Waples, D.M., Thorne, L.H., Hodge, L.E.W., Burke, E.K., Urian, K.W., Read, A.J. A study was conduceted to test the effect of SaveWave acoustic deterrent devices on target fish catch and bottlenose dolphins in the North Carolina Spanish mackerel gillnet fishery. Observations were carried out on commercial vessels and focal visual and acoustic follows of dolphins […]
Fishing Technique Modifications | Consortium for Wildlife Bycatch Reduction
Modifications to fishing gear can significantly mitigate bycatch without reducing a fishermen’s target catch. To read about more examples of gear modifications search the Bycatch Reduction Technique Database. The Consortium works with scientists and fishermen to test gear modifications that have the potential to reduce bycatch, while maintaining target catch, minimizing cost, and preserving fishermen’s […]
Effects of eliminating shallow hooks from tuna longline sets on target and non-target species in the Hawaii-based pelagic tuna fishery | Consortium for Wildlife Bycatch Reduction
Beverly, S., D. Curran, M. Musyl, and B. Molony. Longlines were set at depths greater than 100m using weighted lines to reduce bycatch of recreationally important fish species and protected species such as seabirds and sea turtles. While bigeye tuna catch rates were consistent between control and experimental sets, bycatch rates increased for sickle pomfret […]
Prevalence of visible injuries to leatherback sea turtles Dermochelys coriacea in the northwest Atlantic | Consortium for Wildlife Bycatch Reduction
Archibald, D.W. and M.C. James Endangered Species Research Population Ecology Division Fisheries and Oceans Canada Bedford Institute of Oceanography Dartmouth, NS B2Y 4A2, Canada [email protected] Standardized external injury assessments were used to investigate the relative importance of direct anthropogenic and natural threats to northwest Atlantic leatherback turtles (Dermochelys coriacea). The information was used to assess […]
Field Study 578 | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on October 12, 2011 – 08:23 No significant effect on bottlenose dolphins’ presence, distance from AHD, group size or time spent in the fish farm area Small Cetaceans (maximum length < 7.5 meters) Acoustic deterrent devices
Testing the effectiveness of an acoustic deterrent for gray whales along the Oregon Coast | Consortium for Wildlife Bycatch Reduction
Lagerquist, B., Winson, M., and B. Mate US Department of Energy Report Oregon State University Marine Mammal Institute Low-powered sound sources were tested for their ability to deter gray whales from potentially harmful areas. An acoustic device (1-s frequency modulated 1-3 kHz warble deterrent signal) was moored to the seafloor in the gray whales migration […]
Bycatch and release of pelagic megafauna in industrial trawler fisheries off Northwest Africa | Consortium for Wildlife Bycatch Reduction
Zeeberg, J., Corten, A., Graff, E. The addition of a filter grid (inclined at ca. 20 degrees) that leads to an escape tunnel in trawl nets allowed 100% of rays and turtles to escape, 75% of manta rays, 40% of billfish and between 20-75% of sharks to escape. http://www.xs4all.nl/~jzeebe1/Mauritanie_Zeeberg.pdf
Study on the methods to mitigate the bycatch of juvenile bigeye tuna by introducing Double-FADs with light stimulus for tuna purse seine fishery in the Western and Central Pacific Ocean | Consortium for Wildlife Bycatch Reduction
Kawamoto, T., Yoshimoto, S., Asakawa, E., Sato, K., Okamoto, H., Kumazawa, T., Oshima, T., Takao, Y. and Hasegawa, S. Western and Central Pacific Fisheries Commission A Double-FAD design was tested for it’s ability to mitigate the incidental capture of bigeye tuna in purse fisheries of the Western and Central Pacific Ocean. The design consisted of […]
Do pingers reduce interactions between bottlenose dolphins and nets around the Balearic Islands? | Consortium for Wildlife Bycatch Reduction
Submitted by AMackay on February 3, 2009 – 12:11 Balearic Islands, Mediterranean Sea Increased target catch (but not significant) 49% reduction in depredation rate by bottlenose dolphins (Tursiops truncatus) Small Cetaceans (maximum length < 7.5 meters) Acoustic deterrent devices
Seabird mortality at trawler warp cables and a proposed mitigation measure: A case study in Golfo San Jorge, Patagonia, Argentina | Consortium for Wildlife Bycatch Reduction
Gonzalez-Zevallos, D., P. and Yorio, G. Caille A warp cable modification (plastic cone attached to each warp cable) reduced seabird bycatch in the high-sea Argentine hake (Merluccius hubbsi) trawl fishery. The two most abundantly captured seabirds prior to the attachment of plastic cones were the Kelp gull (Larus dominicanus) and the Black-browed albatross (Thalassarche melanophrys).
Field Study 325 | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on August 21, 2010 – 16:19 Reduced the proportion of soft and damaged prawns by 63.2% and reduced catches of tiger prawns by 6.3% Downward facing TEDs reduced large sponge catches by 95.9%
Assessment of seal-fishery interactions in the winter blue grenadier fishery off west Tasmania and the development of fishing practices and Seal Exclusion Devices to mitigate seal bycatch by factory trawlers | Consortium for Wildlife Bycatch Reduction
Tilzey, R., S. Goldsworthy, M. Cawthorn, N. Calvert, D. Hamer, S. Russell, P. Shaughnessy, B. Wise, and C. Stewardson Australian Government, Fisheries Research and Development Corporation, Bureau of Rural Sciences, Project No. 2001/008 Fisheries Research and Development Corporation PO Box 222 Deakin West, ACT 2600, Australia Several designs of seal exclusion devices (SEDs) were tested […]
Fishing gear modifications to reduce elasmobranch mortality in pelagic and bottom longline fisheries off Northeast Brazil | Consortium for Wildlife Bycatch Reduction
Afonso, A., Hazin, F., Carvalho, F., Pacheco, J., Hazin, H., Kerstetter, D., Murie, D., Burgess, G. The type (circle 18/0 0 degree offset and J-style 9/0 10 degree offset) and position of hooks in the water column were tested to determine the effects on catch rates and mortality of elasmobranchs. Tests were conducted aboard pelagic […]