Sales, G., Giffoni, B.B., Fiedler, F.N., Azevedo, V., Kotas, J.E., Swimmer, Y. and Bugoni, L. Aquatic Conservation: Marine and Freshwater Ecosystems The effectiveness of 18/0 circle hooks, compared to 9/0 J-type hooks, in decreasing the incidental capture and post-release mortaliity of sea turtles, was tested in the Brazilian pelagic longline fishery operating in the south-western […]
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Bycatch reduction in trammel net fishery for prawn (Melicertus kerathurus) by using guarding net in Izmir Bay on Aegean Coast of Turkey | Consortium for Wildlife Bycatch Reduction
Metin, C., Gikce, G., Aydin, I., Bayramic, I. Turkish Journal of Fisheries and Aquatic Sciences Ege University Underwater Research and Application Centre 35440 Izmir, Turkey [email protected] The number of floats and hanging ratio of trammel nets were altered in two experimental nets and compared to a standard trammel net to determine the impact on reducing […]
Evaluation of hook and bait type on the catch rates in the western North Atlantic Ocean pelagic longline fishery | Consortium for Wildlife Bycatch Reduction
Foster, D.G., Epperly, S.P., Shah, A.K. and Watson, J.W. Bulletin of Marine Science Research was conducted in the western North Atlantic Ocean to determine what effect changes to the hook design and bait type would have on pelagic longline bycatch. Three types of hooks, 18/0 and 20/0 circle hooks and 10/0 Japanese tuna hooks with […]
False killer whale (Pseudorca crassidens) echolocation and acoustic disruption: implications for longline bycatch and depredation | Consortium for Wildlife Bycatch Reduction
Mooney, T.A. A.F. Pacini and P.E. Nachtigall Canadian Journal of Zoology An acoustic device designed to deter false killer whales from approaching longlines by reducing the whales’ echolocation performance capabilities was tested on a trained false killer whale. The device, Longline Saver, produced a series of complex, broadband signals (1-250 kHz) at high intensity levels […]
Experiment to Evaluate Gear Modification on Rates of Sea Turtle Bycatch in the Swordfish Longline Fishery in the Azores Phase 3 | Consortium for Wildlife Bycatch Reduction
Bolton, A. and K. Bjorndal Final Project Report submitted to the U.S. National Marine Fisheries Service. Archie Carr Center for Sea Turtle Research, University of Florida, Gainesville There was no significant difference in the number of loggerhead sea turtles caught in the Azores longline swordfish and blue shark fishery between straight 16/0, offset 16/0, and […]
Long-term effectiveness of pingers on a small population of finless porpoises in Japan | Consortium for Wildlife Bycatch Reduction
Submitted by lweiss on February 25, 2020 – 14:34 Initially, pinger use decreased porpoise encounter rates with gillnets. However, this effect decreased over time but was effective later after temporary cessation of pinger use. Neophocoena spp. (finless porpoise) Acoustic deterrent devices
Field Study 723 | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on September 14, 2012 – 17:06 Circle hooks combined with mackerel bait increased swordfish catch by weight. With squid, decreased swordfish catch, increased bluefin and albacore tuna catch. Mackerel bait decreased bigeye and albacore tuna catch. Circle hooks decreased loggerhead and leatherback catch; even more effective for loggerheads when combined with mackerel […]
The impact of predation by marine mammals on Patagonian toothfish longline fisheries | Consortium for Wildlife Bycatch Reduction
Soffker, M., Trathan, P., Clark, J., Collins, M.A., Belchier, M. and Scott, R. [email protected] Depredation by antarctic fur seals (Arctocephalus gazella), sperm whales (Physeter macrocephalus) and orcas (Orcinus orca) were studied in a Patagonian toothfish (Dissostichus eleginoides) fishery operating around South Georgia. While sperm whales come in contact with about one third of longlines (averaged […]
Release efficiency and selectivity of four different square mesh panel configurations in the Basque mixed bottom trawl fishery | Consortium for Wildlife Bycatch Reduction
Submitted by lweiss on February 13, 2020 – 12:32 hake (Merluccius merluccius), megrim (Lepidorhombus, spp.), and anglerfish (Lophius spp.) Placing the square mesh panel lower in. the trawl net panel increased escape of undersized hake Increasing panel size increased escapes of blue whiting Excluder devices Visual deterrents
The efficacy of illumination to reduce bycatch of eulachon and groundfishes before trawl capture in the eastern North Pacific ocean shrimp fishery | Consortium for Wildlife Bycatch Reduction
Lomeli, M. J., Groth, S. D., Blume, M. T., Herrmann, B., and W.W. Wakefield Canadian Journal of Fisheries and Aquatic Sciences Mark J.M. Lomeli 1-541-867-0544 [email protected] This study examined the extent that eulachon (Thaleichthys pacificus) and groundfishes escape trawls in response to artificial illumination. Using a double-rigged trawler, catch efficiencies were compared for ocean shrimp, […]
Field Study 340 | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on December 10, 2010 – 16:53 Catch rates of yellowfin tuna caught in the fall were higher on circle hooks. Yellowfin tuna were caught four times as often in the mouth when circle hooks were used in the fall. Pelagic stingrays had higher catch rates on J-style hooks and survival rates of […]
Experimental fishing with an “umbrella-and-stones” system to reduce interactions of sperm whales (Physeter macrocephalus) and seabirds with bottom-set longlines for Patagonian toothfish (Dissostichus eleginoides) in the Southwest Atlantic | Consortium for Wildlife Bycatch Reduction
Goetz, S., Laporta, M., Portela, J.M., Santos, M.B., Pierce, G.J. ICES Journal of Marine Science Sabine Goetz: [email protected] The Patagonian toothfish longline fishery in the Southwest Atlantic suffers from depredation of fish by sperm whales and high bycatch rates of seabirds. This study assessed depredation and seabird bycatch using a modified longline with an “umbrella” […]
Field Study 804 | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on June 13, 2013 – 09:25 Performance of pulse trawling compared to conventional beam trawling Significantly fewer plaice and sole Significantly fewer invertebrates; no difference in undersized plaice; significantly fewer undersized sole Modified ground gear (mobile)
Reducing sea turtle bycatch in the Mediterranean mixed demersal fisheries | Consortium for Wildlife Bycatch Reduction
Lucchetti, A., Bargione, G., Petetta, A., Vasapollo, C, and Virgili, M. Frontiers in Marine Science Frontiers Media SA Avenue du Tribunal Fédéral 34 1005 Lausanne Switzerland Lucchetti Alessandro Institute of Marine Science – National Research Council ISMAR-CNR, Largo Fiera della Pesca 1, Ancona, Italy Incidental catch of the loggerhead sea turtle (Caretta caretta) in the […]