Submitted by Kate McClellan on July 30, 2012 – 16:18 16/0 hooks resulted in a non-statistically significant decrease in catchability compared to size 2 J hooks, but statistically significant decrease compared to size 4 and 5 J hooks Circle hooks captured fewer (2) loggerheads compared to 2J hooks (9) Caretta caretta (Loggerhead turtle)
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Field Study 657 | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on April 30, 2012 – 15:12 Tuna catches were significantly higher, but lengths for bigeye and skipjack were smaller; shortbill spearfish and striped marlin catch was lower; no difference in swordfish catch rates, but lengths were greater Blue and oceanic whitetip shark bycatch increased.
Migrating humpback whales show no detectable response to whale alarms off Sydney, Australia | Consortium for Wildlife Bycatch Reduction
Pirotta, V., Slip, D., Jonsen, I.D., Peddemors, V.M., Cato, D.H., Ross, G. and R. Harcourt Endangered Species Research Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia; [email protected] The ability of acoustic alarms to alert migrating humpback whales (Megaptera novaeangliae) to fishing gear was tested. Two alarms were used, each with a distinct tone. […]
Evaluation of a bycatch reduction technology by fishermen: a case study from Sicily | Consortium for Wildlife Bycatch Reduction
Piovano, S., G. Basciano, Y. Swimmer, C. Giacoma [email protected] The proven effectiveness of a bycatch reduction technology (BRT) does not guarantee its adoption by fishermen. This case study evaluated the willingness of Sicilian longline fishermen to use relatively large circle hooks (16/0) as a BRT for loggerhead sea turtles (Caretta caretta). Fishermen tested circle hooks […]
Performance in 2005 of an alternative leader design on the bycatch of sea turtles and the catch of finfish in Chesapeake Bay pound nets, offshore Kiptopeake, VA: Data and results of preliminary analyses | Consortium for Wildlife Bycatch Reduction
DeAlteris, J., R. Silva, E. Estey, K. Tesla, and T. Newcomb Final report to NMFS. DeAlteris Associates, Inc., Jamestown, RI An alternative leader design reduced loggerhead (Caretta caretta) sea turtle interactions in a Chesapeake Bay pound net fishery for finfish. There was no change in catch of weakfish (Cynoscion regalis), croaker (Micropogonias undulates), and harvestfish […]
Mitigation of harbor porpoise (Phocoena phocoena) by-catch in the gillnet fishery in the lower Bay of Fundy | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on November 30, 2016 – 17:19 Atlantic cod, Atlantic herring, pollock There was no significant difference in catch rates when alarms were and were not used. There was a 77% reduction in porpoise bycatch when acoustic alarms were used. Phocoena phocoena (Harbor porpoise)
The effects of catch-and-release angling on the growth and survival of juvenile white seabass captured on offset circle and J-type hooks | Consortium for Wildlife Bycatch Reduction
Aalbers, S.A., Stutzer, G.M. and Drawbridge, M.A. North American Journal of Fisheries Management Experiments were conducted in California to determine the effect of hook type (circle and J-type) on anatomical hook location and subsequent growth and mortality rates of white seabass. Juvenile white seabass were captured with 4/0 offset circle hooks, J-type hooks or a […]
Bycatch mortality can cause extirpation in four freshwater turtle species | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on March 16, 2015 – 10:54 Lake Opinicon, Ontario, Canada Bycatch mortality can cause extirpation in four freshwater turtle species The excluder device reduced bycatch of turtles by 95-100%
Decreased feeding ability of a minke whale (Balaenoptera acutorostrata) with entanglement-like injuries | Consortium for Wildlife Bycatch Reduction
Kot, B.W., Ramp, C. and R. Sears Wiley Periodicals, Inc., Malden, MA USA Lead author: Brian W. Kot, [email protected] This investigation details an unusual encounter with a lunge-feeding minke whale with fresh entanglement-like injuries to its head and ventral pouch. It also discusses results from a short-term comparative study that tested whether the whale fed […]
An assessment of post-release mortality for a commonly discarded deep-sea isopod (Bathynomus giganteus) using reflex impairment | Consortium for Wildlife Bycatch Reduction
Talwar, B., E. Brooks, and R.D. Grubbs ICES Journal of Marine Science Estimates of post-release mortality (PRM) rates for discarded bycatch are largely unknown across marine fisheries and represent a substantial source of uncertainty when estimating total fishery mortality. One way to predict PRM is through the use of reflex action mortality predictors (RAMP), whereby […]
Effect of acoustic deterrents on the behavior of common dolphins (Delphinus delphis) | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on November 10, 2016 – 15:59 CETASAVER and Dolphin Deterrent Device resulted in mild responses by dolphins. BIM pingers elicited no response. Small Cetaceans (maximum length < 7.5 meters)
Circle hooks: developing better fishing practices in the artisanal longline fisheries of the Eastern Pacific Ocean | Consortium for Wildlife Bycatch Reduction
Andraka, S., Mug, M., Hall, M., Pons, M., et al. [email protected] (S.Andraka), moisesmug61@ gmail.com (M.Mug), [email protected] (M.Hall), [email protected],(M.Pons), [email protected] (L.Pacheco), [email protected] (M.Parrales), [email protected] (L.Rendón), [email protected] (M.L.Parga), [email protected] (T.Mituhasi), [email protected] (Á.Segura), dortega @wwfmex.org (D.Ortega), [email protected] (E.Villagrán), [email protected] (S.Pérez), [email protected] (C.dePaz), [email protected] (S.Siu),[email protected] (V.Gadea), [email protected] (J.Caicedo), [email protected] (L.A.Zapata), [email protected] (J.Martínez), [email protected] (P.Guerrero), [email protected] (M.Valqui), [email protected] (N.Vogel) An […]
Selective characteristics of a shark-excluding grid device in a Mediterranean trawl | Consortium for Wildlife Bycatch Reduction
Submitted by morgaac on August 28, 2015 – 08:05 Norway lobster (Nephrops norvegicus) and greater forkbeard (Phycis blennoides) 90 mm excluder grid reduced catches of greater forkbeard and to a lesser extend Norway lobster 90 mm excluder grid did not reduce catches of blackmouth catshark (Galeus melastomus)
The effect of artificial illumination on Chinook salmon behavior and their escapement out of a midwater trawl bycatch reduction device | Consortium for Wildlife Bycatch Reduction
Submitted by lweiss on December 13, 2019 – 10:34 Pacific hake (Merluccius productus) Artificial illumination can influence where Chinook salmon exit out of a bycatch reduction device, and can be used to enhance overall escapement. Oncorhynchus tshawytscha (Chinook salmon)