maximios

DREDGE A dredge consists of a metal mesh bag held open by a frame. This type of gear is dragged along the seafloor to collect bottom-dwelling organism; shellfish are particularly targeted. Some dredges have teeth or rakes that penetrate the sediment and remove large infauna. Multiple dredges can be use simultaneously via a connecting beam […]

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 […]

Consultancy Opportunity Lead National Fisheries Data Collectors International Marine Mammal Bycatch Assessment Project Summary The New England Aquarium is seeking to hire three National Lead Data Collectors for a project that is assessing marine mammal bycatch in three countries: Ecuador, Chile, and Thailand. Bycatch is the principal and most immediate threat to many species and […]

Consultancy Opportunity Lead National Fisheries Data Collectors International Marine Mammal Bycatch Assessment Project Summary The New England Aquarium is seeking to hire three National Lead Data Collectors for a project that is assessing marine mammal bycatch in three countries: Ecuador, Chile, and Thailand. Bycatch is the principal and most immediate threat to many species and […]

Domingo, A., Pons, M., Jimenez, S., Miller, P., Barcelo, C. and Swimmer, Y. Bulletin of Marine Science Tests were conducted aboard pelagic longline vessels fishing off the coast of Uruguay, to determine the effect of hook type (circle hook vs J-hook) on the catch and length composition of target and non-target species.  Both American and […]

Submitted by morgaac on August 25, 2015 – 10:13 Reducing longline bycatch: the larger the hook, the fewer the stingrays Central Mediterranean SEa Bait size did not have a significant effect on stingray catch rates

Submitted by morgaac on August 25, 2015 – 10:11 Reducing longline bycatch: the larger the hook, the fewer the stingrays Central Mediterranean SEa Light attractants did not have a significant effect on stringray catch rate

Changing the type of bait, such as switching from squid to mackerel, to deter non-target animals (such as sea turtles) that prefer one type of bait versus another. Submitted by morgaac on August 25, 2015 – 10:13 Submitted by morgaac on September 14, 2012 – 17:06 Circle hooks decreased loggerhead and leatherback catch; even more […]

Mangel, J.C., Alfaro-Shigueto, J., Witt, M.J., Hodgson, D.J., and Godley, B.J. Jeffrey Mangel: [email protected] Acoustic pingers (Dukane Netmark 1000; frequency of 10-12 kHz and emit 300 ms tone every 4 sec with a source level range of 120-146 dB) were assessed to determine the effectiveness for reducing bycatch of dolphins and porpoises (common dolphins, dusky […]

Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier, C. Guinet The Patagonian toothfish longline fishery has high levels of depredation by killer and sperm whales, which puts the whales at risk of being bycatch. Observations from 2003 to 2008 revealed significant variations of interaction rates with killer whales between vessels, suggesting the influence […]

Kot, B.W., R. Sears, A. Anis, D.P. Nowacek, J. Gedamke, and C.D. Marshall Journal of Experimental Marine Biology and Ecology Elsevier, Amsterdam, The Netherlands Lead author: Brian W. Kot, [email protected] This investigation involved systematic trials and controls testing for behavioral responses of minke whales (N=42) to experimental fishing gear in a coastal environment.  A remote sensing system was […]

Moreno, C.A., Castro, R., Mújica, L.J., and Reyes, P. C. Moreno: [email protected] A modified longline system with a net sleeve and weight on the secondary vertical line was tested in the Chilean Patagonian toothfish fishery. A net sleeve that deploys to cover the fish/hook when hauled and a weight were attached to the vertical hook […]

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 […]

Piovano, S., A. Farcomeni, and C. Giacoma African Journal of Marine Science [email protected] The biting behaviour of the loggerhead sea turtle, Caretta caretta, a high bycatch species by longling fishing gear, was studied on 30 wild specimens held temporarily at rescue centers. Chemicals from squid baits elicited significantly more biting behaviour than those from mackerel […]