June 2023

Submitted by lweiss on March 9, 2020 – 10:46 Sablefish (Anoplopoma fimbria) Scaring lines had no effect on target catch. Night setting increased average retained catch by more than 40%. Albatross attacked baited hooks on floated longlines at significantly higher rates than non-floated longlines, especially beyond the aerial extent of bird scaring lines. Additionally, night […]

Bordino, P., Kraus, S., Albareda, D., Fazio, A., Palmerio, A., Mendez, M. & Botta, S. Pingers are effective in reducing the bycatch of Franciscana dolphins (Pontoporia blainvillei) but increase interactions between fishing gear and South American sea lions (Otaria byronia) in an Argentinian bottom gillnet fishery.

Barham, E.G., Taguchi, W.K. and Reilly, S.B. Marine Fisheries Reserach The impact of Medina panels attached to tuna purse seine nets operating in the US fishery was investigating for their effect on porpoise mortality. Medina panels are reduced mesh size netting hung from 2-inch mesh webbing on the purse seine. The authors took measurements of […]

Baez, J.C., Garcia-Barcelona, S., Mendoza, M., Ortiz de Urbina, J.M., Real, R., Macias, D. DOI 10.1007/s10531-014-0625-6 J.C. Baez: [email protected]; [email protected] Cory’s shearwater, Calonectris diomedea, is the main seabird species incidentally caught by the Spanish longline fleet in the western Mediterranean Sea. The authors used onboard observer data to model the longline bycatch of Cory’s shearwaters […]

EdgeTech is a leading manufacturer of underwater technology solutions.  The company is known worldwide for its high quality products that include: deep sea acoustic releases, pop-up release systems, shallow water and long life acoustic releases, side scan sonars, sub-bottom profilers, bathymetry systems, AUV and ROV-based sonar systems, combined and customized solutions.  In addition to the […]

In 2015, New England Aquarium researchers and collaborators published a paper in Conservation Biology titled Effects of fishing rope strength on the severity of large whale entanglements correlating rope strength with increased risk and severity of large whale entanglements (Knowlton et al. 2016). As a result of that study, the authors recommended that rope strengths […]

Gilman, E., Chaloupka, M., Read, A., Dalzell, P., Holetschek, J. and Curtice, C. Aquatic Conservation: Marine and Freshwater Ecosystems Analyses of the Hawaiian pelagic longline fishery were conducted to determine what factors, including hook type (J or circle) and location (sea mount v open ocean), have impacted the catch of both target and bycatch species. […]

Most bycatch reduction techniques so far implemented around the world have been in commercial fisheries within developed countries, which have relatively strong regulatory and enforcement capacity, and that generally can absorb increased expenses or reduced revenue from regulated modifications to fishing methods. For several years, the NEAq has been working with local fishermen, the Argentinian […]

Submitted by morgaac on September 4, 2015 – 09:49 Catch rates were lower when marine mammals were present Sperm whales interacted with longlines 25% of the time; orcas interacted only 5% of the time could remove half of the catch; fur seal interactions have declined since 2009

EdgeTech is a leading manufacturer of underwater technology solutions.  The company is known worldwide for its high quality products that include: deep sea acoustic releases, pop-up release systems, shallow water and long life acoustic releases, side scan sonars, sub-bottom profilers, bathymetry systems, AUV and ROV-based sonar systems, combined and customized solutions.  In addition to the […]

Many species of elasmobranchs (sharks and rays) are incidentally caught in pelagic longline fisheries. Sometimes shark bycatch exceeds the amount of target fish that is caught (e.g. tuna).  An array of recent studies have shown that some species of sharks have an aversion resonse to certain electromagnetic metals, alloys, and strong magnets. This is a […]

Submitted by morgaac on June 29, 2016 – 13:33 Baja California Sur, Mexico Buoyless nets reduce sea turtle bycatch in coastal net fisheries Grouper, halibut and guitar-fish No effect on target catch rates Buoyless nets reduced bycatch by 68% Caretta caretta (Loggerhead turtle) Sub-surface sets (gillnets)

In the absence of direct observations of entanglement events involving baleen whales, the goal of this project is to better understand the dynamics of rope entanglements using computer models. Dr. Laurens Howle is creating a whale entanglement modeling system as an aid to understanding how whale behaviors and the interaction of gear and whales in […]

Gilman, E., C. Boggs, and N. Brothers. Ocean and Coastal Management 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.