Mortality from longline bycatch threatens marine mammal species and populations such as the false killer whale (Pseudorca crassidens) in the insular Hawaiian Islands, and Risso’s dolphin (Grampus griseus) and pilot whales (Globicephala spp.) in the Northwest Atlantic. Fishermen also lose valuable target catch due to marine mammal depredation, and as a result, may face fishing […]
February 2017
International Marine Mammal Bycatch Assessment | Consortium for Wildlife Bycatch Reduction
Bycatch is the principal and most immediate threat to many species and populations of marine mammals. In many parts of the world, especially in countries with large artisanal fishing sectors, the extent of this bycatch is largely undocumented. This project will take the initial step of understanding the bycatch associated with particular fisheries—industrial and small-scale—in […]
Acoustic harassment devices | Consortium for Wildlife Bycatch Reduction
Devices that emit sounds of such high intensity that they cause pain or alarm in certain underwater species. The minimum sound level is approximately 200 dB re 1 _Pa @ 1m. References for AHDs primarily dealt with aquaculture operations. These devices may exclude some animals from important habitat (Olesiuk et al., 2002), and pose a […]