Bycatch of marine mammals in the Northwest Atlantic during commercial fishery (based on literature materials and observations by the Polar branch of VNIRO in 2013-2020)

This paper describes one of the most acute problem for both environmental companies and fisheries - bycatch marine mammals caused by bioresource exploitation in Northwest Atlantic (NWA). There is no doubt that fishing has some impact on mammals, but information needed to understand extent different gears. The based data from reports observers Polar branch VNIRO vessels 3LMNO NAFO zone (Newfoundland Island), as well literary materials. As a result analysis, it been found small species such gray, common, harp seals Phocidae family, common dolphin, short-finned pilot whale (Delphinidae family) harbour porpoise Phocoenidae family are often injured various Toothed whales (sperm whale, bottlenose whale) least susceptible bycatch. Among baleen whales, humpback northern right minke victims fishing. Gillnets, trawl fishing, longlines greatest threats mammal species, while vulnerable traps, usually catch ten-legged crustaceans Decapoda. Analysis literature shown that, general, stocks NWA, excluding stable condition. manuscript considers measures aimed at reducing mammals.