ON INTERACTIONS BETWEEN MARINE MAMMALS AND FISHING FLEET DURING WINTER-AUTUMN WALLEYE POLLOCK AND HERRING FISHERY CAMPAIGN 2017 IN THE SEA OF OKHOTSK
https://doi.org/10.15853/2072-8212.2019.54.7-22
Abstract
The species composition and structure of marine mammals within the area of fishing of walleye pollock in the Sea of Okhotsk in 2017 was considered. Eleven species of marine mammals with the total number of 1306 individuals are recorded in the area. Steller sea lion was the most frequent (46.8%) in the records, and following next frequent species are: northern fur seal (13.3%), largha seal (8.9%), minke whale (8.4%) and ribbon seals (7.9%). Effects of specialized trawl fishing on the marine mammals were described, and specifics of interacting with fishing vessels was figured out. Four species among eleven recorded demonstrated various interest or reactions to fishing vessels when approaching the fleet. Steller sea lions and minke whales demonstrated obvious interest to activities of fishing vessels, keeping somewhere near feeding on the fish falling out of trawls or on waste from catch processing, largha seals and lionfishes were indifferent to the fishing fleet, but activities of the fleet near the ice edges made them visibly nervous. No cases of accidental catching marine mammals into the fishing gears recorded.
About the Author
I. A. Blokhin
Камчатский филиал Всероссийского научно-исследовательского института рыбного хозяйства и океанографии («КамчатНИРО»)
Russian Federation
Russian Federation
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Review
For citations:
Blokhin I.A. ON INTERACTIONS BETWEEN MARINE MAMMALS AND FISHING FLEET DURING WINTER-AUTUMN WALLEYE POLLOCK AND HERRING FISHERY CAMPAIGN 2017 IN THE SEA OF OKHOTSK. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2019;1(54):7-22. (In Russ.) https://doi.org/10.15853/2072-8212.2019.54.7-22
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