Walleye pollock of the Bering Sea: features of distribution and biology, stocks, fishery

Abstract

The purpose of the work: to identify the features of the distribution and biology of walleye pollock Gadus chalcogrammus, as well as to provide information on the reserves and development of its resources in the Bering Sea.Methods used: to achieve the goal, data on distribution, biology, biomass and fishery of walleye pollock were analyzed.Novelty: elements of novelty are generalized modern materials on the distribution, biology, stocks and fishery of walleye pollock.Practical significance: at the present stage, the East Bering Sea and northwestern pollock populations are at the average long-term level of biomass, their annual changes largely depend on the background conditions of the natural environment and the development of the food supply, which determine the scale of fish migration from the southeastern part of the Bering Sea to the northwestern and back. In the West Bering Sea walleye pollock, there is a trend towards a gradual recovery of stocks after a period of minimum values  in the late 1990s — e arly 2000s. In general, the current state of walleye pollock stocks in the Bering Sea is characterized as stable, which maintains the fishery at a relatively high level. The results obtained in this work on the characteristics of the distribution and biology of walleye pollock, the state of its stocks and fishing will improve the efficiency of using the raw material base of marine fish in the Bering Sea.