. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Demersal fish 1023 presumably because of reduced abundance of yellow- fin sole. The Soviet flounder fishery, discontinued in 1973, was not resumed until 1978, after the resource recovered (Bakkala et al. 1979). The Soviet fishery for Pacific ocean perch and other rockfish began in 1960, when 25-30 trawlers fished along the edge of the continental shelf in the eastern and central Bering Sea. Beginning in 1963, effort for Pacific ocean perch became centered in Aleu
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Demersal fish 1023 presumably because of reduced abundance of yellow- fin sole. The Soviet flounder fishery, discontinued in 1973, was not resumed until 1978, after the resource recovered (Bakkala et al. 1979). The Soviet fishery for Pacific ocean perch and other rockfish began in 1960, when 25-30 trawlers fished along the edge of the continental shelf in the eastern and central Bering Sea. Beginning in 1963, effort for Pacific ocean perch became centered in Aleutian Island waters and the Gulf of Alaska; since then catches in the eastern Bering Sea have rep- resented only a by-catch of the pollock fishery. Soviet trawlers caught a maximum of 34,000 mt of Pacific ocean perch and other rockfish in the eastern Bering Sea in 1961. Rockfish have been processed by freezing in the round, headed and gutted, or as fillets. The fishery that eventually developed into the pollock fishery began in 1967, targeting at first on sablefish and large flounders (arrowtooth flounder and Greenland turbot) on the outer continental shelf and slope of the southeastern Bering Sea. This fishery gradually expanded northward along the edge of the continental shelf and by 1969 had be- come a year-round operation, taking on the general appearance that has characterized it to the present time. Two principal fishing areas were used, one immediately north of the eastern Aleutian Islands and the other northwest of the Pribilof Islands. Effort normally peaked in late winter, when fishing vessels from the Pacific herring and flounder fisheries joined the pollock fleet. The emphasis of this fishery shifted to walleye pollock in the early 1970's, with catches rising from about 36,000 mt in 1970 to 234,000 mt in 1971. Pollock has remained the predominant target species of the Soviet fishery. The peak catch of pollock occurred in 1974, when almost 310,000 mt was taken. Produc
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