. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 21-22 61-62 101-102 141-142 181-182 41-42 81-82 121-122 161162 CARAPACE LENGTH(MM) Figure 61-12b. Size-frequency distributions of blue king crab from the 1979 survey. Size at recruitment is approxi- mately 135 mm. commercial catch was unknown and biologists were not interested in Tanner crab during early explora- tory cruises for king crab, it was many years before the distributions of C. bairdi and C. opilio in the eastern Bering Sea were fully documented. Altho
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 21-22 61-62 101-102 141-142 181-182 41-42 81-82 121-122 161162 CARAPACE LENGTH(MM) Figure 61-12b. Size-frequency distributions of blue king crab from the 1979 survey. Size at recruitment is approxi- mately 135 mm. commercial catch was unknown and biologists were not interested in Tanner crab during early explora- tory cruises for king crab, it was many years before the distributions of C. bairdi and C. opilio in the eastern Bering Sea were fully documented. Although 1974 surveys by Japan, the Soviet Union, £ind the United States covered most of the range of C. bairdi in the eastern Bering Sea (Fig. 61-13), it was 1975 before the entire range was known as a result of the 1975 survey by the Outer Continental Shelf Environmental Assessment Pro- gram (Pereyra et al. 1976). It remained for the 1976 OCSEAP survey of Norton Sound and the Chukchi Sea to document the northern extension of C. opilio in the eastern Bering Sea (Wolotira et al. 1977). The probable range of C. opilio in the eastern Bering Sea (Fig. 61-14) has not been surveyed in any one year, and the distribution of C. opilio in the. Figure 61-13. Distribution of the Tanner crab (Chionoe- cetes bairdi) in the eastern Bering Sea. Darkly shaded portions indicate areas of consistently high abundance. St. Lawrence Island area is still a matter of some speculation. The distribution of C. bairdi is strongly associated with the coast of the Alaska Peninsula, continental slope areas, and the Pribilof Islands (Fig. 61-13). Surveys have mapped two centers of abundance in most years. Most of the population has generally been found in the area north of the Alaska Peninsula; another area of concentration has centered on the Pribilof Islands. The two centers of abundance are connected by a region where C. bairdi, although lower in abundance, is certainly not rare. Surveys from 1974 onward showe
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