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- W854617962 abstract "Laboratory analysis and compilation of food habits data from Pacific salmon (Oncorhynchus spp.) collected in fall 2002 from the Bering Sea were completed. Samples collected in summer 1991-2002 were analyzed for seasonal (summer-fall 2002) and long-term comparisons of salmon diets. Samples were grouped into three major habitats, representative of the distribution of Yukon River salmon: (1) eastern Bering Sea shelf ( 200-m depth contour), and (3) Aleutian Islands. In fall diet overlap values (modified Schoener’s index) were low to moderate for sockeye (O. nerka) and chum (O. keta) salmon (49%, basin), sockeye and chinook (O. tshawytscha, 21%, basin), and chum and chinook (28% basin, 30% shelf). Diet overlap between sockeye and chum salmon was very high (80%) in the Aleutian Islands, where both species consumed macro-zooplankton (crustaceans and pteropods), and was reduced when chum salmon consumed gelatinous zooplankton (medusae and ctenophores). In contrast, chinook salmon consumed predominately small nekton (squid and fish). Shifts in prey composition of sockeye, chum, and chinook salmon between seasons, habitats, and salmon age groups were likely due to changes in prey availability. If prey availability is reduced by poor ocean conditions, then increased food competition could decrease growth and survival of Yukon River salmon in the Bering Sea and Aleutian Islands." @default.
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- W854617962 date "2003-01-01" @default.
- W854617962 modified "2023-09-24" @default.
- W854617962 title "Bering Sea Salmon Food Habits: Diet Overlap in Fall and Potential for Interactions Among Salmon." @default.
- W854617962 hasPublicationYear "2003" @default.
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