FISH BY-CATCH IN DUNGENESS CRAB, CANCER MAGISTER, RESEARCH TRAWLS OFF NORTHERN CALIFORNIA 1966-1969

摘要

Seventy-three species of fishes representing 27 families were captured in 227 research trawls off northern California from 1966 through 1969. The five most abundant fishes in 1966 and 1967 were Pacific tomcod, Pacific sanddab, rex sole, English sole,and night smelt. Thefive most frequently observed fishes over all 4 years were Pacific tomcod, Pacific sanddab, English sole, big skate, and butter sole. Twenty-six of these species are common in sport landings and 22 are of commercial value. A number ofthese species have been declared over-fished and recent evidence indicates population declines in several additional species. Within the study area, commercial trawling for ocean shrimp, Panda/us jordani, and bottomfish occurs mostly in depths exceeding 55 m (30 fm).