Daily rations of cod from the Barents Sea

Abstract

Diurnal feeding rhythms and daily diets of the North-East Arctic cod were investigated based on data obtained at several stations made in the summer of 1988-1989. A well-pronounced feeding rhythmicity was recorded under conditions of a stable occurence of food organisms and in case cod fed on a single prey species. The daily rations of cod which fed on Euphausiacea, Themisto, fish and shrimps varied from 2.10 to 3.7 % and from 0.28 to 0.99 % of the body weight in 1988 and 1989, respectfully.