Publication Abstract

Gastric evacuation in cod, Gadus morhua

P.J. Bromley

This paper describes an investigation of the shape of the gastric evacuation curve of cod feeding on whole natural prey. Linear gastric evacuation models fitted the results for the evacuation of sprats (Sprattus sprattus) and Norway lobsters (Nephrops norvegicus). Single and multiple meals of sprat were evacuated from the stomach at similar rates but these tended to be slightly higher than the average feeding rates sustained by cod in longer term feeding trials. It was found that sprats were evacuated at a much faster rate than Nephrops, which if translated generally would appear to put cod feeding on Crustacea at a disadvantage.

Reference:

P.J. Bromley, 1991. Gastric evacuation in cod, Gadus morhua. ICES Marine Science Symposium, 193: 93-98.