The effect of meal size on the gastric evacuation rate of burbot Lora lota
(L.), was determined at a constant temperature of 1.5 degrees C. Burbot wer
e fed vendace Coregonus albula (L.), in varying amounts from 1.0% to 12.6%
of burbot weight. Although gastric evacuation rate decreased exponentially
with increasing meal size, the absolute amount of food evacuated per day (g
. day(-1)) increased when meal size increased. The estimated maximum daily
gastric evacuation rates were 0.8, 1.3 and 1.6 g/day with meal sizes 1%, 5
% and 10% of burbot weight (200 g). No difference in gastric evacuation rat
e was observed between meals of the same size (8 g) but which consisted of
either one or three vendace.