Abstract
The rate of gastric evacuation of winter flounder, Pseudopleuronectes americanus, calculated from the rate of hunger return (determined as the amount eaten voluntarily at some time following a satiation meal) at ~ 6 °C was exponential and equaled 0.079 h−1. Feeding voluntarily on small pieces of squid, the fish ate 1.8–2.4% of their body weight per day, the actual weight of food consumed varying directly with fish weight so that ln wt food (g) = −2.988 + 0.780 ln wet wt fish (g). Stomach volume also varied with fish weight: stomach vol (cm3) = 0.923 + 0.039 wet wt fish (g). Preliminary estimates of daily ration using several independent models agree closely with laboratory measurements of daily consumption.Key words: winter flounder, gastric, evacuation
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