MODELING COMPENSATORY GROWTH

1. We formulate a simple, physiologically based model to investigate t he phenomenon of compensatory growth. 2. The model is based upon two k ey assumptions. First, that an individual partitions net assimilate be tween two tissue types: those which can and those which cannot be remo bilized once laid down. Second, that the individual modulates its beha viour and physiology in response to the instantaneous ratio of mobiliz able to non-mobilizable tissues. 3. The model is parameterized for sal monids from published studies of their energetics. Data from aquacultu re studies of fish growth under conditions of fluctuating food are use d to test the model. Using a common parameter set, the model successfu lly reproduces the growth patterns observed in 16 different feeding re gimes.