Figure 2. Relationship between the natural log of leaf phosphorus concentration (% dry mass) and the natural log of leaf consumption (C, mg dry/day) after accounting for the effects of larval body mass (mg dry) and environmental temperature (T, in K; k is Boltzmann’s constant, 8.62 × 10−5 eV/K, 1 eV = 1.60 × 10−19 J). Consumption was calculated as dry mass of leaves before trial minus dry mass after trial divided by the number of individuals in trial. The negative relationship (F1,21 = 19.21, P < 0.001) suggests compensatory feeding by larvae in response to nutrient content of leaves.