Fig. 6. Utilization plots describing the bivariate means (±1 s.e.m.) of (A) nitrogen growth versus total nitrogen consumption and of (B) lipid growth versus total carbohydrate consumption in the no-choice test. Growth data presented for SV and HS caterpillars are corrected by multiplying the factor of 0.980 and 1.579 to each. This is done to account for their difference in initial fresh mass relative to HV caterpillars. In each genotype, the points from left to right are 7:35, 14:28, 21:21, 28:14 and 35:7 P:C diets for the nitrogen utilization plot, whereas such order is reversed for the lipid plot. Diamond symbols indicate the mean reference values for animals that are free to choose between 35:7 and 14:28 P:C diets (data adapted from Figs 1 and 5).