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Fig. 1. Experiment 1. Bivariate means (± s.e.m.) of protein (P) and
carbohydrate (C) consumption by insects reared on different diets. (A)
Consumption rate per day, (B) total consumption over the entire larval
stadium. The lines indicate the expectation under the equal distance rule: a
straight line of slope 1. Points on this line indicate that insects on
these diets consumed the same total amount of nutrients (and hence total
amount of food) during the time period in question.