Results of general linear models analysing variation in body size and metabolic rates.

(a) Comparison of body mass among populations. (b) Comparison of routine metabolic rates in wild-caught individuals. (c) Comparison of simulated total metabolic rates. (d) Comparison of routine metabolic rates in wild-caught and common-garden raised individuals for a subset of populations. Note that the effect size for each of the terms in a model was estimated by use of partial eta squared (ηp2). Relative variance was calculated as the partial eta squared for a particular term divided by the maximum partial eta squared in the model.