Figure 3 : Relationship between standard metabolic rate (SMR) and size-corrected Δ13C, and size-corrected Δ15N of muscle and liver tissue in perch individuals, respectively. Colors depict different weight classes of perch at the beginning of the experiment. Regression lines (including regression coefficient R2) in a) indicate significant linear regressions between size-corrected Δ13C and SMR in muscle tissue.