Increase in stable isotope ratios driven by metabolic alterations in amphipods exposed to the beta-blocker propranolol - Fig 3

The elemental composition (%C and %N) and the C:N ratio in amphipods (A), body size and protein content (B), biomarkers of oxidative stress (antioxidant capacity assayed as ORAC; lipid peroxidation assayed as TBARS; and the balance between antioxidative and pro-oxidative activities assayed as the ORAC:TBARS ratio) (C), and stable isotope composition (δ15N and δ13C) (D) in the amphipods exposed to propranolol. Control (0 μg L-1 propranolol), PL (Propranolol Low; 100 μg L-1 propranolol), PH (Propranolol High; 1000 μg L-1 propranolol). Data are shown as group means and error bars represent min and max values; n = 15 in all cases. See Table C in S1 File (Supplementary Information) for the mean and SE values for each variable and treatment and Table 3 and Table B in S1 File for the GLM output testing treatment effects.