Fig. 2.

Measured copper concentrations (mean μg Cu/g ± standard error mean) in (a) Gill and (b) Liver of male sticklebacks exposed to different levels of air saturation (100%; 75% and 50% AS) in the presence or absence of copper (0 or 20 μg Cu/L) (n = 7/8 fish for each treatment group). Data are presented as average +/- standard error of the mean. Statistical comparisons were conducted using accepted minimum adequate models (analysis of variance model, R; P < 0.05) with model details reported in Table 1.