Fig. 5.

Measured (a) haematocrit and (b) haemoglobin concentration from stickleback exposed to different levels of air saturation (100% or 50% AS) in the presence or absence of copper (0 or 20 μg Cu/L) (n = 8 fish for each treatment group). Data are presented as average ± standard error mean. Statistical comparisons were conducted using accepted minimum adequate models (analysis of variance model, R; P < 0.05) with model details reported in Table S3.