Fig. 3. Effects of temperature acclimation on maximum activities of (A) citrate synthase and (B) cytochrome c oxidase in white muscle of G. morhua. Activities were measured at 10°C. Values are means ± s.e.m. (N=5–6). The data were tested for outliers at the 95% significance level using Nalimov'stest (Noack, 1980). *Significant difference from the warm-acclimated control group within a population; *significant difference between populations at the same acclimation temperature.