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Figure 2


Fig. 2. Critical thermal maxima (CTMax; A) and minima (CTMin; B) for northern (NH, triangles) and southern (GA, circles) killifish acclimated to temperatures between 2.3°C and 34.0°C and a 12 h:12 h L:D photoperiod. Second order regression models of CTMax or CTMin within a population are shown. Significant differences in CTMax or CTMin within a population are indicated by different letters. An asterisk indicates a significant difference in critical thermal limit between populations at a given acclimation temperature. Values are mean ± s.d. (N=12-15, as indicated in Table 3); P<0.001 for all significant comparisons.