Fig. 3.

Correlations between CT_min at the individual temperatures and slope of CT_min across temperatures: a 17 °C, b 20 °C, c 23 °C, d 26 °C and e 29 °C. Each dot represents one DGRP line, and the full black lines are the regression lines visualising the phenotypic correlations. In each environment Pearson’s product moment correlation coefficients are shown for the phenotypic correlations, r_p (SE in parenthesis) along with the printed genetic correlations, r_g (SE in parenthesis) between CT_min. Asterisks designate correlations that are significantly different from 0, i.e., the estimate deviate more than 1.645 × SE from 0 (p < 0.05). Correlations that are not different from 0 are designated “ns”. In pairwise comparisons of the correlations, significantly different correlations are denoted with separate letters after the correlation coefficients, e.g., r_g (CT_min 17 °C, slope) vs. r_g (CT_min 20 °C, slope). Phenotypic and genetic correlations are compared separately. Comparisons of these correlations are based on Fisher’s z transformation (n = 166). The two arrows in panel a shows the direction of increased fitness (here opposite of increased CT_min) and increased plasticity of CT_min, respectively, for all panels