Temperature reaction norms. Reaction norms illustrating the effect of treatment temperature on growth rate (estimated as the slope ± se of deme-wise linear regressions of ln(length) on degree-days for each temperature) for the four demes studied. Bold lines indicate SW demes.
Thomassen et al. BMC Evolutionary Biology 2011 11:360 doi:10.1186/1471-2148-11-360