Figure 2.

Effects of incubation temperature on hatching success and hatchling morphology for clutches laid at Long Beach (LB: open circles, dashed lines) and Northeast Bay (NEB: filled diamonds, solid lines). (a) Small symbols show hatching success of in situ nests across a natural range of incubation temperatures with lines in bold fitted using logistic regression. Large symbols show mean hatching success from a common-garden experiment where eggs were incubated at either 29°C (‘cool’) or 32.5°C (‘hot’). Values are binomial estimates ± 1 s.e. Faded lines showing overall temperature–survival curves were fitted using logistic regression with data from in situ nests and constrained to pass through estimates from the common-garden experiment. Parts (b,c) show effects of incubation temperature and beach of origin on hatchling straight carapace length (SCL) and residual body mass (controlling for SCL), respectively, in the common-garden experiment (estimates ± 1 s.e. from GLMM).