Figure 1.

The growth rate (cm day⁻¹) (A), yolk-sac consumption rate (cm² day⁻¹) (B), and embryonic oxygen uptake (mg O₂ embryo h⁻¹⁾ (C), over the in ovo incubation period at 27, 29, and 31 °C. The embryonic length data were fit using a mixed linear model (S1A), and yolk-sac consumption and RMR were fit with a generalized additive model (GAM) (S1B,C). Model fits are represented by solid lines, and 95% confidence intervals are represented by dashed lines. Model fits were considered significant at α = 0.05. The vertical lines represent the mean incubation time at each temperature treatment, and the shaded boxes represent the standard error around the mean.