Fig. 7.

Breathing rate (left) and mass-corrected oxygen consumption per breath (right) of 3 month old alligators in different oxygen atmospheres under absorptive and post-absorptive (standard) conditions. Hyperoxic alligators show significantly lower breathing rates than their siblings in normoxic and hypoxic groups. Conversely, each breath supports greater oxygen consumption in hyperoxic animals than in other groups. Statistical significance between groups was calculated by ANOVA with post hoc Tukey–Kramer (^*P<0.05). Bar height and error bars indicate the mean ± s.e.m.