Figure 3
Partial pressure of CO2 (pCO2, mm of Hg) and O2 (pO2, mm of Hg) in the air cell (mm of Hg) for experiment 1 (a) and experiment 2 (b). Incubation temperature was decreased (low: 34.6°C) or increased (high: 40.6°C) from ED 16 to ED 18.5. The control group was incubated at 37.6°C throughout incubation. Different small letters (a, b) indicate a significant difference between treatment groups for pCO2 in the air cell at that time point (P < 0.05). Different capital letters (A, B) indicate a significant difference between treatment groups for pO2 in the air cell at that time point (P < 0.05); n = 12. Data are shown as mean ± SEM. ED = embryonic day; IP = internal pipping.