Fig. 2. The changes in (A) the rate of oxygen consumption (_O2), (B) heart rate (fH) and (C) body temperature (T_b) for V. rosenbergi at an ambient temperature of 30°C measured every hour between 6 h and 23 h following consumption of a meal (10% of fasted body mass; see Materials and methods). All parameters were significantly higher at 23 h postprandial than they were at 6 h postprandial (P<0.05; see Results). The hatched vertical bar indicates the time at which room temperature was decreased to 14°C in order to begin the hysteresis experiments. Values are means ± S.E.M.