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Figure 4


Fig. 4. Average torpid metabolic rate (TMR; ±1 s.d.) of bats during passive rewarming from heating of Ta (±1°C). Passive rewarming resulted in an exponential increase in average TMR [(in ml O2 g–1 h–1)=0.015x1.141Ta (°C); r2=0.78). Note that at Ta of 29.1°C (lower set-point of thermal neutral zone) TMR during passive rewarming extrapolated to ~50% of BMR measured at same Ta (Geiser and Brigham, 2000).