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Table 2.

Cutaneous gas exchange rates in hydrated and dehydrated toads*

VariableHydratedDehydrated to 80%
N 
Hydrated body mass (g) 50.4±43.2 40.4±34.9 
DSkinC18O (μmol g−1h−1 kPa) 0.49±0.03 0.28±0.09 
O2 (μmol g−1 h−11.43±0.47 1.48±0.15 
CO2 (μmol g−1 h−11.75±0.85 1.72±0.04 
RSkin 1.36±0.56 1.13±0.08 
VariableHydratedDehydrated to 80%
N 
Hydrated body mass (g) 50.4±43.2 40.4±34.9 
DSkinC18O (μmol g−1h−1 kPa) 0.49±0.03 0.28±0.09 
O2 (μmol g−1 h−11.43±0.47 1.48±0.15 
CO2 (μmol g−1 h−11.75±0.85 1.72±0.04 
RSkin 1.36±0.56 1.13±0.08 
*

Comparison of cutaneous carbon monoxide diffusion capacity(DSkinC18O), cutaneous oxygen uptake(O2), cutaneous carbon dioxide elimination(CO2), and cutaneous gas exchange ratio (RSkin,CO2:O2)between hydrated toads and toads dehydrated to 80% of their hydrated body mass at 23-25°C.

Dehydrated values that are significantly different (P<0.05)from hydrated values. Means ±1 s.d. are given.

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