Abstract
1. 1. Oxygen consumption and carbon dioxide output of a semi-aquatic lizard, Physignathus lesueurii were measured over a range of temperatures and the contribution of the skin as a respiratory surface was assessed. 2. 2. Both total oxygen consumption and total CO 2 output increased logarithmically with temperature: log V ̇ o 2 = −1.97 + 0.028T log V ̇ co 2 = −2.01 + 0.019T 3. 3. Cutaneous oxygen uptake contributed little to total oxygen uptake. 4. 4. Fifteen percent of CO 2 output was eliminated through the skin at 25°C, and this percentage decreased with increasing temperature. 5. 5. R E decreased with increasing temperature: R E = 1.02 — 0.018 T.
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