Effect of Acclimation on the Preferred Body Temperature of the Lizard,Sceloporus occidentalis

The preferred body temperature was determined for several groups of Sceloporus occidentalis previously acclimated to several constant temperature levels. Acclimation to a high temperature (35 degrees C) resulted in the selection of a lowered mean preferred body temperature, whereas acclimation to lower temperatures (12 degrees C and 25 degrees C) produced no change in the preferred body temperature.