Body Temperatures of Field-Active Amazonian Savanna Lizards

Multivariate analyses indicated that body temperatures of free-living savanna lizards (Ameiva ameiva, Cnemidophorus lemniscatus, Kentropyx striatus, and Anolis auratus) are influenced by sex, environmental temperatures, and amount of food in the stomach. Male C. lemniscatus have lower temperatures than females during the breeding season. Higher ambient temperatures were generally associated with higher body temperatures, except for C. lemniscatus whose body temperatures appear to reach a plateau (39 C) when air temperatures exceed 30 C. Cnemidophorus lemniscatus with more food in their stomachs had higher temperatures but the relationship was weak and may not be direct