DIET OF THE TEXAS YELLOW-FACED RACERUNNER, CNEMIDOPHORUS SEXLINEATUS STEPHENSI (SAURIA: TEIIDAE), IN SOUTHERN TEXAS

摘要

The diet of Cnemidophorus sexlineatus Stephensi was determined from analysis of stomach contents of four samples of lizards collected from Cameron, Kenedy and Brooks counties. Orthopterans and spiders were the most important components of the diet of C. sexlineatus stephensi, though several other kinds of insects were also eaten. Termites were seldom found in lizard stomachs, but when they were, they were often present in large numbers. There was a significant positive correlation between lizard size and total volume of prey consumed, but not between lizard size and number of prey consumed. Overall, the diet of C. sexlineatus stephensi in south Texas resembles the diets of C. sexlineatus populations in the central U.S. more closely than the diet of the closely related unisexual species of the Cnemidophorus laredoensis complex in the Rio Grande Valley.