Baseline survey of Texas horned lizards, Phrynosoma cornutum, in Texas

摘要

I studied 102 Texas horned lizards (Phrynosoma cornutum) encountered along roads or fortuitously at 50 sites in northern, southern, eastern, western, and central Texas from May through September 1999. Female-to-male and juvenile-to-adult ratios were 58:44 and 56:46, respectively. Distribution of horned lizards by sites were 60%, 50%, 50%, 30%, and 0% for the western, southern, northern, central, and eastern portions of the state, respectively. Average number of lizards captured was greater in the Southern region compared to the central and eastern regions. The Size of juvenile lizards was similar by region and sex; however, adult lizards were heavier and larger in the southern region compared to the western region.