Notes on Natural History and Behavior of Sceloporus undulatus erythrocheilus in Colorado

Publisher Website
Google Scholar
Abstract
A population of the rock-inhabiting lizard S. undulatus erythrocheilus was studied from May 1969-March 1972 on a 3000 m2 study area in the Boulder Mountain Park near Boulder, Colorado [USA]. No predation was observed and the only ectoparasite found on the lizard was Geckobiella texana. The population decreased during the study, although the number of resident adults (10-15/acre) remained about the same. The annual turnover of the resident adult population was about 35% and the maximum age estimation for an individual was 48 mo. Lizards in the population were never active from mid-Nov.-early March. Reproductive activity began after emergence from brumation in late April and continued through mid-June. The testes reached maximum size during the breeding season and regressed to a low point in late July. Recrudescence began by Sept. Observed females laid 1 clutch of eggs/yr with deposition occurring in late June or early July. Most of the activity of the sedentary females was the result of courtship, feeding and thermoregulation. The males had a social hierarchy with 1 dominant, which was the most active individual in all types of social behavior. Social activity was greater during the breeding season. Enclosure studies indicate that residency is important in maintaining dominance.

This publication has 0 references indexed in Scilit: