Summer activity cycles of <i>Urosaurus ornatus</i> in field and laboratory

TitleSummer activity cycles of Urosaurus ornatus in field and laboratory
Publication TypeThesis
Year of Publication1976
AuthorsDelahunt RAnne
Number of Pages30
Date Published1976
UniversityNew Mexico State University
CityLas Cruces, New Mexico
Thesis TypeM.S. Thesispp
Call Number00600
Keywordsbehavior, Urosaurus, dissertation, dissertations, lizard, Urosaurus, lizard,behavior, lizard,tree lizard, Urosaurus, reptile, also SEE <LIZARD>, theses, thesis, Urosaurus,behavior
AbstractThe behavioral activity of Urosaurus orantus was studied in the field and laboratory. An ethogram was made from field observations. The percent of time in which the major behavioral patterns were performed during each hour of the day was also recorded. Daily cycles in the time at which these behaviors occurred in the field were found. Territorial encounters only occurred before 1230 hr. At 1230 hr simultaneous peaks in spontaneous pushups and courtship activity occurred. The cyclic occurrence of these behaviors can be related to both environmental factors and laboratory activity cycles. In the laboratory, a 12 hr LD cycle was imposed upon different groups of male and female U. orantus at constant temperatures of 23 degrees Celsius or 34 degrees Celsius, most locomotory activity occurred during the midday hours. At 34 degrees Celsius, activity was shifted towards early morning. Males and females exhibited equal levels of activity at 23 degrees Celsius, while at 34 degrees Celsius males were twice as active as females.