Sceloporus undulatus has an average clutch size of 9 eggs (8.8) laid between April-May. However, this number varies greatly among geographic populations. Body size is also correlated with clutch size across geographic populations. Sexual maturity occurs most frequently between 9 and 10 months, but in a few populations, specifically in Ohio, maturity can take up to 3 growing seasons. These individuals are referred to as “delayed maturing.” Hatching occurs between mid-June and September, depending on geographic region. In one population, hatching may occur as late as the first week of October. Hatching time is based on the temperature of the region. In regions where the temperatures warm earlier in the year hatching also generally occurs earlier. Additionally, the length of the hatching season is regionally dependent based on the number of temperate months in the year of a region. (Tinkle and Ballinger, 1972)
Tinkle, D. W., and Ballinger, R. E. 1972. Sceloporus undulatus: A study of the intraspecific comparative demography of a lizard. Ecology 53: 570-584.
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