Spacing in Juvenile Lizards (Sceloporus jarrovi)

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Abstract
Previous studies of spatial relationships in lizards have neglected spacing patterns by juvenile lizards. The establishment of juvenile home ranges for 56 resident and 10 introduced S. jarrovi was observed during the summers of 1974 and 1975. Home ranges, and smaller defended territories within them, were established close to birth locations or release points and did not shift significantly by the 2nd summer. Territorial behavior began at an early age; head bobbing, pushups and chasing were first observed at 13 days. Lizards less than 1 mo. old, and all adults, exhibited this behavior an average of only 1-2 s/h. Juveniles approaching maturity also did an average of 6-13 s/h. S. jarrovi also may use nonvisual cues for territory maintenance.

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