Da. Eifler, EXPERIMENTAL MANIPULATION OF SPACING PATTERNS IN THE WIDELY FORAGING LIZARD CNEMIDOPHORUS UNIPARENS, Herpetologica, 52(4), 1996, pp. 477-486
I examined the effect of experimentally increased-prey abundance on ho
me range and core area size, overlap, and location, and on levels of a
ggregation in the widely foraging, unisexual lizard Cnemidophorus unip
arens. Food supplementation had no effect on home range size but resul
ted in a significant decrease in core area size. Supplemental feeding
caused a repositioning of home ranges and core areas. Individuals visi
ting supplemental food sites (= fed) shifted both home range and core
areas toward regions with supplemental food. Lizards not observed visi
ting the feeding areas (= unfed) tended to move home range and core ar
ea locations away from those regions. Overlap of core areas and levels
of aggregation also increased for fed animals.