Abstract
We compared crevice fidelity among solitary and group-living individuals in a population of the group-living lizard Ouroborus cataphractus. We also compared the incidence of solitary individuals between the sexes and different seasons. We surveyed suitable rocky areas at two sites in the Graafwater district, South Africa, and all O. cataphractus individuals found, whether in groups or solitary, were marked and released back into their crevices. The areas were resurveyed after one month, three months and four months to compare crevice fidelity of solitary and group-living individuals. We found that solitary individuals were significantly less loyal to their rock shelters than individuals living in groups, and that solitary females appeared to be less loyal than solitary males. We found no significant difference in the frequency of solitary adult males in and outside of the mating season. Solitary adult males were significantly smaller in mean body size than group-living adult males, but did not have more s...
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