Abstract
The purpose of this study was to determine how the gastrointestinal helminthofauna varies according to the age and sex of the lizard, Enyalius perditus, captured in Ibitipoca State Park in the state of Minas Gerais, Brazil, and to discuss the ecological and behavioral significance of these relationships. Fifty-five specimens of E. perditus were captured in drop traps, then killed, necropsied, and examined for the presence of helminths in the gastrointestinal tract. Nematodes, including Strongyluris oscari, Oswaldocruzia subauricularis, and Aplectana vellardi, were found. This was the first record of the last-named species in reptiles, and the first record of the first 2 species in E. perditus. The number of helminths increased with snout-vent length and, therefore, age of the lizards. Male E. perditus lizards were more heavily infected by nematodes than females; the largest numbers of nematodes occurred in the caecum and large intestine.
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