The Amazon region is an important region for biodiversity, and many new species are described for this region each year. However, the diversity of parasites infecting Amazonian reptiles is still poorly known, and there are few studies about how parasite communities of these hosts are structured. Our study was designed to elucidate the parasite community structure of Thecadactylus rapicauda, one of the largest species of gekkonid lizards in the world, and to discover the relative utility of size, sex, and body mass of Thecadactylus rapicauda as predictive factors of the abundance of helminth parasites. We analyzed 40 individuals of T. rapicauda, of which 34 had parasites (85% of prevalence), with 269 specimens allocated to 10 species. Body size of the host showed a positive influence on the abundance of helminths. Host sex is another important factor related to the abundance of nematodes: females were usually heavily infected. We conclude that T. rapicauda has a high richness of the helminth species and that most of the species found infecting this host were nematodes with a direct life cycle. Additionally, we found new helminth species, which should be described formally in the future.

亚马逊地区是生物多样性的重要地区，每年都会为该地区描述许多新物种。然而，感染亚马逊爬行动物的寄生虫的多样性仍然知之甚少，关于这些宿主的寄生虫群落结构的研究很少。我们的研究旨在阐明Thecadactylus rapicauda的寄生虫群落结构，这是世界上最大的壁虎蜥蜴物种之一，并发现Thecadactylus rapicauda的大小、性别和体重的相对效用作为预测因素蠕虫寄生虫。我们分析了 40 只T. rapicauda个体，其中 34 个有寄生虫（占患病率的 85%），269 个标本分配给 10 个物种。宿主的体型对蠕虫的数量有积极的影响。宿主性别是与大量线虫相关的另一个重要因素：雌性通常被严重感染。我们得出结论，T. rapicauda具有高度丰富的蠕虫物种，并且发现感染该宿主的大多数物种是具有直接生命周期的线虫。此外，我们还发现了新的蠕虫物种，未来应该对其进行正式描述。