Nematofauna gastrointestinal de Cacajao calvus ucayalii THOMAS, 1928 (primates: Phiteciidae), na bacia do rio Javari-Mirim, Amazônia peruana.

Abstract

Research involving helminth parasites of wild primates are very important, to intimate phylogenetic relationship of humans with apes , maintaining relationship with and impact on ecosystem health in addition to their own biological dynamics with them . The purpose of this study the species of gastrointestinal nematodes of uakari (Cacajao calvus ucayalii), a subspecies of the primate platyrhine Pitheciidae family was identified (Vulnerable standing under IUCN and CITES Appendix I). Adult parasites were recovered directly from the contents of the stomach, small intestine, and large intestine and fecal stool from the rectum of five individual of red uakari, hunted by the people of the Javari River Mirim basin for human consumption as a source of protein. Also, were collected 36 stool samples in field of wild primates in the same host species in the same geographic arca for comparison purposes. The samples were analyzed at the Laboratório de Biologia Celular e Helmintologia/ICB/UFPABelém, Pará. To coprológic analysis techniques concentration Ritchie and spontaneous sedimentation were used. To the Identification of adult specimens were used light microscopy and scanning electron microscopy with the assistance of taxonomic keys. Nematodes of the genus Physaloptera sp. were found (60 % ) parasitizing the stomach, genus Strongyloides sp. (100 %), parasitizing the small intestine and genus Trypanoxyuris (Trypanoxyuris) sp. (100 %) parasitizing the large intestine, likewise eggs of taxonomic groups described in stool samples in the field was observed, which resulted in the publication of an article . The result on the nematofauna Uacari in free living conditions contributes with important data on the biodiversity of helminth parasites in the western Amazon region.