Parasitic Nematodes distribute globally and infect a variety of primate hosts. They have a strong host specificity because of the life histories and the routes of infection, especially in that live on the digestive organs of each host. It is also influenced in their habitat environments through their speciations. So it helps that we understand the interspecific or intraspecific involvements in primates to advance taxonomic analysis in each species.

　　　　There are some previous studies focused on whipworms (Trichuris sp.); however, other specific identification remains unclear.

　　　　In this study, we established a method that can extract DNA from each one parasitic egg in primate feces, and analyzed the fauna of parasitic nematodes and their phylogenetic tree in wild diurnal primates living sympatrically in Kalinzu Forest, Uganda.