title: Description of a new species, Trichuris ursinus n. sp. (Nematoda: Trichuridae) from Papio ursinus Keer, 1792 from South Africa.
abstract: In the present work, we carried out a morphological, biometrical and molecular study of whipworms Trichuris Roederer, 1761 (Nematoda: Trichuridae) parasitizing Papio ursinus Keer 1792 (Chacma baboon). Biometrical and molecular data suggest a new species of Trichuris parasitizing baboons. In addition of main morphological features (spicule, spicule sheath, spicule tube, proximal cloacal tube, distal cloacal tube, vulva, vagina), the mean values of individual variables between Trichuris colobae, Trichuris suis, Trichuris trichiura examined by Student's t tests suggest that T. ursinus n. sp. constitutes a new species. The combined analysis of three markers (cox1, cob and ITS2) revealed a sister relationships between T. colobae and T. ursinus n. sp. Mitochondrial sequences revealed a higher inter-specific similarity between T. ursinus n. sp., T. suis and T. colobae. Phylogenetic hypotheses for both mitochondrial genes strongly supported distinct genetic lineages corresponding to different species of the genus Trichuris associated with certain hosts. Thus, T. suis, T. colobae and T. ursinus n. sp. appeared as a sister group and separated from Trichuris spp. from humans and other species of primates.
authors.affiliation: Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Profesor García González 2, 41012 Seville, Spain.
authors.forename: Rocío
authors.initials: R
authors.lastname: Callejón
authors.affiliation: Department of Biodiversity (Zoology), University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa.
authors.forename: Ali
authors.initials: A
authors.lastname: Halajian
authors.affiliation: Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Profesor García González 2, 41012 Seville, Spain. Electronic address: cutillas@us.es.
authors.forename: Cristina
authors.initials: C
authors.lastname: Cutillas
mesh_terms: D000818:Animals; D045303:Cytochromes b / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D003576:Electron Transport Complex IV / Q000235:genetics; D005260:Female; D015801:Helminth Proteins / Q000235:genetics*; D006801:Humans; D008297:Male; D024101:Mitochondrial Proteins / Q000235:genetics; D048549:Papio ursinus / Q000469:parasitology*; D010802:Phylogeny; D018419:Primate Diseases / Q000453:epidemiology* / Q000469:parasitology; D013019:South Africa / Q000453:epidemiology; D014257:Trichuriasis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D014258:Trichuris / Q000033:anatomy & histology / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification
chemical_list: D021903:DNA, Ribosomal Spacer; D015801:Helminth Proteins; D024101:Mitochondrial Proteins; D045303:Cytochromes b; D003576:Electron Transport Complex IV
keywords: Chacma baboon; Mitochondrial DNA; Papio ursinus; Ribosomal DNA; Trichuris