title: Ostertagia nianqingtanggulaensis Kúng & Li, 1965 (Nematoda: Trichostrongyloidea) from sheep and goats at high altitudes in Nepal.
abstract: The trichostrongyloid nematode Ostertagia nianqingtanggulaensis Kúng & Li, 1965, previously recorded only from sheep in Tibet, is redescribed and is shown to be a common parasite of both sheep and goats at higher altitudes in the Himalayan foothills of western Nepal. Herbage examination indicated that infective larvae can overwinter on snow covered slopes. Use of tracer animals confirmed that migratory flocks are exposed to infection when grazing on alpine pastures during the summer months. In contrast, nearby non-migratory flocks kept at lower altitudes did not harbour O. nianqingtanggulaensis and tracer animals grazed with these flocks did not become infected with this species.
authors.affiliation: Lumle Agricultural Research Centre, PO Box no. 1, Pokhara, Nepal.
authors.forename: B R
authors.initials: BR
authors.lastname: Joshi
authors.forename: L M
authors.initials: LM
authors.lastname: Gibbons
authors.forename: D E
authors.initials: DE
authors.lastname: Jacobs
mesh_terms: D000531:Altitude; D000818:Animals; D005260:Female; D015511:Goat Diseases / Q000469:parasitology; D006041:Goats / Q000469:parasitology*; D008297:Male; D008855:Microscopy, Electron, Scanning; D009390:Nepal; D010028:Ostertagia / Q000033:anatomy & histology / Q000145:classification* / Q000302:isolation & purification; D012756:Sheep / Q000469:parasitology*; D012757:Sheep Diseases / Q000469:parasitology