title: Intestinal Parasites in the Critically Endangered Przewalski's Gazelle ( Procapra przewalskii ) in China, with the Description of a New Species of Eimeria (Apicomplexa: Eimeriidae).
abstract: We used a flotation technique to survey fecal samples from 27 Przewalski's gazelles ( Procapra przewalskii Büchner, 1891) for intestinal parasites. Samples were collected from the Qinghai Lake region, Qinghai-Tibet plateau, China, in April 2015. We report parasites belonging to two nematode (Nematodirus, Marshallagia) genera and one apicomplexan (Eimeria) genus; one of the latter was a new species from the critically endangered Przewalski's gazelle. Sporulated oocysts of the new eimerian were spheroidal; they had a thick, outer wall without a micropyle, but with a distinct polar granule and an oocyst residuum. Oocysts measured a mean of 18.6(±0.8)×17.3(±0.9) μm in length and width, with a mean 1.1(±0.1) length/width ratio and a spheroidal oocyst residuum that had a mean width of 2.0(±0.7) μm. Sporocysts were ovoid, measuring a mean of 9.4(±0.6)×5.5(±0.5) μm in length and width, with a mean 1.7(±0.2) length/width ratio. A Stieda body and sporocyst residuum were present, but a substieda body was absent. Sporozoites each had a small anterior refractile body and a larger, posterior refractile body; a small nucleus was visible between them.
authors.affiliation: 1 Animal Disease Control and Prevention Center in Qinghai Province, 69 Shengli Rd., Xining 810001, People's Republic of China.
authors.forename: Yunping
authors.initials: Y
authors.lastname: Wang
authors.affiliation: 2 Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, 23 Xinning Rd., Xining 810001, People's Republic of China.|3 University of Chinese Academy of Sciences, 19 A Yuquan Rd., Shijingshan District, Beijing 100049, People's Republic of China.
authors.forename: Shouyang
authors.initials: S
authors.lastname: Du
authors.affiliation: 2 Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, 23 Xinning Rd., Xining 810001, People's Republic of China.|3 University of Chinese Academy of Sciences, 19 A Yuquan Rd., Shijingshan District, Beijing 100049, People's Republic of China.
authors.forename: Yanbin
authors.initials: Y
authors.lastname: Yang
authors.affiliation: 2 Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, 23 Xinning Rd., Xining 810001, People's Republic of China.|3 University of Chinese Academy of Sciences, 19 A Yuquan Rd., Shijingshan District, Beijing 100049, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: 4 Department of Biology, The University of New Mexico, Albuquerque, New Mexico 87131, USA.
authors.forename: Donald W
authors.initials: DW
authors.lastname: Duszynski
authors.affiliation: 2 Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, 23 Xinning Rd., Xining 810001, People's Republic of China.
authors.forename: Jianghui
authors.initials: J
authors.lastname: Bian
authors.affiliation: 2 Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, 23 Xinning Rd., Xining 810001, People's Republic of China.
authors.forename: Yifan
authors.initials: Y
authors.lastname: Cao
mesh_terms: D000818:Animals; D002681:China; D003048:Coccidiosis / Q000662:veterinary*; D004539:Eimeria / Q000472:pathogenicity*; D010271:Parasites; D012418:Ruminants / Q000382:microbiology*; D018609:Tibet
keywords: Coccidia; Eimeria; Marshallagia; Nematodirus; Procapra przewalskii; fecal samples; intestinal parasites; new species