ArticleActa parasitologica2021
The Common Occurrence of Theileria ovis in Tibetan Sheep and the First Report of Theileria sinensis in Yaks from Southern Qinghai, China.
Article in Acta parasitologica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Molecular Evidence of Ovine Theileriosis in Selected Areas of Qinghai Province.Veterinary sciences · 2026Article
- Investigation and Correlation Analysis of Pathogens Carried by Ticks and Cattle in Tumen River Basin, China.Veterinary sciences · 2026Article
- Development and application of a TaqMan probe-based pentaplex qPCR for the rapid detection and differential identification of five pathogens.Frontiers in microbiology · 2026Article
- Molecular evidence of fatal theileriosis in pastoralic Gaddi breed goats in Himachal Pradesh, North India: cladistics and population structure analysis.Tropical animal health and production · 2025Article
- Distribution ofParasite epidemiology and control · 2025Review
- Expanding the molecular understanding of Theileria infections in cattle and yaks from Gansu and Qinghai, China.Parasitology research · 2025Article
- An epidemiological survey of bovine piroplasmosis in Kashgar, Xinjiang, China.Parasitology research · 2024Article
- Molecular Characterization of Tick-borne Pathogens in Bactrian Camels and Ticks from Gansu Province, China.Acta parasitologica · 2024Article
- Molecular Identification ofAnimals : an open access journal from MDPI · 2024Article
- First Detection ofAnimals : an open access journal from MDPI · 2023Article
- Molecular detection of Anaplasma spp., Babesia spp. and Theileria spp. in yaks (Bos grunniens) and Tibetan sheep (Ovis aries) on the Qinghai-Tibetan Plateau, China.Parasites & vectors · 2021Article
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9 authors.
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Abstract
purposeThe tick-borne protozoa piroplasms, including Theileria and Babesia, are the cause of substantial economic losses to the livestock industry. However, in southern Qinghai province, China, there are limited information on the molecular characteristics of piroplasms. This study therefore aimed at determining the prevalence and genetic diversity of piroplasms.
methodsIn order to detect piroplasms, we examined 330 yaks and 236 Tibetan sheep blood samples by nested PCR. The differences in piroplasms prevalence in relation to different risk factors was analyzed using SPSS 26. Phylogenetic analysis based on 18S rRNA sequences was inferred using MEGA 7.
resultsDuring this study, Theileria spp. were detected in 33.6% (111/330) of yaks and 94.1% (222/236) of Tibetan sheep, but no Babesia was identified. Importantly, a comparison study revealed that T. ovis infection was highly prevalent in sheep (94.1%) but infrequent in yaks (6.1%), while T. sinensis was host-specific to yaks with an infection rate of 27.6%. In addition, male animals were more likely to be infected by T. sinensis and female animals were more likely to be infected by T. ovis. And animals below 4000 m areas reported a higher infection rate with T. sinensis (26.1% vs. 2.9%, p < 0.001). Alongside these differences in prevalence, we found a significantly higher T. sinensis infection rate in separated-grazing livestock (22.2% vs. 3.7%, p < 0.001), while mixed-grazing ruminants had a higher T. ovis infection rate (50.0% vs. 39.0%, p = 0.014). Furthermore, sequence analysis revealed that the 18S rRNA sequences obtained in this study shared 86.9-100.0% identities with each other and they were clustered into T. sinensis or T. ovis.
conclusionTo our knowledge, this is the first report of T. sinensis in Qinghai region. In addition, high prevalence of the generally sub-clinical T. ovis in sheep indicates extensive exposure to ticks and transmission of tick-borne pathogens with a significant economic impact. This study provides insights into the distribution and genetic diversity of Theileria in China.
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