Abstract
Enterocytozoon bieneusi is a zoonotic parasite which is considered to be an opportunistic pathogen of humans and animals. A number of studies have reported E. bieneusi infection in various animals. However, no information is available on the occurrence of E. bieneusi in Tan sheep, a unique indigenous sheep species in the Ningxia Hui Autonomous Region, China. The objectives of the present study were to examine the prevalence and identify the genotypes of E. bieneusi in Tan sheep in China. A total of 1014 fecal specimens of Tan sheep from six farms in the Ningxia Hui Autonomous Region were examined by nested PCR amplification of the internal transcribed spacer (ITS) of nuclear ribosomal DNA. The total prevalence of E. bieneusi was 12.2% (124/1014), ranging from 0.5 to 22.2% on six farms. Sequence analysis identified 10 genotypes of E. bieneusi, including three known genotypes, BEB6, COS-I, and CHG13, and seven novel genotypes designated as NX1 to NX7, which all belonged to group 2 by phylogenetic analysis. This is the first report describing the prevalence of E. bieneusi in Tan sheep, and the new genotypes identified in the current study expand the genotype distribution of E. bieneusi. These findings provide baseline data and have implications for the epidemiology and control of E. bieneusi infection in Tan sheep.
Data availability
The datasets supporting the conclusions in this article are included within the article. All the sequences of ITS genes obtained were deposited in GenBank with the following accession numbers: MK322754–MK322763.
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Funding
Project support was provided by the National Natural Science Foundation of China (Grant no. 31672549), the Open Fund of the Key Laboratory of Fujian Province Livestock Epidemic Prevention, Control and Biological Technology (2018KF02), the Agricultural Science and Technology Innovation Program (ASTIP) (Grant no. CAAS-ASTIP-2016-LVRI-03), and the Elite Program of the Chinese Academy of Agricultural Sciences.
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The present study was approved by the Animal Administration and Ethics Committee of Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences. All fecal samples were collected from the Chinese Tan sheep with the permission of farm owners or managers, and all procedures were performed strictly in accordance with the requirements of the Animal Ethics Procedures and Guidelines of the People’s Republic of China.
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Peng, JJ., Zou, Y., Li, ZX. et al. Occurrence of Enterocytozoon bieneusi in Chinese Tan sheep in the Ningxia Hui Autonomous Region, China. Parasitol Res 118, 2729–2734 (2019). https://doi.org/10.1007/s00436-019-06398-4
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DOI: https://doi.org/10.1007/s00436-019-06398-4