Article (Scientific journals)
Seasonal Prevalence and Novel Multilocus Genotypes of Giardia duodenalis in Yaks (Bos grunniens) in Qinghai Province, Western China.
Song, Jun-Ke; Wang, Dan; Ren, Mei et al.
2021In Iranian Journal of Parasitology, 16 (4), p. 548 - 554
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Seasonal Prevalence and Novel Multilocus Genotypes of Giardia duodenalis in Yaks (Bos grunniens) in Qinghai Province, Western China.pdf
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Keywords :
Giardia duodenalis; Multilocus sequence typing (MLST); Prevalence; Yaks; Parasitology; Infectious Diseases
Abstract :
[en] [en] BACKGROUND: Giardia duodenalis is an important opportunistic zoonotic intestinal protozoon, which could parasitize yaks. However, a few studies have been conducted on the seasonal infection of G. duodenalis in yaks in China. METHODS: Overall, 1,027 fecal samples were collected from yaks of two age groups in seven cities of Qinghai Province, China at four seasons between May 2016 and Sep 2017. The prevalence and assemblages were analyzed by nested PCR and multilocus sequence typing (MLST). RESULTS: The overall prevalence of G. duodenalis was 2.04% (21/1027) based on triose phosphate isomease (tpi) locus. No significant differences in prevalence of the organism in yaks were found among different sampling areas. Additionally, same result was also presented in different seasons. However, there was statistically significant difference between young yaks within 6 months (8.33%, 4/48) and adult yaks over 6 months (1.73%, 17/979). The assemblage A recognized as a zoonotic assemblage (n=3) was found in yaks (>6 months) from Xining, while assemblage E (n=18) was detected from yaks in six cities. There were 5, 2 and 3 G. duodenalis subtypes detected positive at the tpi, the β-giardin (bg), and the glutamate dehydrogenase (gdh) loci, with 2, 2 and 3 novel subtypes, respectively. Three samples were successfully sequenced at all three loci, forming 1 assemblages A multilocus genotype (MLG) and 2 assemblages E MLGs, not reported. CONCLUSION: This study indicated a zoonotic potential of G. duodenalis in yaks from Qinghai Province and provides basic information about the epidemiology of G. duodenalis.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Song, Jun-Ke;  College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China ; State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai Province 810016, China
Wang, Dan;  College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China
Ren, Mei  ;  Université de Liège - ULiège > TERRA Research Centre ; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China
Yang, Fan;  College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China
Wang, Pin-Xue;  College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China
Zou, Min;  College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China
Zhao, Guang-Hui;  College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China
Lin, Qing;  College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, China ; State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai Province 810016, China
Language :
English
Title :
Seasonal Prevalence and Novel Multilocus Genotypes of Giardia duodenalis in Yaks (Bos grunniens) in Qinghai Province, Western China.
Publication date :
2021
Journal title :
Iranian Journal of Parasitology
ISSN :
1735-7020
eISSN :
2008-238X
Publisher :
Tehran University of Medical Sciences, Iran
Volume :
16
Issue :
4
Pages :
548 - 554
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This study was supported by the Project of Qinghai Science & Technology Department (2016-ZJ-754 and 2016-ZJ-Y01) and the Open Project of State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University (2017-ZZ-08). We thank the owners of the yaks for their collaboration.
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