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A broad-range survey of ticks from livestock in Northern Xinjiang: changes in tick distribution and the isolation of Borrelia burgdorferi sensu stricto

Overview of attention for article published in Parasites & Vectors, September 2015
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Title
A broad-range survey of ticks from livestock in Northern Xinjiang: changes in tick distribution and the isolation of Borrelia burgdorferi sensu stricto
Published in
Parasites & Vectors, September 2015
DOI 10.1186/s13071-015-1021-0
Pubmed ID
Authors

Yuan-Zhi Wang, Lu-Meng Mu, Ke Zhang, Mei-Hua Yang, Lin Zhang, Jing-Yun Du, Zhi-Qiang Liu, Yong-Xiang Li, Wei-Hua Lu, Chuang-Fu Chen, Yan Wang, Rong-Gui Chen, Jun Xu, Li Yuan, Wan-Jiang Zhang, Wei-Ze Zuo, Ren-Fu Shao

Abstract

Borreliosis is highly prevalent in Xinjiang Uygur Autonomous Region, China. However, little is known about the presence of Borrelia pathogens in tick species in this region, in addition Borrelia pathogens have not been isolated from domestic animals. We collected adult ticks from domestic animals at 19 sampling sites in 14 counties in northern Xinjiang from 2012 to 2014. Ticks were identified to species by morphology and were molecularly analysed by sequences of mitochondrial 16S rDNA gene; 4-8 ticks of each species at every sampling site were sequenced. 112 live adult ticks were selected for each species in every county, and were used to culture Borrelia pathogens; the genotypes were then determined by sequences of the 5S-23S rRNA intergenic spacer and the outer surface protein A (ospA) gene. A total of 5257 adult ticks, belonging to four genera and seven species, were collected. Compared with three decades ago, the abundance of the five common tick species during the peak ixodid tick season has changed. Certain tick species, such as Rhipicephalus turanicus (Rh. turanicus), was found at Jimusaer, Yining, Fukang, and Chabuchaer Counties for the first time. Additionally, the sequence analyses showed that the Hyalomma asiaticum (Hy. asiaticum), Haemaphysalis punctata (Ha. punctata), and Dermacentor marginatus (D. marginatus) that were collected from different sampling sites (≥3 sites) shared identical 16S rDNA sequences respectively. For the tick species that were collected from the same county, such as Hy. asiaticum from Shihezi County and Rh. turanicus from Yining County, their 16S rDNA sequences showed genetic diversity. In addition, sixteen Borrelia isolates were found in Hy. asiaticum, Ha. punctata, D. marginatus and Rh. turanicus, which infested cattle, sheep, horse and camel in Yining, Chabuchaer, Shihezi and Shawan Counties. All of the isolates were genetically identified as B. Burgdorferi sensu stricto. Warmer and wetter climate may have contributed to the altered distribution and abundance of the five most common ticks in northern Xinjiang. The genetic analyses showed that certain tick species, such as Hy. asiaticum or Rh. turanicus, exhibit genetic commonness or diversity. Additionally, this study is the first to isolate B. burgdorferi sensu stricto in Hy. asiaticum asiaticum, H. punctata, D. nuttalli and D. marginatus ticks from domestic animals. These ticks may transmit borreliosis among livestock.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 31 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Colombia 1 3%
Unknown 30 97%

Demographic breakdown

Readers by professional status Count As %
Researcher 9 29%
Professor 3 10%
Lecturer > Senior Lecturer 2 6%
Student > Master 2 6%
Student > Ph. D. Student 2 6%
Other 3 10%
Unknown 10 32%
Readers by discipline Count As %
Agricultural and Biological Sciences 5 16%
Veterinary Science and Veterinary Medicine 4 13%
Environmental Science 2 6%
Biochemistry, Genetics and Molecular Biology 2 6%
Nursing and Health Professions 2 6%
Other 5 16%
Unknown 11 35%