Anaplasma infection of Bactrian camels (Camelus bactrianus) and ticks in Xinjiang, China

Particle and Fibre Toxicology

Lin Zhang²  Jianxun Luo²  Hong Yin¹  Guiquan Guan²  Zhijie Liu²  Junlong Liu²  Qian Li²  Yaqiong Li²  Gege Qin²  Ze Chen²  Jifei Yang²  Youquan Li² 

[1] Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, P. R. China;State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, P. R. China

关键词: China;    Xinjiang;    PCR;    Bactrian camel;    Detection;    Anaplasma platys;   

Others  :  1224208
DOI  :  10.1186/s13071-015-0931-1

 received in 2015-03-31, accepted in 2015-06-02,  发布年份 2015

【 摘 要 】

Background

To date, anaplasmosis has been reported to be a subclinical disease in Indian and Arabian one-humped camels (Camelus dromedarius) and llamas (Lama glama). However, no information on Anaplasma infection in two-humped Bactrian camels (Camelus bactrianus) in China has been published to date. The aim of this study was to investigate the prevalence of Anaplasma spp. in domestic Bactrian camels and ticks in Xinjiang, China.

Findings

A total of 382 ticks were collected from the Bactrian camels and from environmental sources. Of these, 84 were morphologically identified as belonging to the Rhipicephalus sanguineus group and genetically identified (12S rDNA, 16S rDNA and the cytochrome c oxidase 1 genes) as R. sanguineus group ticks (temporally designated as Rhipicephalus sp. Xinjiang). PCR testing showed that 7.2 % (20/279) of the camels harbored Anaplasma platys DNA. However, microscopic examination revealed no A. platys inclusions in blood smears from the camels. The PCR prevalence of A. platys DNA was 9.5 % (6/63) in Rhipicephalus sp. Xinjiang from the Bactrian camels and 14.3 % (3/21) in Rhipicephalus sp. Xinjiang from the vegetation. A. platys DNA was not detected by PCR in other tick species (Hyalomma asiaticum, Dermacentor niveus and Hyalomma dromedarii), and no other Anaplasma species were detected in these samples.

Conclusions

This is the first report of A. platys in Bactrian camels in Xinjiang, China. The moderate positivity observed indicates that these animals might be a natural host for this pathogen in China.

【 授权许可】

   
2015 Li et al.

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