文献类型: 外文期刊
作者: Zhi Li;Yuan Han;Jun long Liu;Xue yong Zhang;Xiuying Shen;Zhi hong Guo;Hong Yin;Hong Duo;Yong Fu
作者机构:
关键词: Diversity;Phylogenetic analysis;Qinghai;Ticks;Zoonotic piroplasm
期刊名称: Acta Tropica
ISSN: 0001-706X
年卷期: 2025 年 272 卷
页码:
收录情况: SCIE(2025版)
摘要: Ticks are the most versatile vectors, capable of harboring the broadest spectrum of pathogens, including Theileria and Babesia parasites, which pose a substantial threat to public health. Although the piroplasm infection in ticks and hosts are prevalent in China, the information for the genetic diversity of the pathogens transmitted by ticks is limited in Qinghai Province. We investigated piroplasm diversity in 445 ticks from four counties using nested PCR and phylogenetic analysis. The findings of identification for tick species showed the collected ticks belonged to two genera (Haemaphysalis and Dermacentor) and five species (Haemaphysalis qinghaiensis, Hae. danieli, Dermacentor everestianus, D. nuttalli and D. silvarum); and total infection rate of piroplasm was 33.71 %, and the most prevalent species were Theileria equi (15.28 %), T. luwenshuni (7.87 %) and Babesia caballi (4.49 %). The results of polymorphism for the piroplasm carried by ticks indicated that T. equi exhibited lower haplotype diversity and nucleotide diversity than B. caballi, T. uilenbergi, T. ovis and T. luwenshuni. The phylogenetic analysis showed T. uilenbergi, T. ovis, T. luwenshuni, Theileria sp. and Theileria sp. OT3 identified from different ticks were each clustered with the corresponding pathogens carried by various ticks and hosts from different regions. This study reveals high diversity of piroplasm identified in ticks from Qinghai, with several parasites firstly detected in some tick species, highlighting the expanding spectrum of tick-borne pathogens in this region.
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