DNA segments of African Swine Fever Virus detected for the first time in hard ticks from sheep and bovines
文献类型： 外文期刊
作者： Chen, Ze 1 ; Xu, Xiaofeng 1 ; Wang, Yufeng 2 ; Bei, Jinlong 3 ; Jin, Xiufeng 1 ; Dou, Weihao 1 ; Ji, Haishuo 1 ; Duan, Yu 1 ;
作者机构： 1.Nankai Univ, Coll Life Sci, Tianjin 300071, Peoples R China
2.Southwest Forestry Univ, Kunming 650224, Yunnan, Peoples R China
3.Guangdong Acad Agr Sci, AGRObiol Gene Res Ctr, Guangzhou 510640, Guangdong, Peoples R China
关键词： ASFV; hard tick; virus detection; transmission; transovarian
期刊名称：SYSTEMATIC AND APPLIED ACAROLOGY （ 影响因子：1.421； 五年影响因子：1.254 ）
ISSN： 1362-1971
年卷期： 2019 年 24 卷 1 期
页码：
收录情况： SCI
摘要： In this study, we detected African Swine Fever Virus (ASFV) in Dermacentor (Ixodidae) from sheep and bovines using small RNA sequencing. To validate this result, a 235-bp DNA segment was detected in a number of DNA samples from D. silvarum and sheep blood. This 235-bp segment had an identity of 99% to a 235-bp DNA segment of ASFV and contained three single nucleotide mutations (C38T, C76T and A108C). C38T, resulting in a single amino acid mutation G66D, suggests the existence of a new ASFV strain, which is different from all reported ASFV strains in the NCBI GenBank database and the ASFV strain (GenBank: MH713612.1) reported in China in 2018. To further confirm the existence of ASFV in Dermacentor ticks, three DNA segments of ASFV were detected in D. niveus females from bovines and their first generation ticks reared in our lab. These results also proved that transovarian transmission of ASFV occurs in hard ticks. This study revealed for the first time that ASFV has a wider range of hosts (e.g. sheep and bovines) and vectors (e.g. hard ticks), beyond the well-known Suidae family and Argasidae (soft ticks). Our findings pave the way toward further studies on ASFV transmission and the development of prevention and control measures.
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