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首页> 外文期刊>Journal of Medical Entomology >Grasshoppers (Orthoptera : Acrididae) could serve as reservoirs and vectors of vesicular stomatitis virus
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Grasshoppers (Orthoptera : Acrididae) could serve as reservoirs and vectors of vesicular stomatitis virus

机译：蚱（（直翅目：Ac科）可以作为水疱性口炎病毒的贮藏和载体

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摘要

Vesicular stomatitis (VS) is an economically devastating disease of livestock in the Americas. Despite strong circumstantial evidence for the role of arthropods in epizootics, no hematophagous vector explains the field evidence. Based on the spatiotemporal association of grasshopper outbreaks and VS epizootics, we investigated the potential role of these insects as vectors and reservoirs of the disease. The critical steps in the grasshopper-bovine transmission cycle were demonstrated, including 1) 62% of grasshoppers [Melanoplus sanguinipes (F.)] fed vesicular stomatitis virus (VSV) from cell culture became infected, with titers reaching 40,000 times the inoculative dose; 2) 40% of grasshoppers that cannibalized VSV-infected grasshopper cadavers became infected, amplifying virus up to 1,000-fold; 3) one of three cattle consuming VSV-infected grasshopper cadavers contracted typical VS and shed virus in saliva; and 4) 15% of grasshoppers became infected when fed saliva from this infected cow. The ecological conditions and biological processes necessary for these transmissions to occur are present throughout much of the Americas. Field studies will be required to show these findings are relevant to the natural epidemiology of VSV.
机译：在美洲，水泡性口腔炎（VS）是一种经济上具有破坏性的牲畜疾病。尽管有很强的间接证据证明节肢动物在动物流行病中的作用，但尚无食血性媒介解释现场证据。基于蚱hopper暴发和VS流行病的时空关联，我们调查了这些昆虫作为该病的媒介和储库的潜在作用。蚱hopper-牛传播周期的关键步骤得到了证实，包括：1）62％的蚱cell [Melanoplus sanguinipes（F.）]从细胞培养中摄取了水泡性口炎病毒（VSV），被感染，滴度达到接种量的40,000倍; 2）蚕食了被VSV感染的蚱尸体的蚱hopper有40％被感染，将病毒放大了1000倍; 3）三只食用VSV感染的牛cattle尸体之一感染了典型的VS，并在唾液中散发了病毒; 4）15％的蚱when在喂食这种被感染的牛的唾液后被感染。这些传播发生所必需的生态条件和生物过程在整个美洲大部分地区都存在。将需要进行现场研究以表明这些发现与VSV的自然流行病学有关。

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