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首页> 外文期刊>Journal of Medical Entomology >Container Type Influences the Relative Abundance, Body Size, and Susceptibility of Ochlerotatus triseriatus (Diptera: Culicidae) to La Crosse Virus
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Container Type Influences the Relative Abundance, Body Size, and Susceptibility of Ochlerotatus triseriatus (Diptera: Culicidae) to La Crosse Virus

机译：容器类型会影响Triseriatus tricheriatus（Diptera：Culicidae）对La Crosse病毒的相对丰度，体型和易感性

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摘要

Ochlerotatus triseriatus (Say), the primary vector of La Crosse virus (LAC), develops in a variety of natural and artificial aquatic containers where it often co-occurs with larvae of other mosquito species. We conducted a field study at two woodlots (South Farms and Trelease Woods) in Urbana, IL, to examine how container type influences vector abundance, body size, and susceptibility to LAC. Mosquito pupae were collected from tree holes, plastic bins, and waste tires, and eclosing adults were identified to species morphologically. Oc. triseriatus and Ochlerotatus japonicus (Theobald) females were orally challenged with LAC and midgut infection rate, disseminated infection rate, and body titer were determined by reverse-transcriptase real-time PCR. Oc. triseriatus was the dominant species collected in tree holes while Oc. japonicus and Culex restuans (Theobald) were mostly dominant in artificial containers. Female Oc. triseriatus and Oc. japonicus collected from plastic bins were significantly larger than those collected from tree holes or waste tires. Oc. japonicus females from South Farms were also significantly larger than those from Trelease Woods. Oc. triseriatus females collected from plastic bins and waste tires were significantly more susceptible to LAC infection relative to females collected from tree holes. In addition, Oc. triseriatus females from waste tires had significantly higher LAC titer relative to Oc. triseriatus from tree holes. For each container type and study site, wing length was not correlated to infection or dissemination rates. These findings suggest that the container type in which Oc. triseriatus develop may contribute to the spatial and temporal dynamics of LAC transmission.
机译：拉克罗斯病毒（LAC）的主要载体Oslerotatus triseriatus（Say）在各种天然和人工水生容器中发育，通常与其他蚊子的幼虫共存。我们在伊利诺伊州厄巴纳的两个林区（South Farms和Trelease Woods）进行了实地研究，以研究容器类型如何影响媒介物的丰度，体型和对LAC的敏感性。从树洞，塑料垃圾桶和废轮胎中收集蚊虫up，并从形态上鉴定成虫的成虫。 c口服雌性三头肌和日本短尾蛇（Theobald）雌性，通过逆转录酶实时定量PCR测定中肠感染率，弥散性感染率和滴度。 c Triseriatus是Oc时收集在树洞中的优势种。人工容器中，japonicus和Culex restuans（Theobald）占主导地位。女超人triseriatus和Oc。从塑料垃圾箱收集的刺参明显大于从树洞或废轮胎收集的刺参。 c来自South Farms的日本粳稻雌性也明显大于来自Trelease Woods的那些。 c与从树洞中收集的雌性相比，从塑料垃圾箱和废轮胎中收集的Triseriatus雌性对LAC感染的敏感度更高。另外，Oc。相对于Oc，废轮胎中的Triseriatus雌性的LAC滴度明显更高。从树洞里的triseriatus。对于每种容器类型和研究地点，机翼长度与感染或传播速度均不相关。这些发现表明，容器的类型为Oc。 Triseriatus的发育可能有助于LAC传播的时空动态。

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