Comparative Susceptibility of Ochlerotatus japonicus, Ochlerotatus triseriatus, Aedes albopictus, and Aedes aegypti (Diptera: Culicidae) to La Crosse Virus
Comparative Susceptibility of Ochlerotatus japonicus, Ochlerotatus triseriatus, Aedes albopictus, and Aedes aegypti (Diptera: Culicidae) to La Crosse Virus
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DOI：
10.1093/jme/tjw097
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发表时间：
2016-11-01
影响因子：
2.1
通讯作者：
Muturi, Ephantus J.
中科院分区：
文献类型：
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作者：
Bara, Jeffrey J.;Parker, Allison T.;Muturi, Ephantus J.
入侵性蚊子物种作为新的媒介，可增加本地蚊媒疾病的传播风险。在这项研究中，我们研究了三种外来入侵蚊子埃及伊蚊（L.），AE. albopictus（Skuse）和Ochlerotatus triperiatus（Theobald）对拉克罗斯病毒（LACV）的抗性。用LACV对4种蚊种的雌蚊进行口服攻击，孵育3、5、7、9或11 d，测定其中肠感染率、传播率和有效媒介能力。总的来说，C。有效载体感受力值最高的是白纹伊蚊（2.92），其次是白纹伊蚊（Ae. albopictus（1.55），Ae. aegypti（0.88）和Oc. triseriatus（0.64）。此外，我们评估了蚊子大小和LACV易感性之间的关系，现场收集的Oc。triseriatus和Oc. - 是的我们假设较小的成年人更容易受到LACV的影响;然而，我们的结果并不支持这一假设。感染的OC。tristeriatus往往比暴露但未感染的女性，而感染和未感染的Oc。它们的大小相似。这些结果表明，OC。Ae. albopictus和Ae.埃及人具有传播LACV的巨大潜力，需要更多的研究来揭示他们在LACV流行病学中的潜在作用。
Invasive mosquito species can increase the transmission risk of native mosquito-borne diseases by acting as novel vectors. In this study, we examined the susceptibility of three exotic invasive mosquito species Aedes aegypti (L.), Ae. albopictus (Skuse), and Ochlerotatus japonicus (Theobald) to La Crosse virus (LACV) relative to the native primary vector Ochlerotatus triseriatus (Say). Adult females of the four mosquito species were orally challenged with LACV; incubated for 3, 5, 7, 9, or 11 d; and their midgut infection rates, dissemination rates, and effective vector competence were determined. Overall, Oc. japonicus (2.92) had the highest effective vector competence values, followed by Ae. albopictus (1.55), Ae. aegypti (0.88), and Oc. triseriatus (0.64). In addition, we assessed the relationship between mosquito size and LACV susceptibility for field-collected Oc. triseriatus and Oc. japonicus. We hypothesized that smaller adults would be more susceptible to LACV; however, our results did not support this hypothesis. Infected Oc. triseriatus tended to be larger than exposed but uninfected females, while infected and uninfected Oc. japonicus were similarly sized. These findings suggest that Oc. japonicus, Ae. albopictus, and Ae. aegypti have significant potential to transmit LACV and more research is needed to uncover their potential role in LACV epidemiology.