Newman Christina M, Anderson Tavis K, Goldberg Tony L
Department Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Dr., Madison, WI 53706 (
Virus and Prion Research Unit, National Animal Disease Center, USDA-ARS, 1920 Dayton Ave., Ames, IA 50010 (
J Med Entomol. 2016 Jan;53(1):233-6. doi: 10.1093/jme/tjv161. Epub 2015 Oct 27.
Insect-specific flaviviruses (ISFVs) commonly infect vectors of mosquito-borne arboviruses. To investigate whether infection with an ISFV might affect mosquito flight behavior, we quantified flight behavior in Culex pipiens L. naturally infected with Culex flavivirus (CxFV). We observed a significant reduction in the scotophase (dark hours) flight activity of CxFV-positive mosquitoes relative to CxFV-negative mosquitoes, but only a marginal reduction in photophase (light hours) flight activity, and no change in the circadian pattern of flight activity. These results suggest that CxFV infection alters the flight activity of naturally infected Cx. pipiens most dramatically when these vectors are likely to be host seeking and may therefore affect the transmission of medically important arboviruses.
昆虫特异性黄病毒(ISFVs)通常感染蚊媒虫媒病毒的传播媒介。为了研究感染ISFV是否会影响蚊子的飞行行为,我们对自然感染库蚊黄病毒(CxFV)的致倦库蚊进行了飞行行为量化。我们观察到,相对于CxFV阴性蚊子,CxFV阳性蚊子在暗期(黑暗时段)的飞行活动显著减少,但在明期(光照时段)的飞行活动仅略有减少,且飞行活动的昼夜模式没有变化。这些结果表明,CxFV感染会在这些传播媒介可能寻找宿主时,最显著地改变自然感染的致倦库蚊的飞行活动,因此可能会影响重要医学虫媒病毒的传播。