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28 October 2015 Decreased Flight Activity in Culex pipiens (Diptera: Culicidae) Naturally Infected With Culex flavivirus
Christina M. Newman, Tavis K. Anderson, Tony L. Goldberg
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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.

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Christina M. Newman, Tavis K. Anderson, and Tony L. Goldberg "Decreased Flight Activity in Culex pipiens (Diptera: Culicidae) Naturally Infected With Culex flavivirus," Journal of Medical Entomology 53(1), 233-236, (28 October 2015).
Received: 24 May 2015; Accepted: 25 September 2015; Published: 28 October 2015

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Culex flavivirus
Culex pipiens
flight activity
insect-specific flavivirus
mosquito behavior
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