Vector competence of Peruvian mosquitoes (Diptera: Culicidae) for a subtype IIIC virus in the Venezuelan equine encephalomyelitis complex isolated from mosquitoes captured in Peru

Journal of the American Mosquito Control Association
M J TurellM L O'Guinn

Abstract

We evaluated mosquitoes collected in the Amazon Basin, near Iquitos, Peru, for their susceptibility to a subtype IIIC strain of the Venezuelan equine encephalomyelitis complex. This virus had been previously isolated from a pool of mixed Culex vomerifer and Cx. gnomatos captured near Iquitos, Peru, in 1997. After feeding on hamsters with viremias of about 10(8) plaque-forming units of virus per ml, Cx. gnomatos was the most efficient vector. Other species, such as Ochlerotatus fulvus and Psorophora cingulata, although highly susceptible to infection, were not efficient laboratory vectors of this virus due to a significant salivary gland barrier. The Cx. (Culex) species, consisting mostly of Cx. (Cux.) coronator, were nearly refractory to subtype IIIC virus and exhibited both midgut infection as well as salivary gland barriers. Additional studies on biting behavior, mosquito population densities, and vertebrate reservoir hosts of subtype IIIC virus are needed to determine the role that these species play in the maintenance and spread of this virus in the Amazon Basin region.

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Citations

Dec 18, 2013·BMC Genomics·Andrezza C ChagasJosé M C Ribeiro
Aug 3, 2016·Journal of Medical Entomology·R S G HutchingsM A M Sallum
Oct 30, 2016·Acta Tropica·Carolina Torres-GutierrezMaria Anice Mureb Sallum
Feb 9, 2012·Journal of Medical Entomology·Alexander T CiotaLaura D Kramer
Oct 21, 2010·Virologica Sinica·Ze LiuChang-gui Li
Jun 13, 2018·Royal Society Open Science·Carolina Torres-GutierrezMaria Anice Mureb Sallum
Jul 1, 2020·Journal of Medical Entomology·Rosa Sá Gomes HutchingsMaria Anice Mureb Sallum
May 29, 2020·Parasites & Vectors·Ivy Luizi Rodrigues de SáMaria Anice Mureb Sallum
May 17, 2018·Journal of Medical Entomology·Rosa Sá Gomes HutchingsMaria Anice Mureb Sallum
May 11, 2017·EFSA Journal·UNKNOWN EFSA Panel on Animal Health and WelfareJan Arend Stegeman

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