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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-9870

Balenghien, T; Vazeille, M; Grandadam, M; Schaffner, F; Zeller, H; Reiter, P; Sabatier, P; Fouque, F; Bicout, D J (2008). Vector competence of some french Culex and Aedes mosquitoes for west nile virus. Vector Borne and Zoonotic Diseases, 8(5):589-595.

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To identify the mosquito species able to sustain the transmission of West Nile Virus (WNV) in the Camargue region (the main WNV focus of southern France), we assessed the vector competence of Culex modestus and Culex pipiens, the most abundant bird-feeders, and Aedes caspius, the most abundant mammophilic species occasionally found engorged with avian blood. Female mosquitoes were exposed to the infectious meal (10(10.3) plaque forming units (PFU)/mL) by membrane feeding, and hold at 26 degrees C. After the incubation period, disseminated infection was assessed by WNV detection using an indirect fluorescent antibody assay (IFA) on head squashes, and the transmission rate was assessed by the presence of WNV RNA in salivary secretions with a real-time reverse transcriptase-polymerase chain reaction (RT-PCR). After 14 incubation days, the disseminated infection and the transmission rates were 89.2% and 54.5% for Cx. modestus, 38.5% and 15.8% for Cx. pipiens, and 0.8% and 0 for Ae. caspius. Culex modestus was found to be an extremely efficient laboratory WNV vector and could thus be considered the main WNV vector in wetlands of the Camargue. Culex pipiens was a moderately efficient laboratory WNV vector, but in dry areas of the region it could play the main role in WNV transmission between birds and from birds to mammals. Aedes caspius was an inefficient vector of WNV in the laboratory, and despite its high densities, its role in WNV transmission may be minor in southern France


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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Institute of Parasitology
04 Faculty of Medicine > Institute of Parasitology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
600 Technology
Date:1 October 2008
Deposited On:14 Jan 2009 13:08
Last Modified:05 Apr 2016 12:48
Publisher:Mary Ann Liebert
Publisher DOI:10.1089/vbz.2007.0266
Official URL:http://www.liebertonline.com/doi/pdfplus/10.1089/vbz.2007.0266
PubMed ID:18447623

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