Is Culex modestus (Diptera: Culicidae), vector of West Nile virus, spreading in the Dombes area, France?
J Med Entomol
; 46(6): 1269-81, 2009 Nov.
Article
de En
| MEDLINE
| ID: mdl-19960670
ABSTRACT
As a main vector of West Nile (WN) virus (family Flaviviridae, genus Flavivirus) in Europe, Culex modestus Ficalbi (Diptera Culicidae) is commonly found in delta regions, lakes, and ponds. The Dombes area is located along one of the main corridors of bird migrations in France and lies 300 km north of the Camargue region, a frequent focus of WN virus circulation. It is an important breeding, wintering, and stopover site for many bird species that are putative carriers of viruses of different kinds. It is also a continental wetland with approximately =1200 fish farming ponds, scattered over the area, that provide suitable breeding sites for Cx. modestus. This article reports an entomological study based on larval surveys conducted in ponds in 2007 to assess the prevalence and abundance of Cx. modestus in the Dombes. Using the larval survey as an ecological screening test, we investigated the proportion of ponds found positive for Cx. modestus, and the relative abundance of this species was estimated in larval samples. We found that its pond distribution was more extensive in the 2007 survey than in that conducted in the 1970s. Survey methods and meteorological and anthropological factors that could account for the differences or variations between the findings of the two investigations are discussed.
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Virus du Nil occidental
/
Culex
/
Vecteurs insectes
Type d'étude:
Prevalence_studies
/
Risk_factors_studies
Limites:
Animals
Pays/Région comme sujet:
Europa
Langue:
En
Journal:
J Med Entomol
Année:
2009
Type de document:
Article
Pays d'affiliation:
France