Factors influencing the population structure of Aedes aegypti from the main cities in Cambodia

doi:doi:10.1038/sj.hdy.6800698

Heredity (2005) 95, 144–147. doi:10.1038/sj.hdy.6800698; published online 22 June 2005

Factors influencing the population structure of Aedes aegypti from the main cities in Cambodia

C Paupy¹, N Chantha², J-M Reynes³ and A-B Failloux^1,4

¹Insectes et Maladies Infectieuses (formerly, Ecologie des Systèmes Vectoriels), Paris, France
²National Malaria Center, 372 boulevard Monivong, Phnom Penh, Cambodia
³Unité de Virologie, Institut Pasteur du Cambodge, 5 boulevard Monivong, Phnom Penh, Cambodia

Correspondence: Dr A-B Failloux, Institut Pasteur, UP Génétique moléculaire des Bunyaviridés, 25-28 rue du Docteur Roux, 75 724 Paris Cedex 15, France. E-mail: afaillou@pasteur.fr

⁴Current address: Génétique moléculaire des Bunyaviridés, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris Cedex 15, France.

Received 15 March 2005; Accepted 21 March 2005; Published online 22 June 2005.

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Abstract

A population genetic analysis was conducted on 47 Aedes aegypti collections from Cambodia. Genetic differentiation at seven polymorphic isoenzyme loci was analysed by starch gel electrophoresis. Low (F_ST=0.024) but significant (P<10^-6) differentiation was found when all samples were considered. Whatever the grouping of samples tested, differentiation remained significant but low. The role of human activities (ie insecticide treatments or water storage practices) and environmental factors (ie rainfall) in shaping mosquito differentiation are discussed.