title: Species abundance and insecticide resistance of Anopheles gambiae in selected areas of Ghana and Burkina Faso.
abstract: The Ghanaian National Malaria Control Programme has prioritized insecticide-treated materials as a key strategy for malaria control. We report on a survey of the distribution of the molecular forms of Anopheles gambiae Giles (Diptera: Culicidae) and insecticide resistance (the kdr mutation), carried out by sampling mosquitoes from 11 locations in Ghana and one additional site in Burkina Faso. The molecular M and S forms of An. gambiae were found to occur in sympatry in southern Ghana. The S form predominated throughout its distribution in the coastal savannah, except at one location in the strand and mangrove zone where rice was cultivated. The M form was the only form collected in northern Ghana and was the predominant form (97.5%) in Burkina Faso. No M/S hybrids were detected. The kdr mutation was observed at very high frequencies (98-100%) within the S form but reached a maximum of only 3.38% in the M form in one population at an irrigation scheme in the Ghanaian coastal savannah zone.
authors.affiliation: Vector Research Group, Liverpool School of Tropical Medicine, Liverpool, UK.
authors.forename: A E
authors.initials: AE
authors.lastname: Yawson
authors.forename: P J
authors.initials: PJ
authors.lastname: McCall
authors.forename: M D
authors.initials: MD
authors.lastname: Wilson
authors.forename: M J
authors.initials: MJ
authors.lastname: Donnelly
mesh_terms: D000818:Animals; D000852:Anopheles / Q000235:genetics*; D002050:Burkina Faso; D005260:Female; D014644:Genetic Variation; D005869:Ghana; D007305:Insecticide Resistance / Q000235:genetics*; D009154:Mutation; D011156:Population Density; D011722:Pyrethrins
chemical_list: D011722:Pyrethrins