Yawson, A.E.McCall, P.J.Wilson, M.D.Donnelly, M.J.2019-03-182019-03-182004-12https://doi.org/10.1111/j.0269-283X.2004.00519.xVol. 18(4): pp 372-7http://ugspace.ug.edu.gh/handle/123456789/28654The 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.enAnopheles gambiaeGhanaIntrogressionkdr mutationMalariaPyrethroidsSelectionSympatryArticle