Anopheles pharoensis and transmission of Plasmodium falciparum in the Senegal River delta, West Africa

Abstract
1.Anopheles pharoensisTheobald was found to be the prevalent man‐biting anopheline mosquito in the central area of the Senegal River delta.2. Blood‐fed females ofAn.pharoensiswere obtained during September‐December 1987 from mosquito bednets in the village of Souhlloul, near the Boundoum dam, 70 km NE of St Louis.3. Dried mosquito specimens were identified morphologically and each thorax processed using monoclonal antibody against the circum‐sporozoite protein ofPlasmodium falciparum.4. FiveAn.pharoensisout of 912 examined were sporozoite positive, while ninety‐eightAn.gambiaeGilessensu latowere all negative. This finding strongly supports the local importance ofAn.pharoensisas a malaria vector.5. Successful use of pyrethroid‐impregnated bednets against malaria transmission in this situation has helped to achieve more than 90% reduction of malaria prevalence.

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