Mosquito fauna and perspectives for integrated control of urban vector-mosquito populations in Southern Benin (West Africa).
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German Mosquito Control Association (KABS), Waldsee, Germany
Institute of Genetics and Microbiology, Department of Microbial Ecology and Environmental Protection, University of Wroclaw, Poland
University of Heidelberg, Heidelberg, Germany
Corresponding author
Norbert Becker   

German Mosquito Control Association (KABS), Ludwigstr. 99, 67165 Waldsee, Germany
Ann Agric Environ Med. 2010;17(1):49-57
This study aims at an integrated vector management (IVM) concept of implementing biological control agents against vector mosquito larvae as a cost-effective and scalable control strategy. In the first step, the mosquito species composition fauna of southern Benin was studied using standard entomological procedures in natural and man-made habitats. Altogether, 24 species belonging to 6 genera of mosquitoes Aedes, Anopheles, Culex, Mansonia, Uranotaenia, Ficalbia were recorded. Five species, Cx. thalassius, Cx. nebulosus, Cx. perfuscus, Cx. pocilipes and Fi. mediolineata are described the first time for Benin. The local mosquito species showed high susceptibility to a Bacillus sphaericus formulation (VectoLexR WDG) in a standardized field test. A dosage of 1 g/m2 was effective to achieve 100 percent mortality rate for Cx. quinquefasciatus late instar larvae in a sewage habitat, with a residual effect of up to 7 days. After more than 1 year of baseline data collection, operational larviciding with B. thuringiensis var. israelensis and B. sphaericus was commenced in 2006 in selected areas. Microbial insecticides products for larval control show great potential within IVM programmes and may augment control efforts against adult insects, such as the use of insecticide-treated bed nets or indoor wall spraying in many parts of Africa.
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