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1 December 2006 Urban agricultural land use and characterization of mosquito larval habitats in a medium-sized town of Côte d'Ivoire
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Abstract

Urban agriculture is common across Africa and contributes to the livelihoods of urban dwellers. Some crop systems create suitable mosquito breeding sites and thus might affect malaria transmission. The purpose of this study was to identify, map, and characterize potential mosquito breeding sites in agricultural land use zones in a medium-sized town of western Côte d'Ivoire and to assess risk factors for productive Anopheles breeding sites. Two surveys were carried out; one toward the end of the rainy season and the second one during the dry season. In all identified potential mosquito breeding sites, two experienced entomologists searched for the presence of Anopheles larvae and pupae with a standardized technique. Totals of 369 and 589 sites were found in the rainy and dry seasons, respectively, mainly in vegetable gardens and irrigated rice fields. Anopheles larvae were present in 50.7% and 42.4% of the sites investigated during the rainy and dry seasons, respectively. Typical Anopheles larval habitats were characterized by the presence of algae, the absence of floating vegetation, and the co-occurrence of Culex larvae. The highest Anopheles larval productivity was observed in rice paddies, agricultural trenches between vegetable patches, and irrigation wells. An indirect link could be established between the occurrence of productive Anopheles breeding sites and agricultural land use through specific man-made habitats, in particular agricultural trenches, irrigation wells, and rice paddies. Our findings have important bearings for the epidemiology and control of urban malaria in sub-Saharan Africa.

Barbara Matthys, Eliézer K. N'Goran, Moussa Koné, Benjamin G. Koudou, Penelope Vounatsou, Guéladio Cissé, Andres B. Tschannen, Marcel Tanner, and Jürg Utzinger "Urban agricultural land use and characterization of mosquito larval habitats in a medium-sized town of Côte d'Ivoire," Journal of Vector Ecology 31(2), 319-333, (1 December 2006). https://doi.org/10.3376/1081-1710(2006)31[319:UALUAC]2.0.CO;2
Received: 30 March 2006; Accepted: 19 July 2006; Published: 1 December 2006
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