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- W2034649595 abstract "Two biological formulations of the microbial agents Bacillus thuringiensis and Bacillus sphaericus, known by their trade names Vectobac 12 AS and VectoLex CG (Corn Cob) granules, respectively, were obtained from Valent Biosciences Company (formerly Abbott Laboratories) of North Chicago, USA, and applied to control mosquito breeding sites. The B. sphaericus formulation was used in trials against Culex and Anopheles mosquito larvae in gutters at Labadi, Nungua and the estuary of the Chemu Lagoon, whilst the B. thuringiensis formulation was used against Anopheles species in irrigated paddy rice fields at Akuse in the Eastern Region of Ghana. B. sphaericus was applied at 1.8 gm2 to achieve a concentration for the gutter treatments. In the rice fields, B. thuringiensis was applied at increasing doses of 0.095 gm-2, 0.19 g m-2 and 0.38 g m-2. The results showed a 99-100 per cent mortality of all larvae with both B. sphaericus and B. thuringiensis for 5- 16 days after applying the formulations at selected breeding sites. Trials conducted with these formulated microbial agents and their efficiency in controlling mosquito vectors of malaria and filariasis are discussed. Résumé Dans ces expériences deux formules biologiques des agents microbiens Bacillus thuringiensis et Bacillus sphaericus connus par leurs noms de marque VectoLex CG (épis de maïs ) granules respectivement, étaient obtenus de la Compagnie Valent Biosciences (autrefois Laboratoires d'Abbott) de Chicago du Nord, USA et appliquée pour enrayer les zones de reproduction de moustique. La formule de Bacillus sphaericus était appliquée aux essais contre les larves de moustique Anophèle et Culex dans les caniveaux de Labadi, Nungua et dans les estuaires de la Lagune Chemu, alors que la formule de Bacillus thuringiensis était appliquée contre les espèces d'anophèle dans les rizières irriguées à Akuse dans la Région de l'Est du Ghana. Bacillus sphaericus était appliquée à 1.8 g> m² , pour atteindre une concentration pour les traitements des caniveaux. Dans les rizières Bacillus thuringiensis était appliquée aux doses croissantes de 0,095 g> m² , 0,19 g> m² et 0,38 g> m². Les résultats indiquaient une mortalité de 99% à 100% de tous les larves avec B. sphaericus et B. thuringiensis de 5 à 16 jours après l'application des formules aux zones de reproduction sélectionnées. Ce rapport est essentiellement axé sur les essais menés avec ces agents microbiens formulas et leur efficacité dans la lutte contre les vecteurs de moustique du paludisme et de la filariose. Ghana Journal of Science Vol. 46 2006: pp.37-45" @default.
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- W2034649595 date "2008-02-22" @default.
- W2034649595 modified "2023-09-28" @default.
- W2034649595 title "The use of two biological formulations of <i>Bacillus Thuringiensis</i> and <i>Bacillus Sphaericus</i> in the control of mosquito vectors of malaria in drains and rice fields" @default.
- W2034649595 doi "https://doi.org/10.4314/gjs.v46i1.15914" @default.
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