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MOSQUITO LARVICIDAL PROPERTIES OF AQUEOUS EXTRACT OF SENNA DIDYMOBOTRYA


JAO Ojewole
S Rahim
FO Shode

Abstract

Larvicidal properties of aqueous extracts of the leaves tem and root barks of Senna didymobotrya (Fabaceae) were evaluated against the malaria vector (Anopheles fluviatilis) under physiological conditions. Larvicidal assays showed that early larval stages were more prone to the lethal effects of the plant extracts, and that the root barks extract possessed the strongest larvicidal activity. Larvicidal effects were obtained after 3 hours of incubation of the larvae in 1,0.1, or 0.01% w/v solutions of the aqueous extracts. It was concluded that S. didymoborya is a potential mosquito larvicide.


Key Words: Senna didymobotrya; Fabaceae, Aqueous extracts; mosquito larvae; Larvicidal property; Anopheles fluviatilis


Nig. J. Nat Prod. And Med. Vol.4 2000: 46-47

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eISSN: 1118-6267