International Journal of Pure and Applied Zoology

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Adulticidal Activity of Pithecellobium Dulce (Roxb.) Benth. and Delonix Elata (L.) Gamble (Family: Fabaceae) Against The Malaria Vector Anopheles Stephensi (Liston) (Diptera: Culicidae)

Bioactive plant materials have attracted growing interest for their potential implications in mosquiro control programs. In this study, we evaluated the adulticidal activity of different solvent crude extracts of Pithecellobium dulce and Delonix elata against the malaria vector Anopheles stephensi (Diptera: Culicidae). Bioassays were carried out following the WHO method for determination of adulticidal activity against mosquitoes. The adult mortality was observed after 24 h of exposure. All extracts showed moderate adulticide effects; however, the highest adult mortality was found in the leaf methanol extract of both P. dulce and D. elata against the adults of An. stephensi with the LC50 and LC90 values were 197.91, 137.33 mg/L and 372.27, 259.88 mg/L, respectively. This result suggests that the leaf and seed solvent extracts of P. dulce and D. elata have the potential to be used as an ideal eco-friendly approach for the control of vector mosquito as target species. This is the first report on the mosquito adulticidal activity of P. dulce and D. elata plants against malarial vector An. stephensi.

Author(s): Marimuthu Govindarajan, Mohan Rajeswary, S. L. Hoti, Giovanni Benelli and A. Amsath