Larvicidal efficacy of latex and extract of Calotropis procera (Gentianales: Asclepiadaceae) against Culex quinquefasciatus and Anopheles stephensi (Diptera: Culicidae)

Toxic activity was reported as LC^sub 50^ and LC^sub 90^ representing the concentrations that induced 50 and 90% mortality after 24 h. The results for the toxicity of milkweed derivatives against An. stephensi and Cx. quinquefasciatus larvae are presented in Table 1. Mosquito species, life stage, the plant parts and solvent used for extraction, phototoxic activity and the geographical origin of a plant compound are important factors in the efficacy of a phytochemical3,4.