Biochemical Investigation of Different Extracts and Larvicidal Activity of Tagetes minuta L. on Anopheles stephensi Larvae

Tagetes minuta l. is considered as an annual plant growing in the temperate zonesof south america. it has been used as carminative, anti-inflammatory, anti-abortion,vermifuge, bronchodilator and hypotensive. in the current study the locally culturedplant of tagetes minuta l. was studied for phytochemical and larvicidal properties.the phytochemical analysis of aerial parts of the plant exhibited the presence ofsaponins, terpenoids, tannins, alkaloids and flavonoids. the efficacy of methanolicextract of the plant was tested against malaria vector, anopheles stephensi. the probitanalysis from the concentration and mortality exhibited the lc50 and lc90 valuesof 2.5 mg/l and 11.0 mg/l, respectively. also the efficacies of the ethyl acetate,chloroform, methanolic and aqueous extracts of the plant were tested on anophelesstephensi with the lc50 concentration of the methanolic extract. the results showedthat the chloroform extract had the highest efficacy.