TOXICIDAD DE AGAVE AMERICANA Y FURCRAEA ANDINA (ASPARAGACEAE) SOBRE CULEX QUINQUEFASCIATUS (DIPTERA) Y HELEOBIA CUMINGII (MOLLUSCA)

Abstract

Agave americana L. and Furcraea andina Trel. (Asparagaceae), are important species for search of new pesticide agents. The dipteran Culex quinquefasciatus is common in aquatic environments of Lima and causes painful stings in people. The gastropod Heleobia cumingii D'Orbigny, 1835 (Cochliopidae) is a native snail found in lotic and lentic aquatic environments of Peru. Thus, the aim of this study was to evaluate the effect of the insecticide and molluscicide of dry leaves powder and juice in aqueous of A. americana and F. andina on C. quinquefasciatus and H. cumingii. The end point was the mortality of the larvae of C. quinquefasciatus and of the snail H. cumingii. Bark of F. andina showed higher insecticidal effect in relation to other aqueous extracts in toto and periderm evaluated in both plant species. The extract in toto of A. americana showed a greater effect molluscicide in relation to the rest of aqueous aqueous extracts of bark and periderm evaluated in both plant species. Aqueous extracts of dry powder of A. americana and F. andina had higher insecticides than molluscicidal effects. Instead, the aqueous extracts juice from A. americana and F. andina showed greater molluscicides effects than insecticides.