Artigo
Activity of sesame leaf extracts to the leaf-cutting ant Atta sexdens rubropilosa (Hymenoptera : Formicidae)
Fecha
2004-01-01Registro en:
Sociobiology. Chico: California State Univ, v. 44, n. 3, p. 511-518, 2004.
0361-6525
WOS:000224660200005
2-s2.0-8444229249
Autor
Universidade Estadual Paulista (Unesp)
Univ Mogi das Cruzes
Universidade Federal de São Carlos (UFSCar)
Resumen
Crude extracts of new and old sesame leaves (Sesamum indicum, Linaeus) obtained by a sequential process of extraction were tested through contact experiments to investigate their toxicity to Atta sexdens rubropilosa (Forel) workers. Methanol extract of old leaves was toxic to leaf-cutting ants at the lower tested concentration (20mg.ml(-1)). This extract was fractioned and their fractions were tested showing a toxic effect of the methanol fraction. The methanol fraction was fractioned again and the sub fraction responsible for worker's toxicity is composed of some sugars.