Lethal and sublethal effects of triterpenes from Junellia aspera (Verbenaceae) on the grain storage insect Tribolium castaneum (Coleoptera: Tenebrionidae) Efectos letales y subletales de triterpenos aislados de Junellia aspera (Verbenaceae) sobre el insecto de granos almacenados Tribolium castaneum (Coleoptera: Tenebrionidae)

Duration of the pupal stage, toxic activity and nutritional indices induced by oleanolic acid (I), maslinic acid (II), and daucosterol (III) isolated from the native plant Junellia aspera and chemical derivatives, were determinated on larvae, and adults of Tribolium castaneum (Herbst). The current s...

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Bibliographic Details
Main Authors: Carlos R. Pungitore, Matías García, José C. Gianello, Carlos E. Tonn, Marta E. Sosa
Format: Article
Language:English
Published: Sociedad Entomológica Argentina 2005-07-01
Series:Revista de la Sociedad Entomológica Argentina
Subjects:
Online Access:http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802005000100010
Description
Summary:Duration of the pupal stage, toxic activity and nutritional indices induced by oleanolic acid (I), maslinic acid (II), and daucosterol (III) isolated from the native plant Junellia aspera and chemical derivatives, were determinated on larvae, and adults of Tribolium castaneum (Herbst). The current study shows that these triterpenes acts as acute toxic compounds when were applied topically and/or incorporated into the food of the red flour beetle. Nevertheless, no activity related with the nutritional status of this insect was produced.<br>Se determinó la duración del estado pupal, actividad tóxica e índices nutricionales sobre larvas y adultos de Tribolium castaneum (Herbst) inducidos por ácido oleanólico (I), ácido maslínico (II) y daucosterol (III) aislados de Junellia aspera y derivados químicos. Se demostró que los triterpenos evaluados actúan como tóxicos agudos cuando se aplican por topicación y/o son incorporados en el alimento. Los compuestos ensayados no presentaron actividad relacionada con el estado nutricional de los insectos.
ISSN:0373-5680
1851-7471