info:eu-repo/semantics/article
Composition, Repellent, and Insecticidal Activities of Two South American Plants against the Stored Grain Pests Tribolium castaneum and Tribolium confusum (Coleoptera: Tenebrionidae)
Fecha
2014-02Registro en:
Benzi, Verónica Soledad; Stefanazzi, Natalia; Murray, Ana Paula; Werdin Gonzalez, Jorge Omar; Ferrero, Adriana Alicia; Composition, Repellent, and Insecticidal Activities of Two South American Plants against the Stored Grain Pests Tribolium castaneum and Tribolium confusum (Coleoptera: Tenebrionidae); Hindawi Publishing Corporation; ISRN Entomology; 2014; 2-2014; 1-5
2314-5447
CONICET Digital
CONICET
Autor
Benzi, Verónica Soledad
Stefanazzi, Natalia
Murray, Ana Paula
Werdin Gonzalez, Jorge Omar
Ferrero, Adriana Alicia
Resumen
As part of a screening program to evaluate the biological activity of indigenous plants, we report the composition and the bioactivity of essential oils (EOs) extracted from Te de Burro ´ Aloysia polystachya [(Griseb.) Moldenke] and Lemon VerbenaAloysia citriodora [Palau] against two of the most widespread secondary pests of stored products, the red flour beetle Tribolium castaneum [Herbst] and the confused flour beetle Tribolium confusum [Jacqueline du Val]. Analysis by gas chromatography-mass spectrometry of the EOs led the identification of their major constituents and their relative proportions. EO ofA. citriodorashowed the highest repellent activity against both beetles (>70%). On the other hand, both plants showed fumigant toxicity only against T. confusum, without significant differences between them (LC50 values of 5.92 and 5.53 mg/L air forA. polystachya andA. citriodora, resp.). For contact toxicity (topical applications) the EO ofA. polystachyawas more effective (LD50 = 7.35ug/insect) than the EO ofA. citriodora (LD50 = 13.8g/insect) only against T. castaneum. On the other hand, T. confusum was not susceptible by contact to any of these EOs. These results provide important tools for the development of an Integrated Pest Management (IPM) program.