Abstract

BARRERA, JENNIFER et al. Compatibility of Encarsia formosa (Hymenoptera: Aphelinidae) with Commercial Products Under Laboratory Conditions. Acta biol.Colomb. [online]. 2013, vol.18, n.2, pp.265-270. ISSN 0120-548X.

The greenhouse white fly, Trialeurodes vaporariorum one of the major pests of tomatoes under greenhouse conditions, but, It s mainly controlled with chemical insecticides. However, there are alternative control strategies as entomopathogens fungi and parasitoids (Encarsia formosa). In this study we evaluated the compatibility of commercial product with adults and pupae of E. formosa under laboratory conditions. Eight treatments were evaluated for adults and pupae of the parasitoid, including two concentrations of the entomopathogenic fungus Beauveria bassiana (5 x 10⁷ and 5 x 10⁹ conidia/ml), commercial doses of four chemical products commonly used to control pests on tomato crops and two controls. These treatments were applied directly on parasitoids, and their mortality rate on adults and pupae were recorded daily. There was no difference in E. formosa pupae among relative with the Bacillus thuringiensis products (p > 0.05), indicating that it s compatible with the parasitoid pupae under laboratory conditions. Finally, it was found that products with active ingredients of Tiocyclam hidrogenoxalato and B. thuringiensis are incompatibles with E. formosa adults under laboratory conditions.

Keywords : Beauveria bassiana; Bacillus thuringiensis; biological control; chemical control parasitoid.

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