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, 99 (2), 211-8

Activity of Oil-Formulated Beauveria Bassiana Against Triatoma Sordida in Peridomestic Areas in Central Brazil

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Activity of Oil-Formulated Beauveria Bassiana Against Triatoma Sordida in Peridomestic Areas in Central Brazil

Christian Luz et al. Mem Inst Oswaldo Cruz.

Abstract

Field tests were carried out during the rainy season of 2001/2002 in São Luís de Montes Belos, Goiás, Brazil, to evaluate the potential of the entomopathogenic fungus, Beauveria bassiana, against peridomestic Triatoma sordida. An oil-water formulation of the isolate CG 14 (Embrapa) was applied in triatomine infested hen houses of four farms at a final concentration of 10(6) conidia/cm2. Numbers of T. sordida decreased over the next 25 days, after application of the fungus, and B. bassiana developed on dead insects in one hen house. A high number of B. bassiana colonies was detected in substrates collected in treated hen houses 24 h after application of CG 14. In the following three months the presence of B. bassiana declined to values found before treatment.

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