Pathogenicity of Beauveria bassiana (Deuteromycota: Hyphomycetes) to the red cashew beetle Crimissa cruralis (Coleoptera: Chrysomelidae: Galerucinae: Blepharida-group) in laboratory conditions.

The increased pest actions of the red cashew beetle Crimissa cruralis (Coleoptera: Chrysomelidae in Brazilian populations of cashew Anacardium occidentale (Anarcardiaceae) is a cause for concern. The entomopathogenic fungus, Beauveria bassiana, was evaluated as a biocontrol of larvae. The percent mortalities of second and third instar larvae produced by in vivo application of a commercial formulation containing the fungal spores were evaluated. Treatment of larvae at concentrations of 1.2 x 106, 2.5 x 106, 3.7 x 107 e 5.0 x 107 conidia/mL resulted in 49, 56, 66 and 72 % mortality within eight days, respectively. Based on the finding, it is recommended that the B. bassiana formulation should be employed at the lowest concentrations (1.2 x 106 and 2.5 x 106 conidia/mL) with repeat application to avoid possible inactivation of the fungus by abiotic environmental factors. Cost-benefit assessments of the use of this biological agent will be important for determining the economic feasibility of its application in the field.

• Autores: Araújo de Souza, Suyanne; Sousa Maciel, Gabriela Priscila de; Silva Dias Pini, Nívia Da; Gonçalves Barbosa, Marianne; Martins Duarte, Poliana; Pastori, Patrik Luiz
• Tipo de recurso: Article of journal
• Fecha de publicación: 2019
• Institución: Universidad del Valle
• Repositorio: Repositorio Digital Univalle
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.univalle.edu.co:10893/20798
• Acceso en línea: https://hdl.handle.net/10893/20798
• Palabra clave: Entomopathogenic fungus; Controlled conditions; Biological product; Caju; Hongos entomopatógenos; Condiciones controladas
• Rights: openAccess
• License: http://purl.org/coar/access_right/c_abf2