TY - JOUR AU - Araújo-de-Souza, Suyanne AU - De Sousa-Maciel, Gabriela Priscila AU - Dias-Pini, Nívia Da Silva AU - Gonçalves-Barbosa, Marianne AU - Martins-Duarte, Poliana AU - Pastori, Patrik Luiz PY - 2020/01/29 Y2 - 2024/03/29 TI - Pathogenicity of Beauveria bassiana (Deuteromycota: Hyphomycetes) to the red cashew beetle Crimissa cruralis (Coleoptera: Chrysomelidae: Galerucinae: Blepharida-group) in laboratory conditions JF - Revista Colombiana de Entomología JA - Rev. Colomb. Entomol. VL - 45 IS - 2 SE - Control / Scientific notes DO - 10.25100/socolen.v45i2.8606 UR - https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/8606 SP - e8606 AB - <p>The increased pest actions of the red cashew beetle <em>Crimissa cruralis </em>(Coleoptera: Chrysomelidae in Brazilian populations of cashew <em>Anacardium occidentale</em> (Anarcardiaceae) is a cause for concern. The entomopathogenic fungus, <em>Beauveria bassiana</em>, was evaluated as a biocontrol of larvae. The percent mortalities of second and third instar larvae produced by <em>in vivo</em> application of a commercial formulation containing the fungal spores were evaluated. Treatment of larvae at concentrations of 1.2 x 10<sup>6</sup>, 2.5 x 10<sup>6</sup>, 3.7 x 10<sup>7</sup> e 5.0 x 10<sup>7</sup> conidia/mL resulted in 49, 56, 66 and 72 % mortality within eight days, respectively. Based on the finding, it is recommended that the <em>B. bassiana </em>formulation should be employed at the lowest concentrations (1.2 x 10<sup>6</sup> and 2.5 x 10<sup>6 </sup>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.</p> ER -