Revista Colombiana de Entomología (2019) 45 (2 - e8606)

Suyanne Araújo-De-Souza, Gabriela Priscila de Sousa-Maciel, Nivia da Silva Dias-Pini, Marianne Gonçalves-Barbosa, Poliana Martins-Duarte and Patrik Luiz Pastori (2019)
Pathogenicity of Beauveria bassiana (Deuteromycota: Hyphomycetes) to the red cashew beetle Crimissa cruralis (Coleoptera: Chrysomelidae: Galerucinae: Blepharida-group) in laboratory conditions
Revista Colombiana de Entomología 45 (2 - e8606)
Abstract: 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Nivia da Silva Dias-Pini

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Crimissa cruralis	Cashew (Anacardium occidentale)	Brazil (NE)
Beauveria bassiana (entomopathogen)	Crimissa cruralis