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Virulence Screen of Beauveria Bassiana Isolates for Australian Carpophilus (Coleoptera: Nitidulidae) Beetle Biocontrol

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Boston, W., Leemon, D. and Cunningham, J. P. (2020) Virulence Screen of Beauveria Bassiana Isolates for Australian Carpophilus (Coleoptera: Nitidulidae) Beetle Biocontrol. Agronomy, 10 (8). p. 1207. ISSN 2073-4395

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Article Link(s): https://doi.org/10.3390/agronomy10081207

Publisher URL: https://www.mdpi.com/2073-4395/10/8/1207

Abstract

Carpophilus beetles are serious pests of Australian fruit and nut crops, causing significant damage through adult and larval feeding and vectoring plant diseases. Six strains of the entomopathogenic fungus Beauveria bassiana ((Balsamo) Vuillemin; Hypocreales: Cordycipitaceae), isolated from a range of hosts in Australia, together with one commercial strain, were screened for virulence to adult and larval stages of Carpophilus attacking stone fruits (C. davidsoni (Dobson)) and almonds (C. truncatus (Murray)) under laboratory conditions. The two species differed significantly in their susceptibility to the B. bassiana isolates. In the adult beetle assay, C. truncatus had a maximum Abbott’s control corrected mortality of 19% when treated with the most effective isolate, B54, compared to 52% for C.davidsoni. In larval bioassays, mortality rates for the two species were generally higher than adults: four isolates caused greater than 80% mortality in C. davidsoni; while only one isolate was considered effective against C. truncatus (causing 73% mortality), all other isolates caused less than 40% mortality. The results indicate promising potential for B. bassiana to be applied as a biopesticide as part of an integrated pest management strategy, which might take the form of a soil application against larvae or an autodissemination program using adult beetles. View Full-Text

Item Type:Article
Business groups:Animal Science
Keywords:Carpophilus beetle; entomopathogenic fungi; Beauveria Bassiana; biological control
Subjects:Science > Entomology
Plant pests and diseases
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Organic plant protection. Biological control
Animal culture > Insect culture and beneficial insects
Deposited On:22 Sep 2020 04:06
Last Modified:22 Sep 2020 04:06

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