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Joint action of Beauveria bassiana and the insect growth regulators diflubenzuron and novaluron, on the migratory locust, Locusta migratoria

Permanent URL:
http://handle.nal.usda.gov/10113/58597
File:
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Abstract:
Beauveria bassiana (Balsamo) Vuillemin and sublethal concentrations of the insect growth regulators (IGR) diflubenzuron and novaluron were applied simultaneously and sequentially to second-instar Locusta migratoria migratorioides (Sauss.) to determine the interaction between these materials and an entomopathogenic fungus. Nymphs were fed on corn leaf disks treated with several concentrations of each IGR, and a constant dose of B. bassiana was applied topically. Additive interaction was demonstrated in all instances when second-instar nymphs were exposed to diflubenzuron or novaluron simultaneously with B. bassiana treatment, and when the fungus was applied first and IGR after 48 h. Additive interaction was also exhibited when novaluron was applied first and B. bassiana after 48 h. Antagonism was demonstrated when nymphs were fed diflubenzuron-treated corn leaves first, then after 48 h were treated with B. bassiana. The additive interaction that was observed in our experiments could still be useful to achieve efficacious levels of acridid control at low rates of an IGR along with a biological control agent such as an entomopathogenic fungus.
Author(s):
N. Bitsadze , S. Jaronski , V. Khasdan , E. Abashidze , M. Abashidze , A. Latchininsky , D. Samadashvili , I. Sokhadze
Subject(s):
Beauveria bassiana , Locusta migratoria migratorioides , biological control , biological control agents , corn , diflubenzuron , entomopathogenic fungi , insect control , integrated pest management , leaves , novaluron , nymphs
Note:
USDA Scientist Submission
Source:
Journal of pest science 2013 2 15 v.86 no.2
Language:
English
Year:
2013
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.