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Efficacy of Beauveria bassiana for control of Tribolium castaneum with reduced oxygen and increased carbon dioxide

Permanent URL:
http://handle.nal.usda.gov/10113/28941
File:
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Abstract:
This study investigated the effect of atmosphere modification, a widely adopted means of insect control in stored products, on the efficacy of Beauveria bassiana for one of the most difficult to control pests, Tribolium castaneum. Oxygen reduction to 5% (±1%) as opposed to CO₂ elevation to 40% (±2%) for the first 72 h of fungus exposure resulted in significantly greater larval mortality than fungus exposure under ambient atmospheres. Both treatments reduced pupation of older larvae suggesting that slowed development may be a beneficial factor for fungal efficacy. CO₂ elevation but not O₂ reduction significantly affected the mortality of adult beetles that were exposed to the fungus. Carbon dioxide elevation significantly reduced B. bassiana's germination and growth rates, but oxygen reduction did not.
Author(s):
Lord, J.C.
Subject(s):
Tribolium (Coleoptera) , storage insects , insect control , entomopathogenic fungi , Beauveria bassiana , controlled atmosphere storage , oxygen , carbon dioxide , mortality , insect development , spore germination , microbial growth , stored product protection
Format:
p. 101-107.
Note:
Includes references
Source:
Journal of applied entomology = Zeitschrift für angewandte Entomologie 2009 Mar., v. 133, no. 2
Language:
English
Publisher:
Oxford, UK : Blackwell Publishing Ltd
Year:
2009
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.