Beauveria Bassiana as a Pathogen of Scolytus Multistriatus
- 1 January 1959
- journal article
- research article
- Published by Oxford University Press (OUP) in Annals of the Entomological Society of America
- Vol. 52 (1) , 109-111
- https://doi.org/10.1093/aesa/52.1.109
Abstract
This muscardine fungus was the organism most frequently encountered in a survey for pathogens of the smaller European elm bark beetle, Scolytus multistriatus Marsh., and was found in larvae from five widely separated areas in Connecticut. Up to 6.5% of overwintering larvae in trees cut from city streets were infected, but under certain environmental conditions the fungus may be much more effective in killing the beetles. In one epizootic caused by this fungus, 97% of larvae were killed in the bark of trees in a shady grove, less than 4% in nearby trees standing in the open. In controlled laboratory experiments the fungus killed up to 99% of the larvae in 5 days. Pupae and adults were also susceptible, though adults were slightly less so than larvae.Keywords
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