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THE EFFECTS OF BARK MOISTURE ON POLYGRAPHUS RUFIPENNIS (COLEOPTERA: SCOLYTIDAE) ADULTS AND THEIR DEVELOPING BROODS1

Published online by Cambridge University Press:  31 May 2012

G. E. Beanlands
G. E. Beanlands
Affiliation:
Faculty of Forestry, University of New Brunswick, Fredericton
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Abstract

Laboratory experiments were conducted to determine the effects of bark moisture content on the survival and development of Polygraphus rufipennis (Kirby). Adults and immature stages were reared in white spruce bark of five different moisture contents for 20, 40, and 60 days. Adult activity and brood success were related to the moisture content of the bark with the adverse effects of the drier bark becoming more pronounced with time. After 40 days factors associated with high bark moisture levels, such as fungus and rate of decomposition, may have been responsible for a decrease in survival and rate of development in the moister bark.

Type
Articles
Information
The Canadian Entomologist , Volume 99 , Issue 6 , June 1967 , pp. 561 - 564
Copyright
Copyright © Entomological Society of Canada 1967

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References

Beanlands, G. E. 1966. A laboratory-rearing method for observing adult bark beetles and their developing broods. Can. Ent. 98: 412–414.CrossRefGoogle Scholar
Price, P. W. 1966. Some relationships between Polygraphus rufipennis (Kirby) (Coleoptera: Scolytidae) and spruces in New Brunswick. Can. Ent. 98: 239–241.CrossRefGoogle Scholar
Rudinsky, J. A. 1962. Ecology of Scolytidae. A. Rev. Ent. 7: 327–348.CrossRefGoogle Scholar