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LIGHTNING IN THE ECOLOGY OF THE SOUTHERN PINE BEETLE, DENDROCTONUS FRONTALIS (COLEOPTERA: SCOLYTIDAE)

Published online by Cambridge University Press:  31 May 2012

J. D. Hodges  and
L. S. Pickard
J. D. Hodges
Affiliation:
Southern Forest Experiment Station, USDA Forest Service, Pineville, Louisiana
L. S. Pickard
Affiliation:
Southern Forest Experiment Station, USDA Forest Service, Pineville, Louisiana
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Abstract

Loblolly pine trees struck by lightning offer a favorable attack and brood environment for the southern pine and Ips beetles. In central Louisiana lightning strikes reduced oleoresin exudation pressure, oleoresin flow, and relative water content of inner-bark tissue and resulted in a decrease in sucrose and an increase in reducing-sugar content of inner bark. Interspecific competition was much greater in struck trees than nonstruck trees. Among struck trees, those with highest carbohydrate levels produced the most numerous broods of the southern pine beetle.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 1 , January 1971 , pp. 44 - 51
Copyright
Copyright © Entomological Society of Canada 1971

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