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AGGREGATION BEHAVIOR OF DENDROCTONUS PONDEROSAE (COLEOPTERA: SCOLYTIDAE) IN RESPONSE TO CHEMICAL MESSENGERS1

Published online by Cambridge University Press:  31 May 2012

G. B. Pitman  and
J. P. Vité
G. B. Pitman
Affiliation:
Boyce Thompson Institute for Plant Research, Yonkers, New York
J. P. Vité
Affiliation:
Boyce Thompson Institute for Plant Research, Yonkers, New York
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Abstract

Populations of Dendroctonus ponderosae Hopk. aggregate on pine trees in response to a combination of host- and insect-produced volatiles. Release of the insect-generated volatiles by defecation coincides with the release of host volatiles as resin exudes from the galleries initiated by the female beetles. When tested with oleoresin under field conditions, synthetic trans-verbenol, the major insect pheromone, was highly attractive to both sexes of D. ponderosae. Also, emergent female Dendroctonus brevicomis Lec. and Dendroctonus frontalis Zimm. crushed to powder at −70 °C were attractive; emergent females of both species are known to contain large amounts of trans-verbenol. Trans-verbenol per se, however, was not attractive to walking or flying D. ponderosae.

Type
Articles
Information
The Canadian Entomologist , Volume 101 , Issue 2 , February 1969 , pp. 143 - 149
Copyright
Copyright © Entomological Society of Canada 1969

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