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INFLUENCE OF LOW TEMPERATURES ON ATTACK, OVIPOSITION, AND LARVAL DEVELOPMENT OF MOUNTAIN PINE BEETLE, DENDROCTONUS PONDEROSAE (COLEOPTERA: SCOLYTIDAE)

Published online by Cambridge University Press:  31 May 2012

W. F. McCambridge
W. F. McCambridge
Affiliation:
Rocky Mountain Forest and Range Experiment Station,1Fort Collins, Colorado
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Abstract

Mountain pine beetles attacked logs, mated, and constructed egg galleries slowly at 4.4 °C under laboratory conditions. No eggs were deposited in 6 weeks. Attack and oviposition increased above this temperature.

Larvae of different initial sizes grew at the same rate throughout each test temperature from 4.4 °C to 12.8 °C. Rate of growth increased with increase in temperature. Larval growth at 2.2 °C is difficult to prove because of very high mortality among smallest individuals.

Type
Articles
Information
The Canadian Entomologist , Volume 106 , Issue 9 , September 1974 , pp. 979 - 984
Copyright
Copyright © Entomological Society of Canada 1974

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