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TEMPERATURE REQUIREMENTS FOR PISSODES TERMINALIS (COLEOPTERA: CURCULIONIDAE)

Published online by Cambridge University Press:  31 May 2012

Lorraine E. Maclauchlan  and
Julie E. Brooks
Lorraine E. Maclauchlan*
Affiliation:
British Columbia Ministry of Forests, 515 Columbia Street, Kamloops, British Columbia, Canada V2C 2T7
Julie E. Brooks
Affiliation:
Forest Health Management, P.O. Box 19, Granthams Landing, British Columbia, Canada V0N 1X0
*
1 Author to whom all correspondence should be addressed (E-mail: Lorraine.maclauchlan@gems3.gov.bc.ca).
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Extract

Pissodes terminalis Hopping attacks the current year's leader growth of lodgepole pine, Pinus contorta var. latifolia Engelmann (Pinaceae), causing its death or defects such as crooks, forks, and multiple leaders (Maher 1982). In southern British Columbia, the duration of the growing season can vary greatly among ecosystems as evidenced by the presence of several biogeoclimatic zones and subzones (Lloyd et al. 1990). In most of these zones, P. terminalis overwinters as fourth instar larva and adult emergence occurs the following season, thus requiring more than 1 year to complete its life cycle. However, in warmer ecosystems and in some silviculturally manipulated stands, its life cycle can be univoltine (Maclauchlan 1992; Cameron and Stark 1989). Knowledge of laboratory temperature requirements for P. terminalis development would enable future comparisons with field temperature accumulations and insect development.

Type
Articles
Information
The Canadian Entomologist , Volume 132 , Issue 6 , December 2000 , pp. 773 - 774
Copyright
Copyright © Entomological Society of Canada 2000

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References

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