Date of Award:
5-1982
Document Type:
Dissertation
Degree Name:
Doctor of Philosophy (PhD)
Department:
Biology
Committee Chair(s)
Donald W. Davis
Committee
Donald W. Davis
Committee
Wilford J. Hanson
Committee
Donald V. Sisson
Committee
Neal K. Van Alfen
Abstract
The relationship between clone and cone color in western white pine, Pinus monticola Douglas, to attack by the mountain pine cone beetle, Conophthorus monticolae Hopkins, was studied in the Sandpoint Seed Orchard, Idaho. A positive relationship was shown to exist during a 5 year field evaluation. Cone beetles were found to prefer dark colored cones and to attack certain clones at a higher rate than others.
Laboratory dissections did not indicate that cone color affected oviposition, brood development or brood mortality.
Olfactometer experiments demonstrated that olfactory stimuli are involved in the cone beetle attack sequence. Visual cues relating to cone color may be involved in the initial long range host orientation of attacking beetles.
Checksum
9ea68e16c7fc50cea1dfa51c26dcf46a
Recommended Citation
Jenkins, Michael J., "Western White Pine: The Effect of Clone and Cone Color on Attacks by the Mountain Pine Cone Beetle" (1982). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 7319.
https://digitalcommons.usu.edu/etd/7319
Included in
Copyright for this work is retained by the student. If you have any questions regarding the inclusion of this work in the Digital Commons, please email us at .