Date of Award:
5-1-1953
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Biology
Department name when degree awarded
Entomology
Committee Chair(s)
Datus M. Hammond
Committee
Datus M. Hammond
Committee
George F. Knowlton
Abstract
Several destructive outbreaks of the Engelmann spruce beetle in the Rocky Mountains have been reported since the turn of the century. A severe outbreak in the Sierra Blanca Mountains of New Mexico several years prior to 1907 was reported by Hopkins (1909). Hopkins in 1909 also found evidence of an epidemic that occurred about 50 years prior to that date on the Pike National Forest, and one 20 years prior to 1909 on the White River National Forest, both in Colorado. He also reported much damage on the Manti National Forest in Utah during 1905. A later epidemic, beginning about 1917, took place on Boulder Mountain in the Dixie National Forest in Utah (Mielke 1950) and covered a gross area of about 115,000 acres. A severe infestation swept through the northwest portion of Yellowstone National Park from 1933 to 1937, killing 90 percent of the spruce, above ten inches diameter breast height, in certain areas (Wygant 1944).
Recommended Citation
McComb, David, "The Use of Trap Trees for the Control of the Engelmann Spruce Beetle, Dendroctonus engelmanni Hopkins" (1953). Biology. 49.
https://digitalcommons.usu.edu/etd_biology/49
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