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CONSUMPTION OF VARIOUS DOUGLAS-FIR CONE STRUCTURES BY BARBARA COLFAXIANA (LEPIDOPTERA: OLETHREUTIDAE)1

Published online by Cambridge University Press:  31 May 2012

T. Evan Nebeker
T. Evan Nebeker
Affiliation:
Department of Entomology, Mississippi State University, Mississippi State, Mississippi 39762
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Extract

During 1971 a study was conducted to determine the amount of the various Douglasfir cone structures (bracts, scales, and seeds) consumed by the Douglas-fir cone moth, Barbara colfaxiana (Kft.), in the Buckhead Seed Production Area, Willamette National Forest, Oregon. It was not the intent of this study to develop a complete energy budget for B. colfaxiana, but rather to determine the number of calories consumed, on the average, by an individual during the larval stage. The behavior of the various larval instars has been discussed by Radcliffe (1952), Keen (1958), Hedlin (1960), and Nebeker (1977). The calorie was selected as the unit of measure due to its usefulness in modeling energy transfer from one component to another in the forest ecosystem.

Type
Articles
Information
The Canadian Entomologist , Volume 109 , Issue 9 , September 1977 , pp. 1293 - 1294
Copyright
Copyright © Entomological Society of Canada 1977

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References

Hedlin, A. F. 1960. On the life history of the Douglas-fir cone moth, Barbara colfaxiana (Kft.) (Lepidoptera: Olethreutidae), and one of its parasites, Glypta evetriae Cush. (Hymenoptera: Ichneumonidae). Can. Ent. 92(8): 826–834.CrossRefGoogle Scholar
Keen, F. P. 1958. Cone and seed insects of western forest trees. Tech. Bull. U.S. Dep. Agric. 1169.Google Scholar
Nebeker, T. E. 1977. A partial life table for the Douglas-fir cone moth, Barbara colfaxiana (Lepidoptera: Olethreutidae). Can. Ent. 109: 943–951.CrossRefGoogle Scholar
Radcliffe, D. N. 1952. An appraisal of seed damage by the Douglas-fir cone moth in British Columbia. For. Chron. 28: 19–24.CrossRefGoogle Scholar