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The Relation of Weather to Two Population Declines of the Black-headed Budworm, Acleris variana (Fernald) (Lepidoptera: Tortricidae), in Coastal Alaska

Published online by Cambridge University Press:  31 May 2012

Donald C. Schmiege
Donald C. Schmiege
Affiliation:
Northern Forest Experiment Station, Forest Service, U.S. Department of Agriculture, Juneau, Alaska
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Abstract

Hot, dry weather accompanied the decline of black-headed budworm populations in 1955 and 1965. A study of weather records for southeast Alaska for the period 1945 to 1965 shows that the collapse of high populations occurred in years of unusually warm, dry weather during July. No consistent weather pattern was apparent during the years of population increases. The great reduction in budworm numbers occurred during the larval periods in both 1955 and 1965. No evidence of disease was found in either outbreak.

Type
Articles
Information
The Canadian Entomologist , Volume 98 , Issue 10 , October 1966 , pp. 1045 - 1050
Copyright
Copyright © Entomological Society of Canada 1966

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References

Silver, G. T. 1960. The relation of weather to population trends of the black-headed budworm Acleris variana (Fern.) (Lepidoptera: Tortricidae). Canad. Ent. 92: 401–410.CrossRefGoogle Scholar
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