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We analyzed data on total annual Choristoneura fumiferana (Clemens) catch in light traps from 1961 to 1976 at 10 trap locations in the state of Maine. No defoliation caused by C. fumiferana had occurred at these locations between the 1950's and the general state-wide outbreak in the mid-1970's. Inspection of the total annual catch for each site showed that outbreaks were detectable from 4 to 7 years before defoliation occurred. When the data were clustered, outbreaks were detectable 5 years before the first evidence of defoliation within a region. Early detection methods would prove useful in forest management since 8 to 10 years would pass before tree mortality commenced.
Document Type: Research Article
Publication date: April 1, 1985
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.