Sublethal Effects of Carbaryl, Aminocarb, Fenitrothion, and Bacillus thuringiensis on the Development and Fecundity of the Spruce Budworm (Lepidoptera: Tortricidae)

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Spruce budworm, Choristoneura fumiferana (Clemens), larvae were exposed to four sublethal levels (50) of carbaryl, aminocarb, fenitrothion, and Bacillus thuringtensis Berliner (B.t.). Developmental rate, pupal weight, and fecundity of survivors were examined. Larva development of both sexes was significantly extended after exposure to 17 ppm of carbaryl and 100 IU/ml of B.t. Pupal weights of individuals fed 10 ppm of carbaryl were significantly less than untreated individuals. Female survivors of all aminocarb treatment levels (0.3–1.7 ppm) laid significantly fewer eggs.

Document Type: Research Article

Publication date: February 1, 1986

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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.
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