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Studies were conducted to determine if any adverse effects ensued when larvae of Heliothis virescens (F.) survived various feeding periods on cotton treated with Bacillus thuringiensis Berliner. Some of the 2nd instars that were fed B. thuringiensis-treated terminals for 6, 18, or 30 h and then transferred to an untreated diet survived. The ability of larvae to recover decreased with increases in dosage rate or exposure time. After feeding periods of 18 or 30 h, duration of the larval stage was significantly increased. Effects on pupae were similar. No effects on adult longevity, fecundity, egg viability, or F1 larval survival were detected.
Document Type: Research Article
Publication date: August 1, 1982
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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.