Evaluation of Two Insect Growth Regulators for the Bait-Block Method of Subterranean Termite (Isoptera: Rhinotermitidae) Control

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The experimental insect growth regulators fenoxycarb (Ro 13-5223) and 2-[p-(m-Fluorophenoxy)phenoxylethyl ethylcarbamate (Ro 16-1295) appeared to be effective in the bait-block technique because they caused superfluous intercaste production without adversely affecting feeding of Reticulitermes virginicus (Banks) and Coptotermes formosanus Shiraki. For R. virginicus, numbers of nonfunctional intercastes exceeded 50% at 4 weeks and survival was significantly reduced at 6 weeks. Larvae, workers, nymphs, and alates of this species developed morphological abnormalities. At 6 weeks, numbers of C. formosanus intercastes reached ca. 50%, but significant mortality was not observed. Differences in food substrate altered C. formosanus intercaste development; intercastes occurred on treated wood blocks but not on treated α-cellulose.

Document Type: Research Article

Publication date: October 1, 1984

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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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