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Efficacy of Fenoxycarh Against Mosquitoes (Diptera: Culicidae) and Its Persistence in the Laboratory and Field

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Fenoxycarb is effective against susceptible and organophosphorus-resistant mosquitoes. When larvae are exposed, mortality occurs in the pupal stage or abnormal adults are formed. Most sensitive are fourth instars 19–27 h before pupation. A dosage of 0.02 kg/ha was effective for controlling larvae when applied by hand can or aircraft. Fenoxycarb is moderately stable in water over a pH range of 6.5–10 and a temperature range of 10–38. It tends to adsorb onto organic matter and this may largely limit its persistence in water in the fields. Residues in the water could only be detected up to 48 h after application of 0.03 or 0.02 kg/ha. Bluegill sunfish, Lepomis macrochirus, accumulate a continuous dose of 1 ppm fenoxycarb from water ca. 20-fold into their tissue; however, the tissue residues decline quickly after the fish are placed in untreated rinse water.

Document Type: Research Article

Publication date: February 1, 1987

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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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