Deterrent Effect of Neem Seed Kernel Extract on Oviposition of the Oriental Fruit Fly (Diptera: Tephritidae) in Guava

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In laboratory choice and no-choice tests, guava, Psidium guajava L., fruits treated with neem seed kernel extracts resulted in reduction in ovipositional preference of the oriental fruit fly, Bactrocera dorsalis (Hendel). In the choice test, the number of eggs laid in treated guava fruits at concentrations ranging from 0.2 to 4.0% was reduced from 87.5 to 99.2% compared with eggs in untreated fruit. Flies were not habituated to neem-treated fruits at concentrations of 0.2% or higher in 7 d. When a yellow plastic oviposition container filled with guava juice was placed together with a fruit treated with 4.0 or 20.0% extracts in a cage, all eggs were laid in the former, and none in the latter. These results indicate that neem seed kernel extract is an ovipositional deterrent for the oriental fruit fly.

Document Type: Research Article

Publication date: April 1, 1996

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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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