A method of insecticide evaluation using laboratory-reared plum curculio,Conotraehel1l8nenuphar (Hbst.), is reported. Test insects from the laboratory culture responded to the various treatments similarly to field-collected ovipositing beetles but dissimilar to nonovipositing beetles. The evaluation procedure was designed to disclose inherent toxicity and residual effectiveness under natural weathering conditions. Inherent toxicity was determined by topical application and by feeding. In the former, one microliter droplet of insecticide in acetone was applied to the dorsal thoracic area of test insects. Feeding tests were conducted by confining individual ovipositing beetles on treated immature apples. Results of feeding tests were based on reduction in feeding and ovipositionas well as mortality. Residue tests were based on mortality of beetles caged on prune foliage collected from the field at intervals following spraying. Measurements of inherent toxicity can be conducted in the laboratory without regard to season. The evaluation procedure reported is useful in preliminary screening and in accounting for results under practical conditions.
Document Type: Research Article
Publication date: October 1, 1959
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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.