Sterilization of the Azuki Bean Weevil, Callosobruchus chinensis,1 by Metepa and Hempa2
Authors: BORKOVEC, ALEXEJ B.; NAGASAWA, SUMIO; SHINOHARA, HIROSHI
Source: Journal of Economic Entomology, Volume 61, Number 3, June 1968 , pp. 695-698(4)
Publisher: Entomological Society of America
Abstract:Azuki bean weevils, Gallosobruchus chinensis (L.), were sterilized with metepa by topical application, dipping, contact treatment, and fumigation. These methods arc suitable for bioassay of metepa and for testing other candidate chemosterilants. The sterilizing effects were permanent and their intensity increased with time elapsed after treatment. With topical application, the median dose that inhibited oviposition was 29.499 µg per weevil, the LD50 was 177.79 µg per female and 117.64 µg per male, and the median sterilizing dose was 0.940 µg per weevil. When the weevils were dipped in solutions of metepa, hempa, and a 1:19 mixture of metepa and hempa the concentration- unhatchability regression lines were parallel, indicating a similar action of the 2 chemosterilants. In all experiments, both sexes were treated with equal amounts of sterilant. Results were analyzed statistically, and appropriate regression equations were calculated.
Document Type: Research Article
Publication date: June 1, 1968
- 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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