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Mating of Untreated and Tepa-Chemosterilized Fall Armyworm1 Moths2,3

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As the length of confinement and the ratio of male to female Spodoptera frugiperda (J. E. Smith) were increased, the frequency of mating also increased. Generally, females do not mate more than once during a given night but may male as many as 7 limes during 5 days. Males were capable of mating each night but never more than once each night. The record number of matings for 1 male was 12.

Males were sterilized with tepa and allowed lo compete with untreated males (ratios ranging from 4:1 to 8:1) for untreated females (male to female ratios ranging from 1:1 to 4:1). Based on reduction in egg hatch, the criterion of competitiveness, the sterile male is not able to compete effectively with untreated males for females.

Document Type: Research Article

Publication date: June 1, 1968

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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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