Effects of Diflubenzuron on Longevity and Reproduction of Riptortus clavatus (Hemiptera: Alydidae)

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Laboratory studies were done to determine the effects of diflubenzuron on the longevity and reproduction of adult bean bugs, Riptortus clavatus (Thunberg). Irrespective of adult age at the time of topical application, the number of eggs laid per female was decreased to 0-26.1 % of the untreated controls by treatment with 1.0 J.Lgof diflubenzuron and to 7.6-58.3% by treatment with 0.01 J:Lg. Treatment of adults within 3 h of emergence significantly reduced not only adult longevity and the number of eggs laid per female but also adversely affected the period before oviposition and ovarian development. When newly emerged adults were treated with higher dosages of diflubenzuron, considerable adverse effects were apparent. We concluded that significant reduction in egg production by adults treated with diflubenzuron may be caused by the inhibition of ovarian development of the adult bugs.

Document Type: Research Article

Publication date: June 1, 1992

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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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