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Inhibition of Larval Development and Egg Production in the Boll Weevil1 Following Ingestion of Ecdysone Analogues2

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Adult female Anthonomus grandis Boheman became permanently infecund, but males were not affected, when fed various analogues of ecdysone. A trihydroxy, 6-keto steroid was found to be particularly effective and was evaluated extensively as a female chemosterilant. Egg production was suppressed when females fed for only 6 days on diet containing the trihydroxy compound. None of the weevils died, and there was little recovery of fertility High temperatures during treatment and addition of a synergist to the diet favored the sterilizing action. The combined effects of y-irrardiation and steroid treatment were not completely additive, an indication that the 2 sterilizing agents acted on a common target. Also, the steroid seemed to antagonize the action of the chemosterilant busulfan (1,4-butanediol dimethanesulfonate) when both were given in the diet of the adults. When given in the larval diet, 3 ppm of the trihydroxy steroid lowered the yield of adults,and 10 ppm almost eliminated the formation of adults. Deformities occurred at all stages of development.

Document Type: Research Article

Publication date: August 1, 1970

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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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