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Influence of Nutrients in the Adult Diet on Diapause in the Boll Weevil1 •2•3

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The ratio of proteins and carbohydrates in the adult diet of Anthonomus grandis Boheman was varied to study its effect on the initiation of diapause. Removal of germinated cottonseed puree from the standard diet greatly increased the incidence of diapause, but this effect was offset partially by increasing the level of protein and decreasing the level of sucrose. Similarly, a reduction of protein and an increase in sucrose caused greater numbers of insects to enter diapause.

We were not able to extract the component (s) of germinated cottonseed that prevent initiation of diapause with chloroform, acetone, water, and dilute NaOH, in succession. A cottonseed flour or the alkali-soluble protein of that flour was equal to or better than germinated cottonseed in preventing the initiation of diapause.

Document Type: Research Article

Publication date: August 1, 1971

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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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