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Penetration By Adult Lesser Grain Borers Through Multiwall Kraft Bags

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Segregated virgin males and segregated virgin females of Rhyzopertha dominica (F.) showed a much greater propensity to penetrate out of food-filled 5-ply kraft bags than did males and females confined together. The number of holes made by females was highest the 1st week of the test (when they were 2 weeks old); more holes were made by males the 2nd week of the test (when they were 3 weeks old). In 7 weeks, only 25% of bags containing both sexes were penetrated, but all bags containing only males or females were penetrated. About 24% of all holes chewed in the innermost ply by females were completed through all plies; males alone and both sexes together completed only 13.5 and 5.9% of their holes, respectively. In the outer ply, 80.5% of all holes were 0–10 mm from the bottom, perhaps because the insects were placed in the bottom of the bags.

Document Type: Research Article

Publication date: April 1, 1977

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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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