Mango Weevil: Cobalt-60 -Irradiation of Packaged Mangoes

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Minimum doses of 20.6 and 32.9 krad of cobalt-60 S-radiation eliminated ca. 1200 eggs, larvae, pupae, and adults of Cryptorhynchus mangiferae (F.) from mangoes, Mangifera indica L., in corrugated fiberboard cartons with absorber thicknesses of 2.56 and 4.27 g/cm2, respectively. Since the opposite sides of each carton were irradiated, the absorber thickness was the product of the density of the carton and the mid-distance from the irradiated sides of the carton (6.5 cm for A-type and 8.0 cm for B-type). Also, the few irradiated adults that were found alive 6 months after treatment with 20.6 krad at absorber thicknesses of 3.20 and 3.97 g/cm2 were sterile and shortlived. Longevity of irradiated adults decreased inversely logarithmically with the dose, so the expected mean longevities were ca. 3.5 and 2.2 months for doses of 20.6 and 32.9 krad, respectively.

Document Type: Research Article

Publication date: August 1, 1974

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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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