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Changes in Weight of Abraded and Unabraded Larval Pink Bollworm Under Submersion and Desiccation1

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Weight changes were determined in unabraded and lightly abraded fourth-instar nondiapause and diapause pink bollworm, Pectinophora gossypiella (Saunders), larvae subjected to aqueous submersion and desiccation. In general, abrasion brought about greater changes in water content and was accompanied by greater larval mortality, particularly among submersed larvae, with no differences observed between sexes. About twice as long was taken for the weight change in diapause larvae to equal the change in nondiapause larvae. The average percent weight change of abraded larvae was as much as 6 times greater than that of live unabraded larvae and as much as 10 times greater in larvae killed by the treatment.

Document Type: Research Article

Publication date: February 1, 1964

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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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