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Pollen samples contaminated with 5% carbaryl dust at levels of 100 ppm and 10 ppm were found to kill 49 and 7 times as many honey bees, Apis mellifera L, respectively, as uncontaminated pollen when bees foraged on the samples in flight cages. More than 10 weeks after preparation. the contaminated pollens were still toxic to bees that foraged on them, or to bees fed the pollen inside their colonies or in laboratory cages, The pollen originally receiving 100 ppm carbaryl retained consider- ably more toxicity than that which had received 10 ppm. Bee bread made from pollen containing 100 ppm also was toxic to bees when fed in laboratory cages.
Document Type: Research Article
Publication date: April 1, 1970
More about this publication?
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.