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A simple apparatus was constructed and used to bioassay for the sex pheromone of Ceramica picla (Harris). As little as 10-8 female equivalent of the crude extract of abdominal tips elicited the response of the males, which raised their antennae, fluttered their wings, oriented to the tube carrying the pheromone vapors, grasped the tube with their legs, and curved their abdomens. On a given day, males can be used repeatedly for bioassay. Bioassays of liquid chromatographic fractions from extracted female tips indicated the presence of at least 2 pheromones, and chemical tests and gas chromatographic retention times indicated that I pheromone is an alcohol and the other is an acetate; both have about 10 carbon atoms connected to the functional group. In the laboratory bioassay, the 2 pheromones were more potent combined than separate.
Document Type: Research Article
Publication date: August 1, 1972
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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.