Enhancement of the Activity of Extracts Containing the Gypsy Moth1 Sex Attractant2
Authors: BIERL, B. A.; BEROZA, MORTON; COOK, D. A.; TARDIF, J. G. R.; PASZEK, E. C.
Source: Journal of Economic Entomology, Volume 64, Number 1, February 1971 , pp. 297-300(4)
Publisher: Entomological Society of America
Abstract:The finding that gyplure and gyptol, (cis-7-hexadecene- 1,10-diol 10.acetate), were ineffective as attractants of male Porthetria dispar (L.) in field evaluations has led the U. S. Department of Agriculture to resume use of the natural attractant in survey traps and has reopened the investigation to determine the structure of the gypsy moth sex attractant. When chemical and other tests on the purified natural attractant indicated that it might be an epoxide, the crude extract was treated with m-chloroper-benzoic acid on the supposition that additional attractant might be generated from an olefinic precursor. The treatment greatly increased the activity of the extract, and this increase in activity was traced to the hydrocarbon fraction. Conditions were then determined for maximum enhancement of activity on a large scale. The activity of a 385,000-tip lot of extract from insects field collected in Spain in 1969 was raised 11-fold, while the activity of a small lot of a much more potent extract from laboratory-reared insects was raised 2-fold. The chemical treatment should greatly decrease the high cost of preparing attractant for survey traps.
Document Type: Research Article
Publication date: February 1971
- 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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