The effect of parathion and para-oxon has been studied electrophysiologically using labellar hairs of the house fly,Musca domestica L., and the black blow fly, Phormia regina (Megen). Direct applications of the insecticides were made in a glass eapil1l1ry placed over individual sensory hairs. When applied directly, para-oxon produced a five-fold increase in frequency of spikes with the house fly; a frequency higher than controls continued for 2.5minutes of a 30-minute period of study. Behavioral symptoms were studied following topical applications of the two oregano phosphates to the thorax of the flies. Symptoms produced were correlated with electrical responses recorded from labellar hairs of the affected flies. There was considerable distortion, variability of pattern, as well as increased frequency of spikes which occurred through the hyperexcitable period. Later, during knockdown, the frequency and pattern of spikes returned to conditions similar to controls. A short appraisal of the usefulness of the technique is given, particularly with respect to neurotoxins.
Document Type: Research Article
Publication date: June 1, 1962
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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.