Strains of German cockroaches, Blattella germanica (L.), from 6 States in the Third U.S. Army area were tested for resistance to chlordane, malathion, diazinon, and propoxur. Resistance was evident in cockroaches tested on chlordane and malathion with LT50 (hours) values ranging from 3.7 to >72.01 and 0.9 to >72.01, respectively. There was no resistance to diazinon, evidenced by LT50 values ranging from 0.6 to 1.8. Data on susceptibility to propoxur were reported, but no reference standard or normal strain was available for comparison.
Document Type: Research Article
Publication date: April 1, 1971
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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.