Laboratory studies with physiologically resistant and susceptible Blattella genmanica (L.) showed that many of the constituents in sprays used for cockroach control exhibited significant repellency to both strains of cockroaches when the cockroaches were exposed to treated white pine panels for 24 hr at 1, 7, and 21 days after the panels were treated. The data indicated that the presence of certain spray constituents may result in inc1fective control in the fic1d because of avoidance of treated areas by cockroaches. Most of the constituents tested were repellent to the susceptible strain for longer periods, which fact indicated that the repellent stimuli released innate behavioral patterns. Tests for evaluating the repellency of selected spray constituents on panels previously exposed to cockroaches for 24 hr indicated that some factor associated with this exposure decreased the repellent effects of the constituents. When technical chlordane was combined with the constituents, longer durations of repellency for Atlox 1045-A®, MGK® Repellent 11 (1,5a,6,9,9a,9b-hexahydro- 4a (4H) -dibenzofurancarboxaldehyde), MGK® Repellent 326 (dipropyl pyridine-2,5-dicarboxylate), methyl isobutyl ketone, methylene chloride, and Pyrocide 175® (20% pyrethrins) occurred in the resistant strain tests. The susceptible-strain data were not analyzed because of high mortality of the cockroaches. Constituent repellency to both strains was greater when formulated with chlordane (cockroach exposure factor excluded) than when tested alone. The duration of repellency of Atlox 1045-A, Triton X-155®, MGK Repellent 11, MGK Repellent 326, MGK® Tropital, piperonyl butoxide, and Pyrocide 175 was increased by addition of chlordane to the formulation. Thus, the presence of chlordane compounded the problem of repellency in spray formulations.
Document Type: Research Article
Publication date: October 15, 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.