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Monitoring for insecticide resistance in field-collected strains of the German cockroach (Dictyoptera: Blattellidae)



Monitoring for insecticide resistance in field-collected strains of the German cockroach (Dictyoptera: Blattellidae)



Journal of Economic Entomology 82(2): 336-341



Forty-five field-collected strains of German cockroaches, Blattella germanica (L.), were tested for resistance to 12 different insecticides by the time-mortality response method in comparison with a known susceptible strain. Only low to moderate resistance to diazinon, chlorpyrifos, and acephate was detected. Resistance to malathion was widespread; about half of the strains tested showed high resistance. High resistance to the carbamates propoxur and bendiocarb also occurred. High resistance was uncommon with propoxur, but about 35 strains were highly resistant to bendiocarb. High resistance to pyrethrins was observed in about half of the strains tested. Resistance to the pyrethroids allethrin, permethrin, phenothrin, fenvalerate, and cyfluthrin was detected in some of the strains examined. All of the strains tested were susceptible to one or more of the insecticides used. These results indicate that, although resistance is a serious problem in this species, satisfactory control should be possible by selection of an appropriate insecticide.

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Accession: 001888961

Download citation: RISBibTeXText

PMID: 2708624

DOI: 10.1093/jee/82.2.336



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