Insecticide Resistance in the Cat Flea (Siphonaptera: Pulicidae)

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Adult cat fleas, Ctenocephalides felis (Bouché), from laboratory colonies originating from two widely divergent habitats (California and Florida) were exposed to residues of various insecticides to demonstrate differences in susceptibilities between the two strains. Bendiocarb, carbaryl, chlorfenvinphos, chlorpyrifos, diazinon, isofenphos, malathion, propetamphos, and propoxur were tested. Resistance of the newly colonized strain originating in Florida estimated by comparison of LC50's was ca. 3.5- to 28-fold compared with the strain that had originated in California and had been in colonization for ca. 2 decades. Of the chemicals tested, chlorpyrifos was most effective against both strains of cat fleas (Florida LC50 = 1.1 mg/929 cm2, California LC50 = 0.11 mg/929 cm2). Malathion was least effective on the Florida strain. Propoxur was least effective against the California strain.

Document Type: Research Article

Publication date: February 1, 1986

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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.
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