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1 March 2001 Topical Application as a Method for Comparing the Effectiveness of Insecticides Against Cat Flea (Siphonaptera: Pulicidae)
Eric W. Moyses, Fritz J. Gfeller
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Abstract

A topical (micro-droplet) bioassay is described for the cat flea, Ctenocephalides felis (Bouché). Key parameters are the short carbon dioxide anesthetization and the use of 0.1 ml of acetone per flea. The method was used to compare the effectiveness of 13 insecticides. LD95 values in nanograms per flea were nitenpyram 0.68, fipronil 0.69, deltamethrin 0.70, imidacloprid 0.81, cypermethrin 5.4, fenthion 8.0, diazinon 12, permethrin 19, malathion 29, bendiocarb 170, DDT 710, propoxur 1,300, carbaryl >10,000. Experiments repeated 2–5 yr later, with five of the chemicals, in a different facility, showed only small shifts in potency (0.38- to twofold of the original LD50 values).

Eric W. Moyses and Fritz J. Gfeller "Topical Application as a Method for Comparing the Effectiveness of Insecticides Against Cat Flea (Siphonaptera: Pulicidae)," Journal of Medical Entomology 38(2), 193-196, (1 March 2001). https://doi.org/10.1603/0022-2585-38.2.193
Received: 18 May 1998; Accepted: 1 October 2000; Published: 1 March 2001
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