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1 January 2003 Development of an In Vitro Method for the Evaluation of Candidate Repellents Against Leptotrombidium (Acari: Trombiculidae) Chiggers
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Abstract

We developed a rapid and economical in vitro procedure with which to evaluate the efficacy of candidate repellents against chiggers. The procedure requires only 5 min and a small number of chiggers to obtain a valid estimate of the median effective dose. We used this procedure to evaluate the repellent activity of 11 compounds against the chigger, Leptotrombidium imphalum Vercammen-Grandjean and Langston. Median effective doses were determined for 10 of the 11 compounds. DM-165-2 (N,N-diethyl-3-flurobenzamide) was the only compound that was significantly more effective than deet.

Kriangkrai Lerdthusnee, Nittaya Khlaimanee, Taweesak Monkanna, Siriporn Mungviriya, Warisa Leepitakrat, Mustapha Debboun, and Russell E. Coleman "Development of an In Vitro Method for the Evaluation of Candidate Repellents Against Leptotrombidium (Acari: Trombiculidae) Chiggers," Journal of Medical Entomology 40(1), (1 January 2003). https://doi.org/10.1603/0022-2585-40.1.64
Received: 19 April 2002; Accepted: 1 June 2002; Published: 1 January 2003
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