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1 November 2014 Comparative Behavioral Responses of Pyrethroid—Susceptible and—Resistant Aedes aegypti (Diptera: Culicidae) Populations to Citronella and Eucalyptus Oils
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Abstract

The objective of this study was to compare the behavioral responses (contact irritancy and noncontact spatial repellency) between susceptible and resistant populations of Aedes aegypti (L.) (= Stegomyia aegypti) to essential oils, citronella, and eucalyptus, Eucalyptus globulus, extracts, using an excito-repellency test system. N, N-diethyl-meta-toluamide (DEET) was used as the standard reference repellent. Mosquitoes included two long-standing insecticide susceptible colonies (U.S. Department of Agriculture and Bora Bora) and two pyrethroid-resistant populations recently obtained from Phetchabun and Kanchanaburi provinces in Thailand. Both DEET and citronella produced a much stronger excitation (“irritancy”) and more rapid flight escape response in both pyrethroid-resistant populations compared with the laboratory populations. Noncontact repellency was also greater in the two resistant populations. Eucalyptus oil was found to be the least effective compound tested. Differences in responses between long-established pyrethroid-susceptible colonies and newly established and naturally resistant colonies were clearly demonstrated. These findings also demonstrate the need for further comparisons using natural pyrethroid-susceptible populations for elucidation of factors that might contribute to different patterns of escape behavior.

© 2014 Entomological Society of America
Sunaiyana Sathantriphop, Kanutcharee Thanispong, Unchalee Sanguanpong, Nicole L. Achee, Michael J. Bangs, and Theeraphap Chareonviriyaphap "Comparative Behavioral Responses of Pyrethroid—Susceptible and—Resistant Aedes aegypti (Diptera: Culicidae) Populations to Citronella and Eucalyptus Oils," Journal of Medical Entomology 51(6), 1182-1191, (1 November 2014). https://doi.org/10.1603/ME13191
Received: 26 September 2013; Accepted: 1 August 2014; Published: 1 November 2014
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