Electroantennogram and behavioral responses of Culex quinquefasciatus (Diptera: Culicidae) females to chemicals found in human skin emanations

Journal of Medical Entomology
Sarika N PuriK Sekhar

Abstract

The southern house mosquito, Culex quinquefasciatus Say (Diptera: Culicidae), is closely associated with humans and is a vector of filariasis. Use of semiochemicals for control of mosquitoes is a novel and potentially ecofriendly control approach. Human skin emanations are known to attract mosquitoes. In the current study, olfactory and behavioral responses of host-seeking female Cx. quinquefasciatus to various chemical components of human skin emanations (carboxylic acids, alcohols, and aldehydes) were evaluated separately at three doses (0.01, 0.1, and 1 microg) for electroantennogram (EAG) and three doses (0.1, 1, and 10 microg) for behavioral assay. Results of EAG studies indicated that all carboxylic acids elicited significant olfactory responses except tetradecanoic acid (C14) and octadecanoic acid (C18). In particular, hexanoic acid (C6) elicited a maximum, eight-fold olfactory response compared with the solvent control. Ethylene glycol and benzyl alcohol exhibited significant EAG and behavioral responses, whereas among aldehydes, nonanal elicited high EAG and behavioral responses, but only at all three doses tested compared with control. Some carboxylic acids elicited significant behavioral responses, attracting approxi...Continue Reading

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Citations

Apr 11, 2014·International Journal of Biological Sciences·Anna SchultzeJürgen Krieger
Jun 20, 2012·Journal of Chemical Ecology·Philip E OtienoburuWoodbridge A Foster
Dec 25, 2009·Chemical Senses·Vincent HarracaCamilla Ryne
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Jan 29, 2019·Journal of Medical Entomology·Mohamed F SallamPhilip Koehler
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Apr 19, 2018·Proceedings of the National Academy of Sciences of the United States of America·Ailie RobinsonJetske G de Boer
Jun 23, 2010·Arthropod Structure & Development·Sharon R HillRickard Ignell

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