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2004•Socio-Environmental Systems ModelingOpen access

GC-EAG analysis of human odours that attract the malaria mosquito Anopheles gambiae sensu stricto

Yutong Qiu, Renate C. Smallegange, Hans M. Smid, Joop J. A. van Loon, Agnes M. Galimard, Maarten A. Posthumus, Teris André van Beek, Willem Takken

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Abstract

A coupled gas-chromatography-electroantennography (GC-EAG) method was used to identify kairomones that mediate the host-seeking behaviour of An. gambiae. Nylon stockings that had been worn by human volunteers were found to be highly attractive to female An. gambiae in olfactometer experiments. Tenax-trapped headspace of 15 pairs of stockings and extracts thereof were analysed with GC-EAG. EAG responses were detected repeatedly at 23 retention times, and 14 compounds were identified that elicited on-line EAG responses. The role of these compounds as kairomones in the host-seeking behaviour of An. gambiae is discussed.

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What this paper is about

A coupled gas-chromatography-electroantennography (GC-EAG) method was used to identify kairomones that mediate the host-seeking behaviour of An. gambiae. Nylon stockings that had been worn by human volunteers were found to be highly attractive to female An. gambiae in olfactometer experiments. Tenax-trapped headspace of 15 pairs of stockings and extracts thereof were analysed with GC-EAG. EAG responses were detected repeatedly at 23 retention times, and 14 compounds were identified that elicited on-line EAG responses. The role of these compounds as kairomones in the host-seeking behaviour of An. gambiae is discussed.

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Available abstract

A coupled gas-chromatography-electroantennography (GC-EAG) method was used to identify kairomones that mediate the host-seeking behaviour of An. gambiae. Nylon stockings that had been worn by human volunteers were found to be highly attractive to female An. gambiae in olfactometer experiments. Tenax-trapped headspace of 15 pairs of stockings and extracts thereof were analysed with GC-EAG. EAG responses were detected repeatedly at 23 retention times, and 14 compounds were identified that elicited on-line EAG responses. The role of these compounds as kairomones in the host-seeking behaviour of An. gambiae is discussed.

Key concepts: Olfactometer, Kairomone, Electroantennography, Tenax, Anopheles gambiae, Sensu stricto, DEET, Biology

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GC-EAG analysis of human odours that attract the malaria mosquito Anopheles gambiae sensu stricto — Research Paper | ScholarLens