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The response of Culex quinquefasciatus (Diptera: Culicidae) to traps baited with carbon dioxide, 1-octen-3-ol, acetone, butyric acid and human foot odour in Tanzania

Published online by Cambridge University Press:  09 March 2007

L.E.G. Mboera ,
W. Takken  and
E.Z. Sambu
L.E.G. Mboera
Affiliation:
National Institute for Medical Research, Ubwari Field Station, PO Box 81, Muheza, Tanzania
W. Takken*
Affiliation:
Laboratory of Entomology, Wageningen Agricultural University, PO Box 8031, 6700 EH, Wageningen, The Netherlands
E.Z. Sambu
Affiliation:
National Institute for Medical Research, Ubwari Field Station, PO Box 81, Muheza, Tanzania
*
*Laboratory of Entomology, Wageningen Agricultural University, PO Box 8031, 6700 EH, Wageningen, The Netherlands Fax +31 317 484821 E-mail: willem.takken@users.ento.wau.nl
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Abstract

The responses of Culex quinquefasciatus Say to traps baited with carbon dioxide, 1-octen-3-ol, acetone, butyric acid and human foot odour were studied in the field in Muheza, north-east Tanzania using Counterflow Geometry (CFG) and Centers for Disease Control (CDC) traps. It was found that significantly more C. quinquefasciatusresponded to foot odour collected on nylon stockings than to clean nylon stockings (P < 0.05). Significantly more mosquitoes were caught in a CFG trap baited with carbon dioxide than in traps with either human foot odour, acetone or butyric acid. It was also found that in an outdoor situation a carbon dioxide baited CDC unlit trap collected over 12 times more C. quinquefasciatus than an unbaited CDC unlit trap and nine times more mosquitoes than CDC traps baited with 1-octen-3-ol alone (P < 0.05). The number of mosquitoes caught in a CDC trap baited with 1-octen-3-ol did not differ significantly from that of the unbaited CDC trap (P > 0.05). These results indicate that the Afrotropical C. quinquefasciatusrespond significantly better to traps baited with carbon dioxide than to either octenol, acetone or butyric acid, and that human foot odour contains stimuli to which C. quinquefasciatus is attracted under field conditions.

Type
Research Article
Information
Bulletin of Entomological Research , Volume 90 , Issue 2 , April 2000 , pp. 155 - 159
Copyright
Copyright © Cambridge University Press 2000

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