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  • 标题:Upwind responses of Anopheles stephensi to carbon dioxide and L-lactic acid: an olfactometer study
  • 本地全文:下载
  • 作者:S.-M. Omrani ; H. Vatandoost ; M.A. Oshaghi
  • 期刊名称:Eastern Mediterranean Health Journal
  • 印刷版ISSN:1020-3397
  • 出版年度:2012
  • 卷号:18
  • 期号:11
  • 页码:1134-1142
  • 出版社:World Health Organization
  • 摘要:

    Excretion of carbon dioxide and L-lactic acid through exhalation and perspiration provides olfactory signals to mosquitoes which allow them to find and bite humans; however, mosquito species differ in this regard. This study investigated upwind responses of Anopheles stephensi, mysorensis form, an important malaria vector in Asia, to carbon dioxide and L-lactic acid under laboratory conditions. While a minimal dose of carbon dioxide (90 ppm) activated the mosquitoes, 10 times this amount suppressed them. L-lactic acid alone did not produce a significant effect by itself, but addition of 6 µg/min of L-lactic acid to a range of 90 to 410 ppm carbon dioxide resulted in attraction. The results provide further support for the hypothesis that CO2 plays an important role in the host-seeking behaviour of zoophilic mosquitoes, and suggests that L-lactic acid might play a more critical role than CO2 in the attraction of An. stephensi.

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