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1 May 2008 Host-Seeking and Blood-Feeding Behavior of Aedes albopictus (Diptera: Culicidae) Exposed to Vapors of Geraniol, Citral, Citronellal, Eugenol, or Anisaldehyde
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Abstract
The changes of the host-seeking and blood-feeding behavior of Aedes albopictus (Skuse) (Diptera: Culicidae) surviving in a space containing vapors of the spatial repellents geraniol, eugenol, citral, anisaldehyde, or citronellal were evaluated using an arm-in-cage test and a bioassay of bloodmeals on a shaved mouse. The mosquitoes surviving concentrations of geraniol, citral, eugenol, or anisaldehyde at 0.013, 0.025, 0.050, 0.100, and 0.250 μg/cm3 for 24 and 48 h all showed different degrees of reduction in host-seeking ability. After 48 h of exposure to 0.250 μg/cm3 geraniol, almost 100% of the mosquitoes lost their host-seeking ability. The next most potent spatial repellent, anisaldehyde, stopped host seeking by >85.5%. Citronellal did not result in a significant reduction in the host-seeking ability at any concentration level after either 24 or 48 h of treatment. We also found that reduction of host-seeking ability recovered after various times. The longest recovery time (144 h) was observed for geraniol after 24 h at 0.250 μg/cm3. In the study, geraniol, eugenol, and citral all significantly affected the activation and orientation stages of the blood-feeding behavior. However, only anisaldehyde significantly interrupted the normal blood-feeding of mosquitoes in all stages of behavior. These initial laboratory results clearly showed that anisaldehyde and geraniol could be promising spatial repellents against Ae. albopictus that they could play a major role in new repellent technology.
Huiling Hao, Jianrong Wei, Jianqing Dai and Jiawei Du "Host-Seeking and Blood-Feeding Behavior of Aedes albopictus (Diptera: Culicidae) Exposed to Vapors of Geraniol, Citral, Citronellal, Eugenol, or Anisaldehyde," Journal of Medical Entomology 45(3), (1 May 2008). https://doi.org/10.1603/0022-2585(2008)45[533:HABBOA]2.0.CO;2
Received: 9 January 2007; Accepted: 7 December 2007; Published: 1 May 2008
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