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Quantitative Analysis of Aedes albopictus Movement Behavior Following Sublethal Exposure To Prallethrin
Journal of the American Mosquito Control Association
|January 26, 2018
Summary
Volatilized prallethrin, an ultra-low volume (ULV) mosquito adulticide, did not significantly alter mosquito flight behavior. However, ULV-sprayed prallethrin increased mosquito flight activity, suggesting improved ULV efficacy with enhanced flight stimulants.
Area of Science:
- Entomology
- Environmental Science
- Pest Management
Background:
- Ultra-low volume (ULV) mosquito adulticides utilize pyrethroids like prallethrin.
- Volatilized prallethrin aims to stimulate mosquito flight for enhanced adulticide effectiveness.
- Previous field tests showed no significant impact of volatilized prallethrin on mosquito trap catches.
Purpose of the Study:
- To investigate the behavioral impact of prallethrin on mosquito flight.
- To determine if volatilized prallethrin or ULV-sprayed prallethrin affects mosquito flight behavior.
- To assess the efficacy of prallethrin as a flight stimulant in mosquito control.
Main Methods:
- Laboratory experiments were conducted on adult female Asian tiger mosquitoes (Aedes albopictus).
- Mosquitoes were exposed to untreated control, volatilized prallethrin, or simulated ULV spray of prallethrin.
- Motion-tracking software analyzed mosquito flight behavior in an airstream.
Main Results:
- Volatilized prallethrin did not significantly alter mosquito flight behavior compared to controls.
- ULV-sprayed prallethrin significantly increased flight events, turning frequency, and movement speed.
- Locomotor stimulation in ULV-sprayed mosquitoes suggests increased exposure to adulticide spray clouds.
Conclusions:
- Volatilization alone is insufficient to enhance the field efficacy of ULV adulticides.
- Incorporating more volatile flight stimulants could improve mosquito control with ULV adulticides.
- Prallethrin's behavioral impact is dependent on the application method (volatilization vs. ULV spray).
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