The mosquito control potential of the silicone-based monomolecular film Aquatain® Mosquito Formula (AMF) was investigated in field tests against the backyard mosquitoes Aedes notoscriptus and Culex quinquefasciatus. Plastic tubs, with and without emergent aquatic vegetation (Cyperus alternifolius), were sampled weekly for 2 wk prior to an application of Aquatain and up to 6 wk postapplication. The mean abundance of mosquito larvae and pupae was compared between pre- and postapplication periods as well as between treatment and control tubs. There was a significant reduction in the abundance of immature stages of both Ae. notoscriptus and Cx. quinquefasciatus within 48 h of application, and the mean weekly abundance of larvae of both species was significantly lower in treatment tubs compared with control tubs for up to 6 wk postapplication. Egg rafts, larvae, and pupae were not detected in treatment tubs until 5 wk postapplication. The results indicate that AMF holds great potential for mosquito control in backyard habitats.
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