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Video Q&A ViewAttendees 4

Medical, Urban, and Veterinary Entomology

10-Minute Paper

MUVE: Mosquito and Other Fly Vectors Ecology and Behavior On-Demand Presentations

Evaluation of the In2Care Mosquito Trap against Culex quinquefasciatus mosquitoes under semi-field conditions

On-Demand
On-Demand
Culex quinquefasciatus is an important mosquito vector responsible for transmission of arboviruses like Eastern equine encephalitis, St. Louis encephalitis, and West Nile viruses. Due to insecticide resistance documented in Cx. quinquefasciatus populations worldwide, integrated vector management programs may need new strategies to control this species. The In2Care® Mosquito Trap (In2Care Trap), a commercially available trap containing pyriproxyfen (PPF) and Beauveria bassiana spores, has been shown to be effective against skip-ovipositing Aedes aegypti and Ae. albopictus mosquitoes. Even though Cx. quinquefasciatus' oviposition behavior differs from Ae. aegypti and Ae. albopictus, it is frequently found in the same larval habitats. To see if the In2Care Trap could be used for controlling Cx. quinquefasciatus, we assessed the efficacy of the In2Care Trap against locally sourced Cx. quinquefasciatus mosquitoes in a semi-field setting. We found that the In2Care Trap is attractive to gravid Cx. quinquefasciatus females, with a significantly higher percentage of egg rafts laid in the In2Care Trap (34 ± 6%) compared to surrounding flowerpots (17 ± 3%) (P = 0.0156). Adult Cx. quinquefasciatus females successfully autodisseminated PPF to surrounding flowerpots, leading to a significant increase in mosquito emergence inhibition (13 ± 2% for negative control vs. 45 ± 7% for In2Care Trap treatment; P < 0.001). Additionally, adult Cx. quinquefasciatus exposure to Beauveria bassiana spores significantly reduced survivorship (P < 0.001). These results suggest that the In2Care Trap may be effective against Cx. quinquefasicatus; however, field evaluations are needed.