BG-Sentinel™ Trap Efficacy As A Component of Proof-Of-Concept For Push–Pull Control Strategy For Dengue Vector Mosquitoes
2017
Salazar, Ferdinand V. | Chareonviriyaphap, Theeraphap | Grieco, John P. | Prabaripai, Atchariya | Polsomboon, Suppaluck | Gimutao, Kaymart A. | Bangs, Michael J. | Achee, Nicole L.
The efficacy of the BG-Sentinel™ (BGS) trap as a “pull” component of a “push–pull” system (PPS) for management of the dengue vector, Aedes aegypti, was evaluated using local households in Pu Tuey, Kanchanaburi, Thailand. The pull component was the concluding phase of a 3-part investigation using a PPS combination spatial repellent (SR) and BGS trap to capture adult vector mosquitoes. Two sentinel households were selected for evaluation of BGS trap efficacy based on the highest pretrial indoor resting densities of Ae. aegypti using Centers for Disease Control and Prevention (CDC) mechanical backpack collections. Potential Ae. aegypti resting sites around the selected houses were identified as possible competing sites that might influence the BGS trap capture efficiency. Results showed that BGS traps were productive in capturing Ae. aegypti females (93.4% of all Aedes collected) in the presence of competing man-made, artificial resting sites. The CDC backpack aspirator collections provided an indirect measure of local Aedes population, although technically not comparable for supporting productivity of BGS traps due to different collection days and households sampled. The predominant competing resting sites were water containers found within 3 m around the outside of sentinel households. The most productive BGS collections between houses differed by location. The most productive period of operation for Ae. aegypti BGS trapping was between 1330 and 1730 h. The BGS trap appears an effective “pull” device in the PPS strategy in natural settings.
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