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Kauai Adult Mosquito Monitoring

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2020-12-11T00:00:00Z
As part of a larger study looking at the efficacy of the biopesticide VectoMax FG for control of larval Culex quinquefasciatus, USGS and DOFAW personnel monitored adult mosquitoes (Culex quinquefasciatus and Aedes japonicus) along the Kawaikoi Stream during late summer, September through November 2016 and 2017. Ten trap sites were selected across a 1-kilometer grid centered on the intersection of the Alakai Swamp Trail and Kawaikoi Stream, Alakai Wilderness Preserve, Kauai. Traps were located at least 200 meters apart at accessible sites along the stream, valley floor, and adjacent plateau. Both Biogents Sentinel Traps (BGS) and Centers for Disease Control and Prevention (CDC) Gravid Traps (GRV) were operated nightly at each site from 1600 to 0700 hr the following morning. Depending on the weather (heavy rains and high water) and trap reliability (battery and CO2 delivery failures) the number of traps operated per night varied considerably. The data was used to compare the weekly relative abundance of mosquitoes (mosquitoes/trap-night) across the trapping season and following VectoMax FG application.

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