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Poster Session

Larval Control

Poster Session

P-30 - Towards residential control of the eastern tree hole mosquito (Aedes triseriatus) – results of a larval bioassay field trial of Altosid SR20 in a La Crosse endemic area

Wednesday, March 5, 2025
12:15 PM – 1:45 PM AST
Location: Hall A
Abstract: Residential level interventions to reduce La Crosse virus exposure risk are urgently needed. In this study we applied Altosid SR 20 (AI rate: 1 oz/acre; Spray rate: 1 gallon/acre and application speed of 1.5 mph) at an edge habitat to measure both penetration and percent inhibition of emergence for Aedes triseriatus in larval bioassays. Microcosm assays were placed (n=5 per transect) along 4 transects with 4 applications (i.e.,16 replicates total; n=80 microcosms). Each microcosm contained fifteen (15) 2nd instar Ae. triseriatus. Effective emergence inhibition was observed. The results of this study, including percent inhibition, time to event (mortality) analyses, and droplet quantification using water sensitive colorimetric cards will be presented.