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SIT/IIT

SIT/IIT

SIT/IIT

218 - Advancing Aedes Control: Year Two of the SIT Program in the West Valley region of Southern California

Thursday, March 26, 2026
9:10 AM - 9:20 AM PDT
Location: B116
Abstract: The Sterile Insect Technique (SIT) offers a species-specific, environmentally friendly approach for suppressing invasive Aedes aegypti populations responsible for various arboviral diseases. Building on promising outcomes from the first full year of implementation in 2024, the Year 2 SIT program in the West Valley Mosquito and Vector Control District of southern California focused on expanding operational scale, improving release efficiency, and strengthening impact assessment. Sterile males were produced under insectary conditions with optimized adult longevity and mating competitiveness. Between 8,000 and 15,000 sterile males were released biweekly at selected Aedes hotspots from April to November 2025. Mosquito population dynamics were monitored using BG-2 Sentinel traps, and surveillance data were analyzed to evaluate population density before and after SIT applications. Year 2 results provide valuable evidence in supporting the scalability of targeted SIT operation and its integration into broader vector management programs to control invasive Aedes mosquitoes in California.