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10-Minute Presentation

Systematics, Evolution, and Biodiversity

10-min: SysEB, Invasive Species, Diagnostics, and Pest Control

Precision pest management: Spatiotemporal modeling of insecticide resistance evolution in Colorado potato beetle

Sunday, November 9, 2025
10:00 AM - 10:12 AM Pacific
Location: Oregon Convention Center, E147-148, OCC
Oral Presentation
Pesticide resistance remains a major concern for potato production, as pests cause considerable damage if they are not managed effectively. New approaches are needed to improve predictions about the emergence of pesticide resistance phenotypes across growing regions. Specifically, there is an opportunity to leverage large scale monitoring data to develop predictive statistical tools that can be used to model how pesticide resistance develops within and among pest populations, to predict how resistance can spread geographically, and to refine management practices in a timelier fashion. We develop statistical analyses that examine abundance trends, and pesticide resistance evolution, of the Colorado potato beetle, Leptinotarsa decemlineata in Wisconsin, to identify important predictors of these variables. Leveraging more than a decade of spatiotemporal data on abundance, genomic variation, and environmental data, we find that we can make reasonable predictions about pest abundance and resistance patterns. The long-term goal of the research is to develop predictive risk maps that identify problematic field populations of the potato beetle, which would benefit producers by targeting management towards these key populations that have a high likelihood of evolving resistance to new methods of control.