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10-Minute Presentation

Plant-Insect Ecosystems

10-min: P-IE, IPM - Horticulture 2

Modeling ambrosia beetle flight phenology in Ohio

Tuesday, November 11, 2025
4:12 PM - 4:24 PM Pacific
Location: Oregon Convention Center, E146, OCC
Oral Presentation
Exotic ambrosia beetle species reach much higher populations than their native counterparts. Although some mechanisms, such as earlier and/or longer flight phenology may be responsible for the successful establishment of exotic ambrosia beetle species, control and management tactics are still being evaluated. This study evaluated flight phenology patterns of ambrosia beetle species in nurseries adjacent to infested woodlots to better understand temperature indicators or initial flight and proportion total captures at specific timeframes. Gompertz and exponential models were evaluated using both Sine-Wave and Rectangular method for calculating degree days. AIC values were used to determine best-fit models and considered both 5C and 10C base temperature thresholds. Sine-Wave method using 10C was the best fit model for most species using an exponential equation and highlighted earlier flight patterns from species such as Xylosandrus germanus and longer lag periods with Anisandrus maiche. These data will help predict beetle flight patterns for different species and when to target control methods.