Seasonal monitoring is essential for effective pest management. Few published studies map movement of spotted-wing drosophila (Drosophila suzukii) in crops and none do so in Florida’s blueberry production systems. Growers use monitoring information to target control activities, which reduces costs, toxicant exposure, and environmental loads. We trapped D. suzukii using Scentry® traps and lures at increasing distances from woods edges into blueberry fields throughout the 2018-19 growing seasons. Studies took place at conventional and organic farms. Trap distance from the woods represented our treatments: a) 0 m (woods edge), b) 20 m (field edge), and c) 40 m (within-field). In 2019, blueberries were collected by treatment to measure adult emergence. MANOVA with repeated measures was used to analyze the effects of trap distance and week on adult trap catch and adult emergence. Adult D. suzukii captures were highest in 0 m traps at the conventional site in both years. Treatment-by-week interactions suggest D. suzukii migration from wooded areas into blueberry fields during both seasons. Captures were greatest in 20 m traps at the organic site in 2018, and captures were not different among treatments in 2019. Emergence was not different among treatments in 2019 but was greater in the within-field treatment relative to the field edge at the end of the season. This is the first evidence of D. suzukii seasonal migration in Florida blueberries and supports other studies showing movement into berry crops.
