1a.Objectives (from AD-416):
To develop a push-pull system for asian citrus psyllid management for protection of young citrus plants
1b.Approach (from AD-416):
Investigate visual cues that cause attraction and repellency of psyllids in the laboratory, devise push and pull methods for psyllids and evaluate the methods in field with young citrus plants.
This research relates directly to Objective 2. Detection and attraction: Develop chemical and acoustic detection and attraction systems for pest species and natural enemies: specifically develop trapping systems using floral-derived volatiles to monitor and/or eliminate pest populations and monitor dispersal of augmented parasitoids, detect acoustic signals produced by cryptic/hidden pests for targeted control, and improve detection efficiency through automation.
The asian citrus psyllid is the vector of the most devastating citrus disease worldwide with few effective measures available for surveillance and control of the insects. In this recently initiated project, equipment was acquired and setup for conducting research. In laboratory visual choice assays, there was no difference in preference between male and female psyllids for differently color equal-intensity LEDs. Yellow and green LEDs attracted the most psyllids with low attraction to blue LEDs. The proportion of psyllids responding to LEDs increased during the daylight hours with highest responses mid-day and diminished responses in early morning and late afternoon. This information will be incorporated into the development of an optimized attractions component for field collection of psyllids.