1a. Objectives (from AD-416):
Identify chemical attractants from wine and vinegar to develop a lure for spotted wing drosophila.
1b. Approach (from AD-416):
Chemical analysis of volatiles of attractive baits, isolation and identification of chemicals that are attractive to the fly, and field testing of chemical combinations in controlled release formulations as a trap lure.
3. Progress Report:
The work summarized in this progress report relates to objective number 3 in the Project Plan for 001-00D: 3. Discover and develop chemical attractants for codling moth, fruit flies, pear psylla, and other insect pests of temperate tree fruits and their natural enemies. A series of field experiments determined that several chemicals from wine and vinegar odor that are internally active are deterrent to the spotted wing drosophila. These deterrent compounds were then removed from the chemical blend tested developed and reported in 2012, and were field tested in Mississippi and Oregon. The results show a significant improvement in the power of the lure for the fly, which is now down to four compounds. Subsequent studies focused on optimizing the amounts of the chemicals used in the lure, and the development of a less expensive means of providing controlled release of the chemical attractant for use in traps. At this time, we have a controlled release dispenser for two of the four compounds that provides optimum amounts of the chemicals.