Flight-Response of Spotted Wing Drosophila to Olfactory Cues from Conspecific Infested and Grey Mold-Infected Grape Berries
Commodity Protection and Quality
2013 Annual Report
1a.Objectives (from AD-416):
Develop an attract & kill tool for controlling and/or monitoring populations of Spotted Wing Drosophila (SWD) in and around table grape production areas.
1b.Approach (from AD-416):
We will estimate the relative attractiveness of SWD-infested berries, grey-mold infected berries, and high-quality berries by quantifying the flight response of SWD to volatile chemical cues in a flight tunnel bioassay. Subsequently, flight response data will be used as a diagnostic endpoint to isolate and identify key chemical attractants released from berries.
This Assistance Type Cooperative Agreement was established to support Objective 1 of the in-house project and is related to controlling insect pests using techniques that reduce the reliance on postharvest methyl bromide fumigation. The spotted wing drosophila (SWD) is a polyphagous insect pest that is of concern to certain countries that import specialty crops from the US. Systems-based approaches to SWD control are an important part of maintaining the export of specialty crops. The goal of this project was to develop lures and traps for SWD to be used in concert with systems-based strategies for SWD control. Research focused on synthetic chemistry, and specifically the development of “controllable” chemistries for creating and degrading linkages between SWD attractants and precursory inactive forms. Results of this research have been used to develop cooperative research and development agreements between industry, University of California researchers, and USDA researchers.