Location: Commodity Protection and Quality
2012 Annual Report
Phase 1, year 1. Perform host trials to demonstrate status in peach, plum, nectarine and apricot for spotted wing drosophila and designate categories of host preference (such as, stage of maturity, commercial export grade or physical condition of the fruits) in stone fruits.
Phase 2, year 2. Design, refine and execute experiments that allow spotted wing drosophila population densities to be traced through chemical and physical processes that are consistent with Western US stone fruit production and distribution to Australian and New Zealand markets.
Phase 3, year 3. Determine the mortality of spotted wing drosophila eggs, larvae, pupae and adults in infested stone fruit, as well as, the phytotoxicological impact that results from Vaporphos phosphine at 3-5 C and index relative to methyl bromide at 15.6 C.
1)host attractiveness via flight response to volatile chemical cues,.
2)rates of successful oviposition (as diagnosed by adult emergence) by a single SWD female exposed to representative peaches from each stage of maturity,.
3)rates of successful oviposition (as diagnosed by adult emergence) from a population of SWD females exposed separately to peaches from each stage of maturity, and.
4)degree of maturation-specific nutritional quality assessment arising from developmental rates and average pupae size. A field study will begin June 2012 using an orchard of Elegant Lady yellow peaches located at University of California Kearney Agricultural Research and Extension Center, Parlier, California. The experiment will be repeated later this summer using Summer Flame yellow peaches from a commercial orchard located in Fresno County, California.