1a. Objectives (from AD-416):
We will: (1) isolate and identify attractive olfactory stimuli associated with host- and mate-finding for adult plum curculio using gas chromatography coupled with electroantennogram detection (GC-EAD) and mass spectrometry (MS); (2) develop effective deployment strategies for newly identified olfactory stimuli to manipulate host- and mate-finding behavior and promote aggregation of the plum curculio within commercial apple orchards.
1b. Approach (from AD-416):
We will isolate and identify attractive olfactory stimuli for adult plum curculio, Conotrachelus nenuphar (Herbst). This information will be used by both parties to develop a multi-lifestage management strategy for the plum curculio. Specialty Crops Research Initiative.
3. Progress Report:
The plum curculio is a native and key destructive pest of many wild and cultivated tree fruits in eastern North America. It was long controlled by organophosphate insecticides, but their use was restricted by implementation of the Food Quality Protection Act in 1996. There are no useful semiochemicals available to manipulate plum curculio behavior for monitoring or mating disruption. We identified a potential new volatile pheromone component produced by males. Optimal conditions for collecting the pheromone are still under investigation.