In this paper, we describe the epidemiology of glassy-winged sharpshooter (GWSS) vectored Pierce's Disease (PD) in the table grape industry of the Coachella Valley. This area serves as a model system for study, and over the past 2 years we have documented increases in the numbers of GWSS. We also have described the distribution of Xylella fastidiosa within infected vines and the incidence of PD-infected vines within fields and throughout the Valley. Data from this multi-tiered approach is being used to model PD spread (see paper by Krell et al.). In addition, information from our work can be used to design a GWSS-density based strategy to reduce vectors and prevent the spread of PD.
Species 1: Homoptera Cicadellidae Homalodisca coagulata (glassy-winged sharpshooter)
Species 2: Xanthomonadales Xanthomonadaceae Xylella fastidiosa (Pierce's disease)
Keywords: plant disease epidemiology, geographic information system
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