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Pierce's Disease
Research Updates

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What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

IDENTIFYING KEY PREDATORS OF THE GLASSY-WINGED SHARPSHOOTER IN A CITRUS ORCHARD

  • Author(s): Daane, Kent; de Le?n, Jesse; Fournier, Valarie; Hagler, James; Akey, David; Blua, Matthew; Costa, Heather;
  • Abstract: Over 1,500 predators were screened for glassy-winged sharpshooter (GWSS) remains using a GWSS egg-specific monoclonal antibody (MAb) and several GWSS-specific genetic markers. Specimens were collected in 2002 and 2003 from a citrus orchard (Riverside, CA) harboring high densities of GWSS. We found that 6.2% of all specimens examined tested positive for GWSS remains. The most frequent predators to test positive included the assassin bug, Zelus renardii (Kolenati) (Hemiptera: Reduviidae) and the spiders Trachelas pacificus Chamberlin and Ivie (Araneae: Corinnidae) and Olios sp. (Araneae: Sparassidae) with 41, 22, and 19% of the specimens testing positive with either ELISA and/or PCR, respectively.
  • Publication Date: Nov 2006
  • Journal: 2006 Pierce's Disease Research Symposium

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