1. CDFA Home
  2. Pierce's Disease Control Program
  3. Research Updates

Pierce's Disease
Research Updates

piercesdisease.cdfa.ca.gov

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

AN IMMUNOLOGICAL APPROACH FOR QUANTIFYING PREDATION RATES ON THE GLASSY-WINGED SHARPSHOOTER

  • Author(s): Groves, Russell; Hagler, James; Johnson, Marshall; Morgan, David;
  • Abstract: The gut contents of 376 individual predators were assayed for glassy-winged sharpshooter (GWSS) remains using a multitude of ELISAs designed to detect predation on various GWSS life stages. We found that almost 10% of the predators examined contained GWSS remains in their guts. We recorded 10, 17, and 20 predation events on the GWSS egg, nymph, and adult stages, respectively. Of the predators examined in this study, Collops vittatus (20.6%) and Hippodamia convergens (16.7%) had the highest percentage of individuals positive for GWSS remains. Approximately 10% of five of the other predator species and none of the earwigs tested contained GWSS remains.
  • Publication Date: Nov 2006
  • Journal: 2006 Pierce's Disease Research Symposium

Navigation

Actions

Researcher Login

Sponsors