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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

REALIZED LIFETIME PARASITISM OF GLASSY-WINGED SHARPSHOOTER EGG MASSES BY GONATOCERUS ASHMEADI

  • Author(s): Hoddle, Mark; Irvin, Nic; Luck, Robert;
  • Abstract: Oosorption and egg maturation results suggested that Gonatocerus ashmeadi is a pro-synovigenic species and females mature more eggs during their lifetime. In the absence of hosts, oosorption was initiated on day 7, where the number of reabsorbed eggs increased at a rate of 1-4 eggs per day. In the presence of hosts female G. ashmeadi matured 3-27 eggs per day.
  • Publication Date: Nov 2006
  • Journal: 2006 Pierce's Disease Research Symposium

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