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ARS Home » Pacific West Area » Maricopa, Arizona » U.S. Arid Land Agricultural Research Center » Pest Management and Biocontrol Research » Research » Publications at this Location » Publication #201332

Title: Identifying key predators of the glassy-winged sharpshooter in a citrus orchard

Author
item FOURNIER, VALERIE
item Hagler, James
item DAANE, KENT
item De Leon, Jesus

Submitted to: CDFA Pierce's Disease Control Program Research Symposium
Publication Type: Proceedings
Publication Acceptance Date: 11/27/2006
Publication Date: 11/27/2006
Citation: Fournier, V., Hagler, J.R., Daane, K., De Leon, J.H. 2006. Identifying key predators of the glassy-winged sharpshooter in a citrus orchard. CDFA Pierce's Disease Control Program Research Symposium, Nov 27-29, 2006, San Diego, CA, pp. 64-66.

Interpretive Summary: The gut contents of 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 (e.g., a PCR assay). 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 an assassin bug species and two species of spiders with 41, 22, and 19% of the specimens testing positive with either ELISA and/or PCR, respectively.

Technical 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.