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Title: CHEMICAL CONTROL OF GLASSY-WINGED SHARPSHOOTER: ESTABLISHMENT OF BASELINE TOXICITY AND DEVELOPMENT OF MONITORING TECHNIQUES FOR DETECTION OF EARLY RESISTANCE TO INSECTICIDES

Author
item TOSCANO, NICK - UNIV OF CA RIVERSIDE
item PRABHAKER, NILIMA - UNIV OF CA RIVERSIDE
item BYRNE, FRANK - UNIV OF CA RIVERSIDE
item Castle, Steven

Submitted to: CDFA Pierce's Disease Control Program Research Symposium
Publication Type: Proceedings
Publication Acceptance Date: 12/1/2002
Publication Date: 12/30/2002
Citation: N/A

Interpretive Summary:

Technical Abstract: The possibility of resistance development when insecticides are used necessitates the development of an effective resistance-monitoring program that enables early detection of even low-frequency resistance alleles in natural populations. The initial step for monitoring of resistance is through development of appropriate bioassay techniques that can establish baseline t susceptibility data among populations. Our goal for the first year was to study the effectiveness of selected insecticides that represent various chemistries against GWSS and determine regional comparisons of GWSS responses to these insecticides. Simple and suitable bioassay techniques were developed to detect toxicological responses and to establish baseline susceptibility data of GWSS to various insecticides. Three techniques, petri-dish, leaf-dip and systemic bioassays were described in the previous report (Toscano 2001). Evaluation continued during the second season to assess any changes in responses of GWSS to a wide range of chemistry. The present report compares the toxicological responses of GWSS for a period of two years.