摘要：

California's viticulture and ornamental industries have suffered significant losses since the introduction of (Say), an important vector of the Pierce's disease bacterium. A better understanding of the factors that influence the dispersal of , as well as other native sharpshooters could enhance our ability to institute areawide management programs. Studies were conducted to establish the validity of an immunoglobulin G (IgG) protein marker for sharpshooter dispersal studies, to compare the dispersal of with that of a native sharpshooter Ball, and to develop a better understanding of the factors that influence their dispersal. Field trials showed that the marker remained detectable for at least 19 d and did not affect sharpshooter survival. Four concentrations (0.04, 0.2, 1, and 5 mg/ml) and two different IgG markers (chicken and rabbit) were effective for marking sharpshooters. In mass-mark-recapture studies, ≈95% of the marked insects flew during the releases and the timing of flight initiation was similar for and . Mean wind speeds >3 m swere associated with a decline in flight initiation for both species. Most sharpshooters were trapped at heights below 4.2 m, and based on sex ratio comparisons, traps were equally attractive to males and females. Regression analyses of recapture data and a diffusion model were used to assess and compare sharpshooter dispersal. The majority (95%) of and were recaptured within 90 and 155 m of the release site, respectively.

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