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Member Symposium

Ecology, Epidemiology, and Management of Whiteflies and Whitefly-transmitted Viruses in the United States

7: Do generalist predators contribute meaningfully to silver whitefly, Bemisia tabaci, suppression in the United States? Evidence and implications

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Presenting Author(s)

AK

Arash Kheirodin

University of Georgia
Tifton, Georgia

Co-Author(s)

Michael D. Toews, n/a

Department of Entomology, University of Georgia
Tifton, Georgia
PR

Phillip Roberts

University Of Georgia
Tifton, Georgia
Jason M. Schmidt

University of Georgia
Tifton, Georgia

Whiteflies(Bemisia tabaci) are global pests in both agronomic and vegetable crops. Worldwide, B. tabaci management relies predominantly on insecticide applications. Given the evolution of resistance in B. tabaci to various insecticides, the use of alternative management approaches is inevitable. Several predators naturally occurring in agricultural fields can suppress populations of B. tabaci under economic thresholds in some systems. To better understand the roles of predators in biological control of B. tabaci, we reviewed recent studies conducted over the past 20 years in the United States. We conclude that at up to 30 species feed on whiteflies, and at least nine common generalist predators significantly contribute to whitefly control. Our review suggests many predators contribute to whitefly biological control, and careful monitoring of populations of whiteflies and predators combined with the use of selective insecticides could result in the sustainable management of B. tabaci in the US agroecosystem.