Wednesday, 29 October 2003
D0491

This presentation is part of : Display Presentations, Section B. Physiology, Biochemistry, Toxicology, and Molecular Biology

Toxicity of spinosad and fipronil to teprhitid fruit flies and their parasitoids

John D. Stark1, Roger I. Vargas2, Neil Miller2, and Russell Ijima2. (1) Washington State Univ, 7612 Pioneer Way E, Puyallup, WA, (2) U.S. Pacific Basin Agricultural Research Center, P.O. Box 4459, Hilo, HI

The feeding toxicity of the natural insecticide, Spinosad and fipronil in Provesta protein bait was evaluated for three economically important fruit fly species, the Mediterranean fruit fly, Ceratitis capitata, the melon fly, Dacus cucurbitae and the oriental fruit fly, Bactrocera dorsalis. Provesta bait containing Spinosad and fipronil was also evaluated against two parasitoids of Tephritid fruit flies, Fopius arisanus (Sonan) and Pysttalia flethceri (Silvestri). These parasitoids would not feed on the bait, so a contact toxicity test was conducted. Additionally, fipronil was evaluated as a soil insecticide for control of adult tephritid emergence. Both of these products appear to be promising controls for fruit flies that are less damagging to biocontrols than organophosphates.

Species 1: Diptera Tephritidae Bactrocera dorsalis (Oriental fruit fly)
Species 2: Diptera Tephritidae Ceratitis capitata (Mediterranean fruit fly)
Species 3: Diptera Tephritidae Bactrocera cucurbitae (melon fly)
Keywords: spinosad, fipronil

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