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1 April 2000 Field Tests of Environmentally Friendly Malathion Replacements to Suppress Wild Mediterranean Fruit Fly (Diptera: Tephritidae) Populations
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Abstract

This article reports a large-scale field test of two environmentally friendly malathion replacements on wild populations of the Mediterranean fruit fly, Ceratatis capitata (Wiedemann): spinosad, a bacteria-derived toxin, and phloxine B, a red dye with phototoxic properties. The comparison test was conducted on 11 coffee fields infested with wild populations of Mediterranean fruit fly on the Hawaiian island of Kauai with 8-wk protein bait sprays with and without toxicants. To assess effectiveness, adults were trapped and larval infestation levels were evaluated with fruit collections. Malathion was found to be the most effective treatment. However, the two replacements gave significant levels of control, and because they are environmentally safer, should be considered for eradicating incipient populations of this invasive species of fruit fly. Cage tests were also conducted to ensure that the wild flies consumed the bait and to assess how long the bait-toxicant combination remained effective in the field. Although spinosad and phloxine B were found to be effective up to 1 wk, malathion remained effective at least 2 wk.

Steven L. Peck and Grant T. McQuate "Field Tests of Environmentally Friendly Malathion Replacements to Suppress Wild Mediterranean Fruit Fly (Diptera: Tephritidae) Populations," Journal of Economic Entomology 93(2), 280-289, (1 April 2000). https://doi.org/10.1603/0022-0493-93.2.280
Received: 13 September 1999; Accepted: 1 December 1999; Published: 1 April 2000
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