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1 June 2008 Evaluation of SPLAT with Spinosad and Methyl Eugenol or Cue-Lure for “Attract-and-Kill” of Oriental and Melon Fruit Flies (Diptera: Tephritidae) in Hawaii
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Abstract

Specialized Pheromone and Lure Application Technology (SPLAT) methyl eugenol (ME) and cue-lure (C-L) “attract-and-kill” sprayable formulations containing spinosad were compared with other formulations under Hawaiian weather conditions against oriental fruit fly, Bactrocera dorsalis (Hendel), and melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae), respectively. Field tests were conducted with three different dispensers (Min-U-Gel, Acti-Gel, and SPLAT) and two different insecticides (naled and spinosad). SPLAT ME with spinosad was equal in performance to the standard Min-U-Gel ME with naled formulation up to 12 wk. SPLAT C-L with spinosad was equal in performance to the standard Min-U-Gel C-L with naled formulation during weeks 7 to12, but not during weeks 1–6. In subsequent comparative trials, SPLAT ME spinosad compared favorably with the current standard of Min-U-Gel ME naled for up to 6 wk, and it was superior from weeks 7 to 12 in two separate tests conducted in a papaya (Carica papaya L.) orchard and a guava (Psidium guajava L.) orchard, respectively. In outdoor paired weathering tests (fresh versus weathered), C-L dispensers (SPLAT spinosad, SPLAT naled, and Min-U-Gel naled) were effective up to 70 d. Weathered ME dispensers with SPLAT spinosad compared favorably with SPLAT naled and Min-U-Gel naled, and they were equal to fresh dispensers for 21–28 d, depending on location. Our current studies indicate that SPLAT ME and SPLAT C-L sprayable attract-and-kill dispensers containing spinosad are a promising substitute for current liquid organophosphate insecticide formulations used for areawide suppression of B. dorsalis and B. cucurbitae in Hawaii.

Roger I. Vargas, John D. Stark, Mark Hertlein, Agenor Mafra Neto, Reginald Coler, and Jaime C. Piñero "Evaluation of SPLAT with Spinosad and Methyl Eugenol or Cue-Lure for “Attract-and-Kill” of Oriental and Melon Fruit Flies (Diptera: Tephritidae) in Hawaii," Journal of Economic Entomology 101(3), 759-768, (1 June 2008). https://doi.org/10.1603/0022-0493(2008)101[759:EOSWSA]2.0.CO;2
Received: 23 September 2007; Accepted: 9 February 2008; Published: 1 June 2008
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