2009 Annual Report
Spinosad Replacement for Organophosphate Male Annihilation Treatments in California. Studies were conducted in Hawaii to quantify attraction and feeding response resulting in mortality of the male oriental fruit fly to a novel male annihilation treatment (MAT) formulation consisting of specialized pheromone and lure application technology (SPLAT) in combination with methyl eugenol (ME) and spinosad (=SPLAT-MAT-ME with spinosad) in comparison with Min-U-Gel ME with naled (Dibrom) currently used in California and Florida. Our approach involved a novel behavioral methodology for evaluation of slow-acting reduced-risk insecticides. Methyl eugenol treatments were weathered for 220.127.116.11, and 8 weeks in California and shipped to Hawaii for bioassays. Our results suggest that spinosad with low contact toxicity, and when mixed with SPLAT-ME offers a reduced-risk alternative for control of oriental fruit fly, without many of the negative effects to humans and non-targets of broad spectrum contact poisons such as naled. SPLAT-MAT-ME with spinosad offers potential for control of males in an area-wide integrated pest management (IPM) system without the need for conventional organophosphates.
Progress is monitored through meetings with cooperator, telephone and email communications, and progress reporting.