0671 Attraction and mortality of melon flies (Bactrocera cucurbitae) to SPLAT-MAT-Cue-Lure or Melo-Lure with spinosad

Tuesday, December 15, 2009: 8:59 AM
Room 209, Second Floor (Convention Center)
RI. Vargas , USDA-ARS, Pacific Basin Agricultural Research Center, Hilo, HI
Jaime C. Pinero , University of Hawaii-Manoa, Honolulu, HI
Ronald F.L. Mau , University of Hawaii-Manoa, Honolulu, HI
Eric B. Jang , USDA - ARS, Hilo, HI
John D. Stark , Department of Entomology, Washington State University, Puyallup, WA
Luis Gomez , Dow AgroSciences, Indianapolis, IN
Agenor Mafra-Neto , ISCA Technologies, Inc., Riverside, CA
Studies were conducted in Hawaii in 2007 and 2008 to quantify attraction and feeding responses resulting in mortality of male melon fly, Bactrocera cucurbitae (Coquillett), to SPLAT-MAT-cue-lure (C-L) or melo-lure with spinosad in comparison with Min-U-Gel-C-L with naled (Dibrom). Initial attraction studies in Hawaii between cue-lure and melo-lure showed few significant differences. Subsequently only C-L studies were pursued in California. C-L treatments were weathered for 1, 2, 4, and 8 wk in California, USA, and shipped to Hawaii for bioassays. In field tests involving bucket traps to attract and capture wild males, and in attraction/toxicity studies conducted in 1 m3 cages using released males of controlled ages, SPLAT-MAT-C-L with spinosad performed similarly to or outperformed the standard formulation of Min-U-Gel-C-L with naled for material aged for up to 8 wk. In laboratory tests in which individual males were exposed for 5 min to the different C-L treatments, mortality induced by SPLAT-MAT-C-L with spinosad recorded at 24 h did not differ from that caused by Min-U-Gel- C-L with naled at 1, 2, and 4 wk. Spinosad has low contact toxicity, when mixed with SPLAT offers a reduced risk alternative for control of B. cucurbitae, without many of the negative effects to humans and nontargets of broad spectrum contact poisons such as naled.

doi: 10.1603/ICE.2016.42610