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Environ Entomol

Title:		Effect of Chemical Ratios of a Microbial-Based Feeding Attractant on Trap Catch of Drosophila suzukii (Diptera: Drosophilidae)
Author(s):		Cha DH; Landolt PJ; Adams TB;
Address:		"USDA-ARS, US Pacific Basin Agricultural Research Center, 64 Nowelo St., Hilo, HA 96720. USDA, ARS Temperate Tree Fruit and Vegetable Research Unit, 5230 Konnowac Pass Rd., Wapato, WA 98951. Oregon Department of Agriculture, Salem, OR 97301"
Journal Title:		Environ Entomol
Year:		2017
Volume:		46
Issue:		4
Page Number:		907 - 915
DOI:		10.1093/ee/nvx079
ISSN/ISBN:		1938-2936 (Electronic) 0046-225X (Linking)
Abstract:		"Drosophila suzukii Matsumura, spotted wing drosophila, can be trapped with a feeding attractant based on wine and vinegar volatiles and consisting of acetic acid, ethanol, acetoin, and methionol. Using that four-component blend, we found that the catch of spotted wing drosophila increased with increases in the release rate of acetoin (from 0.5 mg/d to 34 mg/d) from polyethylene sachet dispensers, and with increases in the concentrations of acetic acid (from 0.25% to 4%) or ethanol (from 0.08% to 2%) when dispensed in the trap drowning solution. However, we saw no increase in spotted wing drosophila trapped with increase of the methionol release rate from 0.4 mg/d to 4.9 mg/d or from 0.19 mg/d to 0.8 mg/d, from sachets. A new formulation based on optimized amounts of these four chemicals yielded a doubling of spotted wing drosophila trapped compared to a previously reported formulation. Further field testing confirmed that the simultaneous increases in the release rate of acetoin from a dispenser and the amount of acetic acid in the trap drowning solution provided the increased spotted wing drosophila trap response to the new formulation. These findings provide a practical means to improve the power of this lure to detect and monitor D. suzukii"
Keywords:		"Acetic Acid/pharmacology Acetoin/pharmacology Animals *Chemotaxis Dose-Response Relationship, Drug Drosophila/*drug effects/physiology Ethanol/pharmacology Female *Insect Control Male Pheromones/*pharmacology Propanols/pharmacology Sulfides/pharmacology D;"
Notes:		"MedlineCha, Dong H Landolt, Peter J Adams, Todd B eng Research Support, Non-U.S. Gov't England 2017/05/23 Environ Entomol. 2017 Aug 1; 46(4):907-915. doi: 10.1093/ee/nvx079"