title: Polyamines in brown rice vinegar function as potent attractants for the spotted wing drosophila.
abstract: Vinegar produced by acetic acid bacteria is used as an attractant for fruit flies. Apple cider vinegar (ACV) and brown rice vinegar (BRV) are used as lures to detect Drosophila suzukii (also known as the spotted wing drosophila [SWD], a newly emerging invasive pest of soft-skinned fruits) and to capture Drosophila melanogaster, respectively. In the present study, we evaluated the attractiveness of BRV and ACV to SWD in laboratory trapping experiments using an upturned microcentrifuge tube with a pipette tip as a trap. We transferred SWD (approximately 20, 7-10 days old) to a glass vial containing a trap baited with BRV or ACV and counted the captured flies. BRV attracted more flies (52.88 ± 9.75%) than ACV (35.78 ± 7.47%) in 6 h. Based on high-performance liquid chromatography, we found that BRV contained greater amounts of putrescine (12.36 ± 0.44 μM) and spermidine (35.08 ± 4.34 μM) than ACV (putrescine, 0.31 ± 0.067 μM; spermidine, not detected). The attractiveness of ACV supplemented with putrescine (12 μM) and spermidine (35 μM) (68.56 ± 4.69%) was significantly higher than that of ACV, indicating that the enhanced attractiveness of BRV to SWD was accomplished by the additive effects of polyamines and other known attractive volatiles, such as acetic acid and acetoin. BRV is expected to be a powerful tool for the efficient management of SWD.
authors: Division of Bioscience Products, Marukan Vinegar Co. Ltd., 5-6 Koyo-cho West, Higashinada-ku, Kobe, Hyogo 658-0033, Japan; Institute of Applied Microbiology, Marukan Vinegar Co. Ltd., 5-6 Koyo-cho West, Higashinada-ku, Kobe, Hyogo 658-0033, Japan.
authors: Naoki
authors: N
authors: Akasaka
authors: Department of Bioscience, Graduate School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan.
authors: Haruka
authors: H
authors: Higashikubo
authors: Department of Bioscience, Graduate School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan.
authors: Yuri
authors: Y
authors: Ishii
authors: Division of Bioscience Products, Marukan Vinegar Co. Ltd., 5-6 Koyo-cho West, Higashinada-ku, Kobe, Hyogo 658-0033, Japan; Institute of Applied Microbiology, Marukan Vinegar Co. Ltd., 5-6 Koyo-cho West, Higashinada-ku, Kobe, Hyogo 658-0033, Japan.
authors: Hisao
authors: H
authors: Sakoda
authors: Department of Bioscience, Graduate School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan; Research Center for Intelligent Bio-Materials, Graduate School of Science and Technology, Kwansei-Gakuin University, Sanda, Hyogo 669-1337, Japan. Electronic address: fujiwara-s@kwansei.ac.jp.
authors: Shinsuke
authors: S
authors: Fujiwara
mesh_terms: D019342:Acetic Acid / Q000737:chemistry*; D000818:Animals; D004305:Dose-Response Relationship, Drug; D004330:Drosophila / Q000187:drug effects*; D007300:Insect Control; D012275:Oryza / Q000737:chemistry*; D011073:Polyamines / Q000494:pharmacology*
chemical_list: D011073:Polyamines; D019342:Acetic Acid
keywords: Acetic acid bacterium; Apple cider vinegar; Brown rice vinegar; Drosophila suzukii; Polyamines; Spotted wing drosophila