Cyclolavandulyl butyrate: an attractant for a mealybug parasitoid, Anagyrussawadai (Hymenoptera: Encyrtidae) |
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Authors: | Jun Tabata Mayumi Teshiba Syuntaro Hiradate Takafumi Tsutsumi Nobutaka Shimizu Hajime Sugie |
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Affiliation: | (1) Biodiversity Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba Ibaraki, 305-8604, Japan;(2) Fukuoka Agricultural Research Center, 587 Yoshiki, Chikushino Fukuoka, 818-8549, Japan |
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Abstract: | In this study, we discovered and isolated an attractant for a mealybug-parasitic wasp Anagyrus sawadai from an esterification product prepared with commercialized lavandulol (2-isopropenyl-5-methyl-4-hexen-1-ol) and butyryl chloride. Using gas chromatography-mass spectrometry (GC-MS) and nuclear magnetic resonance spectroscopy, we determined the structure of the compound to be (2,4,4-trimethyl-2-cyclohexenyl)methyl butyrate (cyclolavandulyl butyrate). This is a novel compound as far as we know, although the alcohol moiety has been known as a cyclization product from lavandulol. Cyclolavandulyl butyrate has two enantiomers, and the (−)-isomer, which is suggested to have S configuration, showed higher attractiveness. A potential use for the A. sawadai attractant for mealybug management in agricultural fields is discussed. |
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