Ishida Tatsuaki, Enomoto Hiroshi, Nishida Ritsuo
Naha Plant Protection Station, MAFF, Okinawa, 900-0001, Japan.
J Chem Ecol. 2008 Dec;34(12):1532-5. doi: 10.1007/s10886-008-9562-8. Epub 2008 Nov 19.
alpha-Ionone, alpha-ionol, and their mixtures with phenolic volatiles act as potential male lures for the solanaceous fruit fly Bactrocera latifrons (Hendel). However, the attractiveness of these compounds is not as strong as that of other well-known tephritid male lures, such as methyl eugenol for Bactrocera dorsalis. Isophorone and isophorol, which have a partial skeletal structure of alpha-ionone/alpha-ionol (i.e., trimethylcyclohexene), were attractive to B. latifrons males, and their mixtures with alpha-ionol exhibited stronger activity than any of the individual compounds. We also tested 3-oxo-alpha-ionone, 3-oxo-alpha-ionol, 3-hydroxy-alpha-ionone, and 3-hydroxy-alpha-ionol, hybrid compounds between isophorone/isophorol and alpha-ionone/alpha-ionol. 3-Oxo-alpha-ionone and 3-oxo-alpha-ionol were active both as attractants and phagostimulants for males. The results suggest that the introduction of an oxygen atom at the 3-position of the alpha-ionone/alpha-ionol molecule optimizes the specific chemosensory responses in B. latifrons males.
α-紫罗兰酮、α-紫罗兰醇及其与酚类挥发物的混合物可作为茄实蝇（Bactrocera latifrons (Hendel)）潜在的雄性引诱剂。然而，这些化合物的吸引力不如其他著名的实蝇雄性引诱剂，如甲基丁香酚对桔小实蝇（Bactrocera dorsalis）的吸引力。异佛尔酮和异佛尔醇具有α-紫罗兰酮/α-紫罗兰醇的部分骨架结构（即三甲基环己烯），对茄实蝇雄性具有吸引力，它们与α-紫罗兰醇的混合物表现出比任何单一化合物更强的活性。我们还测试了3-氧代-α-紫罗兰酮、3-氧代-α-紫罗兰醇、3-羟基-α-紫罗兰酮和3-羟基-α-紫罗兰醇，它们是异佛尔酮/异佛尔醇与α-紫罗兰酮/α-紫罗兰醇之间的杂合化合物。3-氧代-α-紫罗兰酮和3-氧代-α-紫罗兰醇对雄性既是引诱剂又是摄食刺激剂。结果表明，在α-紫罗兰酮/α-紫罗兰醇分子的3位引入氧原子可优化茄实蝇雄性的特定化学感应反应。
