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Chemoecological Study on the Semiochemicals Controlling Behavior of Tephritid Fruit Flies

控制实蝇行为的化学生态学研究

基本信息

批准号：
08660056
负责人：
NISHIDA Ritsuo
金额：
$ 1.54万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08660056/
关键词：
Fruit fly Bactrocera phenyl propanoid attractant pheromone flower Chemical Ecology mating behavior ウリミバエ

项目摘要

Males of tephritid fruit fly species show strong affinity to specific chemicals produced by plants. The oriental fruit fly, Bactrocera dorsalis(and several within its complex species), are strongly attracted to methyl eugenol and some related phenylpropanoids often found as flower fragrances or plant constituents. Males that fed on the attractants selectively converted the compounds into female-attracting pheromone and stored them in the rectal glands. Males scented with the phenylpropanoids were more successful in mating than unscented males, indicating the advantage of acquiring the compound (s) in mating success. Pharmacophagous acquisition of phenylpropanoids by B.dorsalis seems to have evolved within the context of sexual selection, particularly female preference for males "scented" with chemicals derived from plants.On the other hand, alpha-Copaene, a potent attractant for males of Mediterranean fruit fly, Ceratitis capitata, is found as a minor component in the essential oils of various plant species including its major hosts such as orange, guava and mango. Despite such specific attraction, the male flies never feed on the intact compound and hence the biological significance of alpha-copaene remains unknown. In laboratory tests, lek-like behavior of C.capitata was induced artificially using a plastic leaf model treated with(+)-alpha-copaene. It was also found that alpha-copaene affected virgin females provoking 'pseudomale'courtship behavior in the short-range bioassay. Mating occurred exclusively on the artificial leaves treated with alpha-copaene, suggesting the compound serves potentially as one of the chemical cues to facilitate orientation of the flies to the rendezvous site in their host habitat.

雄性实蝇对植物产生的特定化学物质有很强的亲和力。东方实蝇（Bactrocera dorsalis）（及其复杂物种中的几种）强烈地被甲基丁香酚和一些通常作为花香或植物成分发现的相关苯丙素类吸引。以引诱剂为食的雄性选择性地将化合物转化为吸引雌性的信息素，并将其储存在直肠腺中。散发苯丙素类气味的雄性比不散发气味的雄性交配更成功，表明获得化合物在交配成功方面的优势。B.dorsalis对苯丙素类化合物的食药性获取似乎是在性选择的背景下进化的，特别是雌性偏好雄性“散发”来自植物的化学物质。另一方面，α-Copaene，一种对地中海果蝇（Ceratitis capitata）雄性的有效引诱剂，被发现是各种植物物种精油的次要成分，包括其主要宿主，如橙子，番石榴和芒果。尽管有这种特殊的吸引力，雄蝇从不以完整的化合物为食，因此α-柯帕烯的生物学意义仍然未知。在实验室试验中，使用（+）-α-可巴烯处理的塑料叶模型人工诱导了黄花菜的lek样行为。在短程生物测定中还发现，α-可巴烯影响处女雌性，引起“假雄性”求偶行为。交配只发生在用α-可巴烯处理的人造叶子上，这表明该化合物可能作为一种化学线索，以促进苍蝇在其宿主栖息地的会合点的方向。