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首页> 美国卫生研究院文献>Insects >Variations on a Theme: Two Structural Motifs Create Species-Specific Pheromone Channels for Multiple Species of South American Cerambycid Beetles
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Variations on a Theme: Two Structural Motifs Create Species-Specific Pheromone Channels for Multiple Species of South American Cerambycid Beetles

机译：一个主题的变化：两个结构性母体为南美Cerambycid甲虫的多种物种创造了特定物种的信息素通道。

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We describe the identification, synthesis, and field-testing of aggregation-sex pheromones, or likely pheromone candidates, of seven species of South American cerambycid beetles in the subfamily Cerambycinae, of the tribes Eburiini and Neoibidionini. Analyses of extracts of volatiles released by adult males revealed that White produce 11-methyltridecanal, whereas the males of Gounelle, Gounelle, and Napp and Martins produce blends of this compound, along with its analog 10-methyldodecanal. In contrast, males of (Thomson) and (Thomson) produce blends of 10-methyldodecanal and its corresponding alcohol 10-methyldodecanol. The results from field bioassays with synthetic compounds showed that each species was specifically attracted to traps containing their reconstructed pheromone blend. However, was not trapped, possibly due to inhibition by non-natural enantiomers in the racemic test compounds. During the trials for the species, adults of another cerambycid species, (Thomson), were captured in significant numbers in traps baited with 10-methyldodecanol, suggesting that this compound is a pheromone component for this species. This study demonstrates another case of conservation of pheromone structures within South American cerambycid species. It also highlights how blends of closely related structures, differing only in chain length or functional group, make the evolution of species-specific pheromone channels possible.
机译：我们描述了鉴定，合成和实地测试聚集性信息素，或可能的信息素候选者，属于七星瓢虫科亚科中的七种南美cerambycid甲虫，属于部落Eburiini和Neoibidionini。对成年雄性释放的挥发物提取物的分析表明，怀特产生11-甲基海藻醛，而古奈尔，古奈尔，纳普和马丁斯的雄性则产生该化合物及其类似物10-甲基十二碳管的混合物。相反，（Thomson）和（Thomson）的雄性产生10-甲基十二碳烯醛及其相应的醇10-甲基十二烷醇的混合物。使用合成化合物进行现场生物测定的结果表明，每种物种都特别被包含其重构的信息素混合物的诱集装置吸引。但是，未被捕获，可能是由于外消旋测试化合物中非天然对映体的抑制。在对该物种的试验过程中，大量陶醉于另一陶醉动物物种（汤姆森）的诱饵被诱捕到10-甲基十二烷诱饵中，表明该化合物是该物种的信息素成分。这项研究证明了南美cerambycid物种内信息素结构保守的另一种情况。它还强调了仅在链长或官能团上不同的紧密相关结构的融合如何使特定物种信息素通道的进化成为可能。

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