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首页> 外文期刊>Journal of Chemical Ecology: Official Journal of the International Society of Chemical Ecology >Electrophysiologically-Active Maize Volatiles Attract Gravid Female European Corn Borer, Ostrinia nubilalis
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Electrophysiologically-Active Maize Volatiles Attract Gravid Female European Corn Borer, Ostrinia nubilalis

机译：具有电生理活性的玉米挥发物吸引雌性欧洲玉米Bor雌性玉米Ost

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摘要

The European corn borer (ECB) is an important pest of maize in the northern hemisphere, but no reliable techniques exist for monitoring females during their reproductive period. In this study, we aimed to identify host-plant volatiles used by gravid Z-strain females in search for oviposition sites. Headspace of maize plants, to which gravid females orientated in a wind tunnel, was collected, and physiologically-active components were identified by using gas chromatography (GC) coupled with electroantennographic detection followed by GC-mass spectrometry. The antennae of female moths consistently responded to two maize volatiles, nonanal and decanal. Although these compounds are individually not characteristic for maize, a synthetic mix in a ratio found in maize headspace, 1:2.4 at 1 mu g mu l(-1) induced source contact and landing responses similar to maize plants in the wind tunnel. However, fewer females took flight in response to the mix, and those that took flight did so with an increased latency. To our knowledge, this is the first blend of host-plant volatiles that has been found to be physiologically active and to be able to induce attraction of gravid ECB females under laboratory conditions. Future tests will evaluate the attractiveness of the blend to the E-strain of ECB, the attractiveness of the blend in the field, and its potential in monitoring ECB populations.
机译：欧洲玉米bore（ECB）是北半球的重要玉米害虫，但目前尚没有可靠的技术来监测雌性繁殖期的雌性。在这项研究中，我们旨在确定妊娠Z株雌性用于寻找产卵部位的宿主植物挥发物。收集在风洞中定向着雌性雌蕊的玉米植株的顶空，并通过使用气相色谱（GC）结合电造影，然后进行GC质谱分析来鉴定生理活性成分。雌蛾的触角始终对两种玉米挥发物，壬醛和de醛有反应。尽管这些化合物不是玉米的特征，但在玉米顶空发现的比例为1：2.4的合成混合物，在1μgmul（-1）下引起的源接触和着陆响应类似于风洞中的玉米植株。但是，响应混合飞行的女性人数减少了，而乘坐飞机的女性则增加了等待时间。据我们所知，这是宿主植物挥发物的第一种混合物，已发现它们具有生理活性，并能够在实验室条件下吸引妊娠ECB雌性。未来的测试将评估混合物对ECB E菌株的吸引力，混合物在野外的吸引力以及其在监测ECB种群中的潜力。

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