Thrips hawaiiensis is a common thrips pest of various plant flowers with host preference. Plant volatiles provide important information for host-searching in insects. We examined the behavioral responses of T. hawaiiensis adults to the floral volatiles of Gardenia jasminoides Ellis, Gerbera jamesonii Bolus, Paeonia lactiflora Pallas, and Rosa chinensis Jacq. in a Y-tube olfactometer. T. hawaiiensis adults showed significantly different preferences to these four-flower plants, with the ranking of G. jasminoides > G. jamesonii > P. lactiflora ≥ R. chinensis. Further, 29 components were identified in the volatile profiles of G. jasminoides, and (Z)-3-hexenyl tiglate (14.38 %), linalool (27.45 %), and (E3,E7)-4,8,12-trimethyltrideca-1,3,7,11-tetraene (24.67 %) were the most abundant. Six-arm olfactometer bioassays showed that T. hawaiiensis had significant positive responses to (Z)-3-hexenyl tiglate, linalool, and (E3,E7)-4,8,12-trimethyltrideca-1,3,7,11-tetraene tested at various concentrations, with the most attractive ones being 10⁻³ μL/μL, 10⁻² μL/μL and 100 μg/μL for each compound, respectively. In pairing of these three compounds at their optimal concentrations, T. hawaiiensis showed the preference ranking of (Z)-3-hexenyl tiglate > linalool > (E3,E7)-4,8,12-trimethyltrideca-1,3,7,11-tetraene. Large numbers of T. hawaiiensis have been observed on G. jasminoides flowers in the field, which might be caused by the high attraction of this pest to G. jasminoides floral volatiles shown in the present study. Our findings shed light on the olfactory cues routing host plant searching behavior in T. hawaiiensis, providing important information on how T. hawaiiensis targets particular host plants. The high attractiveness of the main compounds (e.g., linalool, (E3,E7)-4,8,12-trimethyltrideca-1,3,7,11-tetraene, particular (Z)-3-hexenyl tiglate) identified from volatiles of G. jasminoides flowers may be exploited further to develop novel monitoring and control tools (e.g., lure and kill strategies) against this flower-inhabiting thrips pest.

中文翻译：

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夏威夷蓟马（Thysanoptera：蓟马）对从from子茉莉（Gen子）鉴定的挥发性化合物的行为响应。

夏威夷蓟马是寄主偏爱的多种植物花卉的常见蓟马害虫。植物挥发物为昆虫宿主搜索提供重要信息。我们研究的行为反应T. hawaiiensis成年人的花卉挥发栀子埃利斯，非洲菊丸，芍药帕拉斯和月季黄灯笼。在Y型管嗅觉仪中。T. hawaiiensis成人表现出显著不同的喜好，这些四花植物，与排名栀子花> G. 非洲菊>芍药≥月季。此外，在茉莉G.，和（Z）-3-己烯基钛酸酯（14.38％），芳樟醇（27.45％）和（E3，E7）-4,8,12-三甲基三苯胺- 1,3,7,11-四烯（24.67％）是最丰富的。六臂嗅觉仪生物测定法显示夏威夷T.对（Z）-3-己烯基tiglate，芳樟醇和（E3，E7）-4,8,12-trimethyltrideca-1,3,7,11-丁烯具有显着的阳性反应在各种浓度下测试，以最有吸引力的那些为10 ^-3 μL/μL，10 ^-2分别μL/μL和100μg/μL每种化合物。在这三种化合物的最佳浓度配对中，夏威夷T.表现出（Z）-3-己烯基tiglate>芳樟醇>（E3，E7）-4,8,12-三甲基三苯甲基-1,3,7,11-四烯的优先顺序。在田间的茉莉花上已观察到大量的夏威夷丁香花，这可能是由于该害虫对茉莉花花卉挥发物的高吸引力所致。我们的发现揭示了嗅觉线索，该信号提示了夏威夷海藻的搜寻行为，为夏威夷海藻如何针对特定寄主植物提供了重要信息。从以下化合物的挥发物中鉴定出的主要化合物（例如，芳樟醇，（E3，E7）-4,8,12-三甲基三苯乙-1,3,7,11-四烯，特别是（Z）-3-己烯基tiglate）具有很高的吸引力。茉莉花（G. jasminoides）的花可以进一步开发，以开发出针对这种居住花蓟马的害虫的新型监视和控制工具（例如，诱引和杀死策略）。