β-石竹烯对可可粉蚧Helopeltis bakeri Poppius(半翅目:粉蚧科)的引诱作用及其寄主植物挥发物的化学多样性

IF 3.5 Q1 AGRONOMY Frontiers in Agronomy Pub Date : 2023-05-16 DOI:10.3389/fagro.2023.1178558
M. Tavera, M.C. Dela Cruz, Kris Lord T. Santos, D. Amalin, J. Janairo
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引用次数: 0

摘要

可可螟是菲律宾可可的一种主要害虫。它以豆荚为食,造成刺穿伤口,变成坏死性损伤,最终可能导致豆荚流产。目前还没有基于半化学的系统开发用于监测和控制芽孢杆菌。在这里,我们报道了从寄主植物中鉴定出的一种可能的引诱剂。挥发性成分采用固相微萃取(100µm聚二甲基硅氧烷)提取,气相色谱-质谱联用分析。综合丰富度、均匀度和差异度的化学多样性分析表明,6种寄主植物的化学多样性相似,表明化学多样性是影响面包树寄主选择行为的一个因素。挥发物比较表明,所有寄主植物中均含有β-石竹烯。在风洞试验中,含有90µg β-石竹烯的浸渍诱饵对bakeri成虫的引诱效果最好。结果表明,β-石竹烯有潜力作为引诱剂,可用于开发基于kairomona的bakeri诱捕系统,作为可可害虫整体综合管理系统的一部分。
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β-caryophyllene as an attractant for the cacao mirid bug, Helopeltis bakeri Poppius (Hemiptera: Miridae), and chemodiversity of its host plant volatiles
The cacao mirid bug, Helopeltis bakeri, is a major insect pest of cacao in the Philippines. It feeds on pods causing puncture wounds that become necrotic lesions and may lead eventually to pod abortion. There is currently no semiochemical-based system developed for the monitoring and control of H. bakeri. Here, we report a kairomone identified from host plants of H. bakeri as a potential attractant. Volatile components were extracted using solid-phase microextraction (100-µm polydimethylsiloxane) and analyzed by gas chromatography - mass spectrometry. Chemodiversity analysis considering compound richness, evenness, and disparity showed similar phytochemical diversity among the six host plants, suggesting that chemodiversity is a factor in the host selection behavior of H. bakeri. Comparison of volatiles revealed that β-caryophyllene was present in all host plants. Using a wind tunnel, an impregnated lure containing 90 µg β-caryophyllene showed the highest attraction to adult H. bakeri. The results show the potential of β-caryophyllene as attractant that can be used in the development of kairomone-based trapping systems for H. bakeri as part of a holistic integrated pest management system for cacao.
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来源期刊
Frontiers in Agronomy
Frontiers in Agronomy Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
4.80
自引率
0.00%
发文量
123
审稿时长
13 weeks
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