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Electroantennogram responses of Plutella xylostella (L.), to sex pheromone components and host plant volatile semiochemicals
Journal of Applied Entomology ( IF 1.7 ) Pub Date : 2020-03-09 , DOI: 10.1111/jen.12744
Aihua Wu 1 , Xianwei Li 1 , Xizhong Yan 1 , Weili Fan 1 , Chi Hao 1
Affiliation  

The diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Plutellidae), is a notorious insect pest of cruciferous crops worldwide. Attract‐and‐kill strategies to manage the DBM based on insect pheromone and plant volatile semiochemicals have been explored and partially applied in the field. However, little is known about whether the attractant effects of insect pheromone and host plant volatile semiochemicals on insects are affected by insect age or volatile concentrations. Therefore, we examined the electroantennogram (EAG) responses of both DBM males and females varying in age and body size to a range of concentrations of seven host plant volatiles and two main female sex pheromone components. Our results showed that DBM age had no influence on EAG responses to trans‐2‐Hexenal, trans‐2‐Hexenol, Heptanal, cis‐3‐Hexen‐1‐ol and Z11‐16:Ald and significantly influenced the EAG responses to Z11‐16:Ac and three isothiocyanates. Age and sex had interaction effects on EAG responses of DBMs to some tested semiochemicals. DBM females had significantly stronger responses than males to all tested plant volatiles, and values were enhanced with increasing concentrations. Moreover, the degree of enhancement of EAG responses in females was larger than that in males for trans‐2‐Hexenal, trans‐2‐Hexenol, cis‐3‐Hexen‐1‐ol, 2‐Phenylethyl isothiocyanate and Methyl isothiocyanate treatments. Body size seemed to have no influence on EAG responses. Our results might provide a theoretical basis for optimizing attract‐and‐kill strategies for insect pests.

中文翻译:

Plutella xylostella (L.) 对性信息素成分和寄主植物挥发性化学信息素的触角电图反应

小菜蛾 (DBM) 小菜蛾 (Plutella xylostella (L.) (Lepidoptera: Plutellidae)) 是世界范围内十字花科作物的一种臭名昭著的害虫。基于昆虫信息素和植物挥发性化学信息素来管理 DBM 的吸引和杀死策略已被探索并部分应用于该领域。然而,关于昆虫信息素和寄主植物挥发性化学信息素对昆虫的引诱作用是否受昆虫年龄或挥发性浓度的影响知之甚少。因此,我们检查了年龄和体型不同的 DBM 雄性和雌性对七种宿主植物挥发物和两种主要雌性性信息素成分的浓度范围的触角电图 (EAG) 反应。我们的结果表明,DBM 年龄对 EAG 对反式 2-己烯醛、反式 2-己烯醇、庚醛、顺式 3-己烯-1-醇和 Z11-16 的反应没有影响:Ald 和显着影响 EAG 对 Z11-16:Ac 和三种异硫氰酸酯的反应。年龄和性别对 DBMs 对一些测试信息素的 EAG 反应有交互作用。DBM 雌性对所有测试的植物挥发物的反应明显强于雄性,并且值随着浓度的增加而增强。此外,在反式-2-己烯醛、反式-2-己烯醇、顺-3-己烯-1-醇、2-苯基乙基异硫氰酸酯和甲基异硫氰酸酯处理中,雌性EAG反应的增强程度大于雄性。体型似乎对 EAG 反应没有影响。我们的研究结果可能为优化昆虫害虫的诱杀策略提供理论基础。年龄和性别对 DBMs 对一些测试信息素的 EAG 反应有交互作用。DBM 雌性对所有测试的植物挥发物的反应明显强于雄性,并且值随着浓度的增加而增强。此外,在反式-2-己烯醛、反式-2-己烯醇、顺-3-己烯-1-醇、2-苯基乙基异硫氰酸酯和甲基异硫氰酸酯处理中,雌性EAG反应的增强程度大于雄性。体型似乎对 EAG 反应没有影响。我们的研究结果可能为优化昆虫害虫的诱杀策略提供理论基础。年龄和性别对 DBMs 对一些测试信息素的 EAG 反应有交互作用。DBM 雌性对所有测试的植物挥发物的反应明显强于雄性,并且值随着浓度的增加而增强。此外,在反式-2-己烯醛、反式-2-己烯醇、顺-3-己烯-1-醇、2-苯基乙基异硫氰酸酯和甲基异硫氰酸酯处理中,雌性EAG反应的增强程度大于雄性。体型似乎对 EAG 反应没有影响。我们的研究结果可能为优化昆虫害虫的诱杀策略提供理论基础。在反式-2-己烯醛、反式-2-己烯醇、顺-3-己烯-1-醇、2-苯基乙基异硫氰酸酯和甲基异硫氰酸酯处理中,雌性EAG反应的增强程度大于雄性。体型似乎对 EAG 反应没有影响。我们的研究结果可能为优化昆虫害虫的诱杀策略提供理论基础。在反式-2-己烯醛、反式-2-己烯醇、顺-3-己烯-1-醇、2-苯基乙基异硫氰酸酯和甲基异硫氰酸酯处理中,雌性EAG反应的增强程度大于雄性。体型似乎对 EAG 反应没有影响。我们的研究结果可能为优化昆虫害虫的诱杀策略提供理论基础。
更新日期:2020-03-09
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