Behavioural and electrophysiological responses of Liothrips jatrophae (Thysanoptera: Phlaeothripidae) to conspecific extracts and some of its identified compounds,Physiological Entomology

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Behavioural and electrophysiological responses of Liothrips jatrophae (Thysanoptera: Phlaeothripidae) to conspecific extracts and some of its identified compounds
Physiological Entomology ( IF 1.6 ) Pub Date : 2021-07-06 , DOI: 10.1111/phen.12367
Johana González‐Orellana ₁ , Guillermo López‐Guillén ₂ , Edi A. Malo ₁ , Arturo Goldarazena _{3,

4} , Leopoldo Cruz‐López ₁

Affiliation

This study investigated the behavioural and electrophysiological responses of the thrips Liothrips jatrophae to conspecific extracts and some of its identified compounds. We integrated four constituents of the insect's chemical communication: identification of the compounds from L. jatrophae extract, behavioural response to extracts and synthetic blends, morphology of the main olfactory receptors (antennae), and electrophysiological response of the main olfactory receptors of the antennae to extracts and to individual synthetic compounds and synthetic blends. Analysis by GC–MS revealed that the L. jatrophae extract contains a mixture of 11 compounds (perillene, tridecane, β-acaridial, tetradecane, pentadecane, heptadecane, heptadecene, dodecyl isobutyrate, tridecyl isobutyrate, tetradecyl isobutyrate and hexadecyl isobutyrate). The major compounds were tridecane, pentadecane, tetradecyl isobutyrate and hexadecyl isobutyrate. When the thrips were exposed to the extracts, they exhibited an escape response, accompanied by other behavioural responses, such as rapid sideways movement and lifting of the abdomen and secretion of a drop at the tip of the abdomen. Morphology and distribution of the L. jatrophae antennal sensilla were examined with a scanning electron microscope (SEM). The antenna consists of a scape, pedicel and six flagella. The microphotographs showed two types of sensilla: basiconica and trichoidea. Single sensillum recording (SSR) showed that the sensilla basiconica located in segment IV of the antenna were the most sensitive to the L. jatrophae extracts and to a synthetic blend, whereas the sensilla trichoidea did not exhibit electrophysiological response.

中文翻译：

Liothrips jatrophae (Thysanoptera: Phlaeothripidae) 对同种提取物及其某些已鉴定化合物的行为和电生理反应

本研究调查了蓟马Liothrips jatrophae对同种提取物及其某些已鉴定化合物的行为和电生理反应。我们整合了昆虫化学通讯的四种成分：鉴定来自L的化合物。麻风树提取物，对提取物和合成混合物的行为反应，主要嗅觉受体（触角）的形态，以及触角的主要嗅觉受体对提取物和单个合成化合物和合成混合物的电生理反应。GC-MS 分析显示L. jatrophae提取物含有 11 种化合物的混合物（紫苏烯、十三烷、β-螨醛、十四烷、十五烷、十七烷、十七碳烯、异丁酸十二烷基酯、异丁酸十三烷基酯、异丁酸十四烷基酯和异丁酸十六烷基酯）。主要化合物是十三烷、十五烷、异丁酸十四烷基酯和异丁酸十六烷基酯。当蓟马暴露于提取物时，它们会表现出逃避反应，并伴有其他行为反应，例如快速侧向运动和腹部抬起以及腹部尖端分泌一滴水。麻风树的形态和分布用扫描电子显微镜（SEM）检查触角感受器。天线由一个花葶、花梗和六个鞭毛组成。显微照片显示了两种感受器：basiconica 和 trichoidea。单感器记录 (SSR) 表明位于天线第四段的感受器 baseonica 对麻风杆菌提取物和合成混合物最敏感，而毛状感受器没有表现出电生理反应。

更新日期：2021-07-06

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