Behavioural responses of Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), a generalist, cell sap‐feeding insect species with piercing‐sucking mouthparts, after continuous exposure to two deterrent secondary plant compounds are investigated. We compared in choice assays on bean leaf discs, the settling, feeding, and oviposition preferences of F. occidentalis females that had no experience with the two fatty acid derivatives methyl jasmonate and cis‐jasmone before testing (naïve thrips) vs. females that had been exposed to the deterrent compounds before testing (experienced thrips). The thrips were exposed to the deterrents at low or high concentrations for varied time periods and subsequently tested on bean leaf discs treated with the respective deterrent at either a low or a high concentration. Frankliniella occidentalis females avoided settling on the deterrent‐treated bean leaf discs for an observation period of 6 h, independent of their previous experience. Our results demonstrate that feeding and oviposition deterrence of the jasmonates to the thrips were not altered by continuous exposure of the thrips to the jasmonates. Habituation was not induced, neither by exposure to the low concentration of the deterrents nor by exposure to the high concentration. These results indicate that the risk of habituation to two volatile deterrent compounds after repeated exposure is not evident in F. occidentalis. This makes the two compounds potential candidates to be integrated in pest management strategies.

中文翻译：

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持续暴露于威慑茉莉酮和茉莉酸甲酯不会改变 Frankliniella occidentalis 的行为反应

研究了 Frankliniella occidentalis (Pergande)（缨翅目：Thripidae），一种具有刺吸式口器的多面手，以细胞汁液为食的昆虫物种，在连续暴露于两种具有威慑力的次生植物化合物后的行为反应。我们在豆叶圆盘的选择试验中比较了在测试前没有使用过两种脂肪酸衍生物茉莉酸甲酯和顺式茉莉酮的 F. occidentalis 雌性（幼稚蓟马）与使用过两种脂肪酸衍生物的雌性的沉降、摄食和产卵偏好。在测试前接触过威慑化合物（经历过蓟马）。蓟马在不同的时间段暴露于低浓度或高浓度的威慑剂，随后在用低浓度或高浓度的相应威慑剂处理的豆叶盘上进行测试。Frankliniella occidentalis 雌性在 6 小时的观察期内避免在经过威慑剂处理的豆叶盘上定居，独立于他们以前的经验。我们的结果表明，茉莉花对蓟马的摄食和产卵威慑作用不会因蓟马持续暴露于茉莉花而改变。无论是暴露于低浓度的威慑物还是暴露于高浓度的威慑物，都不会引起习惯化。这些结果表明，在 F. occidentalis 中反复接触后习惯于两种挥发性威慑化合物的风险并不明显。这使得这两种化合物成为被整合到害虫管理策略中的潜在候选者。我们的结果表明，茉莉花对蓟马的摄食和产卵威慑作用不会因蓟马持续暴露于茉莉花而改变。无论是暴露于低浓度的威慑物还是暴露于高浓度的威慑物，都不会引起习惯化。这些结果表明，在 F. occidentalis 中反复接触后习惯于两种挥发性威慑化合物的风险并不明显。这使得这两种化合物成为被整合到害虫管理策略中的潜在候选者。我们的结果表明，茉莉花对蓟马的摄食和产卵威慑作用不会因蓟马持续暴露于茉莉花而改变。无论是暴露于低浓度的威慑物还是暴露于高浓度的威慑物，都不会引起习惯化。这些结果表明，在 F. occidentalis 中反复接触后习惯于两种挥发性威慑化合物的风险并不明显。这使得这两种化合物成为被整合到害虫管理策略中的潜在候选者。这些结果表明，在 F. occidentalis 中反复接触后习惯于两种挥发性威慑化合物的风险并不明显。这使得这两种化合物成为被整合到害虫管理策略中的潜在候选者。这些结果表明，在 F. occidentalis 中反复接触后习惯于两种挥发性威慑化合物的风险并不明显。这使得这两种化合物成为被整合到害虫管理策略中的潜在候选者。