Experience-induced habituation and preference towards non-host plant odors in ovipositing females of a moth
Experience-induced habituation and preference towards non-host plant odors in ovipositing females of a moth
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产卵雌蛾的经验诱导的习惯和对非寄主植物气味的偏好
DOI：
10.1007/s10886-008-9433-3
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发表时间：
2008-03-01
影响因子：
2.3
通讯作者：
Liu, Shu-Sheng
中科院分区：
文献类型：
--
作者：
Wang, Hua;Guo, Wen-Fei;Liu, Shu-Sheng
在植食性昆虫中，经验可以增加对非寄主植物提取物的积极反应或诱导在非寄主植物上产卵，但对其潜在的化学和行为机制知之甚少。以小菜蛾、其寄主植物大白菜和非寄主植物菊花为模型系统，观察了产卵雌蛾对非寄主植物挥发物、非寄主植物中的纯化合物（对伞花烃和α-萜品烯）的挥发物以及这些化合物处理的寄主植物挥发物的嗅觉反应。我们评估了经验改变产卵偏好对伞花烃处理的寄主植物。天真的雌性对非宿主植物、纯化学物质和纯化学物质处理过的宿主植物的气味表现出厌恶。相比之下，有经验的女性要么成为吸引这些非主机气味或不再排斥这些气味。同样，天真的女性奠定了一个显着较低比例的纯化学处理的寄主植物比未处理的寄主植物的鸡蛋，但有经验的女性奠定了类似或更高比例的纯化学处理的寄主植物的鸡蛋相比，未处理的寄主植物。化学分析表明，施用非寄主纯化学品可诱导白菜挥发性物质的释放。我们的结论是诱导偏好以前的驱虫化合物是一个主要的机制，导致这种蛾对非寄主植物或其提取物的行为变化。
In phytophagous insects, experience can increase positive responses towards non-host plant extracts or induce oviposition on non-host plants, but the underlying chemical and behavioral mechanisms are poorly understood. By using the diamondback moth, Plutella xylostella, its host plant Chinese cabbage, and a non-host plant Chrysanthemum morifolium, as a model system, we observed the experience-altered olfactory responses of ovipositing females towards volatiles of the non-host plant, volatiles of pure chemicals (p-cymene and alpha-terpinene) found in the non-host plant, and volatiles of host plants treated with these chemicals. We assessed the experience-altered oviposition preference towards host plants treated with p-cymene. Naive females showed aversion to the odors of the non-host plant, the pure chemicals, and the pure chemical-treated host plants. In contrast, experienced females either became attracted by these non-host odors or were no longer repelled by these odors. Similarly, naive females laid a significantly lower proportion of eggs on pure chemical-treated host plants than on untreated host plants, but experienced females laid a similar or higher proportion of eggs on pure chemical-treated host plants compared to untreated host plants. Chemical analysis indicated that application of the non-host pure chemicals on Chinese cabbage induced emissions of volatiles by this host plant. We conclude that induced preference for previously repellent compounds is a major mechanism that leads to behavioral changes of this moth towards non-host plants or their extracts.