Abstract. Herbivore damage can induce anti-herbivore traits in plants. However, there is little data regarding how these induced traits affect a plant's palatability (an important factor in determining the likelihood and magnitude of herbivore damage) across multiple generations post-induction, or whether the effect of transgenerational induction differs between generalist and specialist herbivores. Here we used palatability as a measure of the effects of transgenerational defensive induction in wild radish plants. We conducted a greenhouse experiment to determine whether generalist (slugs) and specialist (caterpillars of the white cabbage butterfly) herbivores' preference for wild radish differed depending on the number of previous generations that experienced herbivory. We found lowered palatability in plants with two or three inductions in their past in the case of generalist slugs, while palatability to a specialist herbivore was not affected by transgenerational induction. We conclude that the history of herbivory experienced by a plant's ancestors over multiple generations may play an important role in its ability to defend itself against generalist herbivores, but not against the specialists with whom they have co-evolved. Our findings suggest that the effects that multiple past inductions may have on palatability down the family line can be expected to have ecological and evolutionary implications.

中文翻译：

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跨代诱导对一般和专业食草动物的植物适口性的累积影响

摘要。草食动物的损害可以在植物中诱导抗草食动物性状。然而，关于这些诱导性状如何影响诱导后多代植物的适口性（决定食草动物损害的可能性和程度的重要因素）的数据很少，或者跨代诱导的影响在通才和专业食草动物之间是否不同。在这里，我们使用适口性作为衡量野生萝卜植物中跨代防御诱导效果的指标。我们进行了一项温室实验，以确定通才（蛞蝓）和专家（白菜蝴蝶的毛虫）食草动物对野萝卜的偏好是否因经历食草的前几代人的数量而异。我们发现，在通才蛞蝓的情况下，过去进行过两次或三次诱导的植物的适口性降低，而专科食草动物的适口性不受跨代诱导的影响。我们得出的结论是，植物祖先经过多代的食草历史可能在其抵御通才食草动物而不是与它们共同进化的专家的能力方面发挥重要作用。我们的研究结果表明，过去多次诱导可能对家族的适口性产生的影响预计具有生态和进化意义。我们得出的结论是，植物祖先经过多代的食草历史可能在其抵御通才食草动物而不是与它们共同进化的专家的能力方面发挥重要作用。我们的研究结果表明，过去多次诱导可能对家族的适口性产生的影响预计具有生态和进化意义。我们得出的结论是，植物祖先经过多代的食草历史可能在其抵御通才食草动物而不是与它们共同进化的专家的能力方面发挥重要作用。我们的研究结果表明，过去多次诱导可能对家族的适口性产生的影响预计具有生态和进化意义。