Herbivory on invasive exotic plants and their non-invasive relatives
Herbivory on invasive exotic plants and their non-invasive relatives
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DOI：
10.1007/s10530-008-9236-z
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发表时间：
2008-08-01
影响因子：
2.9
通讯作者：
Cappuccino, Naomi
中科院分区：
文献类型：
--
作者：
Jogesh, Tania;Carpenter, David;Cappuccino, Naomi
敌人释放假说将外来植物的成功与逃脱食草动物和病原体等敌人联系在一起。最近的研究表明，与在其新范围内具有更高的敌人负载的植物相比，更完全逃脱草食动物和病原体的外来植物更有可能成为高度入侵的植物。我们预测，在实验室的非选择饲养试验中，来自菊科和十字花科的高度入侵的植物将不太能被多面手草食动物美洲蝗虫接受。我们还比较了侵入性和非侵入性的矢车菊属植物的食草性，在非选择性饲养试验中，使用红腿蝗虫Melanoplus Femurrubrum，以及在田间的一个普通花园中。根据我们的预测，高度入侵的植物在实验室里以较少的蝗虫为食。它们在田间受到的损害也较小，这表明它们含有取食威慑物质，这使得它们比非入侵植物更不能被多面手的草食动物接受。
The Enemy Release Hypothesis links exotic plant success to escape from enemies such as herbivores and pathogens. Recent work has shown that exotic plants that more fully escape herbivores and pathogens are more likely to become highly invasive, compared to plants with higher enemy loads in their novel ranges. We predicted that highly invasive plants from the Asteraceae and the Brassicaceae would be less acceptable, in laboratory no-choice feeding trials, to the generalist herbivore the American grasshopper, Schistocerca americana. We also compared herbivory on invasive and non-invasive plants from the genus Centaurea in no-choice feeding trials using the red-legged grasshopper Melanoplus femurrubrum and in a common garden in the field. In accordance with our predictions, highly invasive plants were fed on less by grasshoppers in the laboratory. They also received less damage in the field, suggesting that they contain feeding deterrents that render them less acceptable to generalist herbivores than non-invasive plants.