Species Invasion History Influences Community Evolution in a Tri-Trophic Food Web Model
Species Invasion History Influences Community Evolution in a Tri-Trophic Food Web Model
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DOI：
10.1371/journal.pone.0006731
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发表时间：
2009-08-24
期刊：
影响因子：
3.7
通讯作者：
Nishimura, Kinya
中科院分区：
文献类型：
--
作者：
Mougi, Akihiko;Nishimura, Kinya
背景：近年来的实验研究表明，入侵历史对群落的进化形成具有重要意义。然而，只有少数社区进化的理论研究集中在这样的views.Methodology和主要发现：我们使用了一个三营养食物网模型来分析生态入侵的协同进化效应的突变体和捕食者和/或资源物种的本地消费物种社区，发现生态入侵可以导致各种进化历史。一种捕食者的入侵使多个进化群落历史成为可能，而随后的进化历史既决定了捕食者入侵本地群落的成功，也决定了群落的命运。生态入侵时机上的微小差异可能导致截然不同的命运。此外，由于环境变化（例如捕食者特征转变或生产力变化），即使是截然不同的群落历史也可能趋同。此外，进化历史的变化可能是不可逆的。结论和意义：我们的模拟结果表明，一个物种进入一个焦点群落的生态入侵的时间可以在很大程度上改变群落的进化后果。我们的方法基于适应动力学将是一个有用的工具，了解入侵历史的影响，进化形成的社区。
Background: Recent experimental studies have demonstrated the importance of invasion history for evolutionary formation of community. However, only few theoretical studies on community evolution have focused on such views.Methodology and Principal Findings: We used a tri-trophic food web model to analyze the coevolutionary effects of ecological invasions by a mutant and by a predator and/or resource species of a native consumer species community and found that ecological invasions can lead to various evolutionary histories. The invasion of a predator makes multiple evolutionary community histories possible, and the evolutionary history followed can determine both the invasion success of the predator into the native community and the fate of the community. A slight difference in the timing of an ecological invasion can lead to a greatly different fate. In addition, even greatly different community histories can converge as a result of environmental changes such as a predator trait shift or a productivity change. Furthermore, the changes to the evolutionary history may be irreversible.Conclusions and Significance: Our modeling results suggest that the timing of ecological invasion of a species into a focal community can largely change the evolutionary consequences of the community. Our approach based on adaptive dynamics will be a useful tool to understand the effect of invasion history on evolutionary formation of community.