Evolution and coevolution in mutualistic networks
Evolution and coevolution in mutualistic networks
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DOI：
10.1111/j.1461-0248.2011.01649.x
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发表时间：
2011-09-01
期刊：
影响因子：
8.8
通讯作者：
Thompson, John N.
中科院分区：
文献类型：
--
作者：
Guimaraes, Paulo R., Jr.;Jordano, Pedro;Thompson, John N.
进化生物学目前面临的一个主要挑战是了解相互作用的物种网络如何塑造共同进化过程。我们结合性状进化的模型与20个动植物组合的数据，探讨互利网络中的协同进化。结果揭示了物种丰富的互惠共生中协同进化的三个基本方面。首先，共同进化通过加速进化的整体速度来塑造互惠网络中的物种特征。第二，协同进化导致相互作用伙伴之间更高的性状互补性和同一营养级物种之间的性状趋同。第三，在超级通才的存在下，趋同性更高，超级通才是与多个物种群体相互作用的物种。我们预测，世界范围内的超通才发生的变化将改变共同进化如何塑造相互作用的物种网络。蜜蜂等引入物种将有利于入侵群落的特征趋同，而大型食果动物的消失将导致热带生态系统的特征差异增加。
A major current challenge in evolutionary biology is to understand how networks of interacting species shape the coevolutionary process. We combined a model for trait evolution with data for twenty plant-animal assemblages to explore coevolution in mutualistic networks. The results revealed three fundamental aspects of coevolution in species-rich mutualisms. First, coevolution shapes species traits throughout mutualistic networks by speeding up the overall rate of evolution. Second, coevolution results in higher trait complementarity in interacting partners and trait convergence in species in the same trophic level. Third, convergence is higher in the presence of super-generalists, which are species that interact with multiple groups of species. We predict that worldwide shifts in the occurrence of super-generalists will alter how coevolution shapes webs of interacting species. Introduced species such as honeybees will favour trait convergence in invaded communities, whereas the loss of large frugivores will lead to increased trait dissimilarity in tropical ecosystems.