Do arms races punctuate evolutionary stasis? Unified insights from phylogeny, phylogeography and microevolutionary processes
Do arms races punctuate evolutionary stasis? Unified insights from phylogeny, phylogeography and microevolutionary processes
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DOI：
10.1111/j.1365-294x.2009.04340.x
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发表时间：
2009-09
影响因子：
4.9
通讯作者：
Hirokazu Toju;T. Sota
中科院分区：
文献类型：
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作者：
Hirokazu Toju;T. Sota
进化生物学中的一个主要争议是关于宏观进化模式背后的过程，在宏观进化模式中，长期停滞被快速、短期的进化所破坏，导致物种进入新的适应区域。在理解当代进化方面的最新进展表明，由于环境变化，这种快速进化可以在野外发生。在这里，我们检验了一个新的假设，即进化停滞被共同进化的军备竞赛所打断，共同进化的军备竞赛不断地改变适应的高峰和景观。基于Curculio属长口象甲的系统发育，似然比检验表明，该属的宏观进化模式符合点状进化模式。对一个物种Curculio Camelliae的联合分析进一步表明，在7000代内发生了重大的进化转变。由于与寄主植物的军备竞赛，该物种的口部在不同种群之间出现了相当大的差异。通过对物种的微观进化分析，我们还发现，通过共同进化相互作用的自然选择具有足够强大的潜力，可以推动适应区域之间的快速进化转变。总体而言，我们认为共同进化是推动生物进化史的一个重要因素。
One of the major controversies in evolutionary biology concerns the processes underlying macroevolutionary patterns in which prolonged stasis is disrupted by rapid, short‐term evolution that leads species to new adaptive zones. Recent advances in the understanding of contemporary evolution have suggested that such rapid evolution can occur in the wild as a result of environmental changes. Here, we examined a novel hypothesis that evolutionary stasis is punctuated by co‐evolutionary arms races, which continuously alter adaptive peaks and landscapes. Based on the phylogeny of long‐mouthed weevils in the genus Curculio, likelihood ratio tests showed that the macroevolutionary pattern of the weevils coincides with the punctuational evolution model. A coalescent analysis of a species, Curculio camelliae, the mouthpart of which has diverged considerably among populations because of an arms race with its host plant, further suggested that major evolutionary shifts had occurred within 7000 generations. Through a microevolutionary analysis of the species, we also found that natural selection acting through co‐evolutionary interactions is potentially strong enough to drive rapid evolutionary shifts between adaptive zones. Overall, we posit that co‐evolution is an important factor driving the history of organismal evolution.