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首页> 外文期刊>Ecology letters >A newly discovered role of evolution in previously published consumer-resource dynamics
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A newly discovered role of evolution in previously published consumer-resource dynamics

机译:进化在先前发布的消费者资源动态中的新发现作用

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摘要

Consumer-resource interactions are fundamental components of ecological communities. Classic features of consumer-resource models are that temporal dynamics are often cyclic, with a ?-period lag between resource and consumer population peaks. However, there are few published empirical examples of this pattern. Here, we show that many published examples of consumer- resource cycling show instead patterns indicating eco-evolutionary dynamics. When prey evolve along a trade-off between defence and competitive ability, two-species consumer-resource cycles become longer and antiphase (half-period lag, so consumer maxima coincide with minima of the resource species). Using stringent criteria, we identified 21 two-species consumer-resource time series, published between 1934 and 1997, suitable to investigate for eco-evolutionary dynamics. We developed a statistical method to probe for a transition from classic to eco-evolutionary cycles, and find evidence for eco-evolutionary type cycles in about half of the studies. We show that rapid prey evolution is the most likely explanation for the observed patterns.
机译:消费者与资源的互动是生态社区的基本组成部分。消费者资源模型的经典特征是时间动态通常是周期性的,在资源高峰期和消费者高峰期之间有一个?周期的滞后。但是,很少有这种形式的已公开的经验示例。在这里,我们表明,许多已发布的消费者资源循环的示例都显示了指示生态进化动态的模式。当猎物在防御能力和竞争能力之间进行权衡时,两类消费者的资源循环变得更长且呈反相位(半周期滞后,因此消费者的最大值与资源种类的最小值重合)。使用严格的标准,我们确定了1934年至1997年之间发布的21种两种物种的消费者资源时间序列,适用于研究生态进化动力学。我们开发了一种统计方法,以探索从经典进化周期到生态进化周期的转变,并在大约一半的研究中找到了生态进化类型周期的证据。我们表明,快速的猎物进化是观察到的模式的最可能的解释。

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