Frickel Jens, Sieber Michael, Becks Lutz
Community Dynamics Group, Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, 24306, Plön, Germany.
Institute of Biochemistry and Biology, Universität Potsdam, D-14469, Potsdam, Germany.
Ecol Lett. 2016 Apr;19(4):450-9. doi: 10.1111/ele.12580. Epub 2016 Feb 21.
Eco-evolutionary dynamics have been shown to be important for understanding population and community stability and their adaptive potential. However, coevolution in the framework of eco-evolutionary theory has not been addressed directly. Combining experiments with an algal host and its viral parasite, and mathematical model analyses we show eco-evolutionary dynamics in antagonistic coevolving populations. The interaction between antagonists initially resulted in arms race dynamics (ARD) with selective sweeps, causing oscillating host-virus population dynamics. However, ARD ended and populations stabilised after the evolution of a general resistant host, whereas a trade-off between host resistance and growth then maintained host diversity over time (trade-off driven dynamics). Most importantly, our study shows that the interaction between ecology and evolution had important consequences for the predictability of the mode and tempo of adaptive change and for the stability and adaptive potential of populations.
生态进化动力学已被证明对于理解种群和群落稳定性及其适应潜力至关重要。然而，生态进化理论框架下的协同进化尚未得到直接探讨。通过将藻类宿主与其病毒寄生虫的实验以及数学模型分析相结合，我们展示了对抗性协同进化种群中的生态进化动力学。拮抗剂之间的相互作用最初导致了带有选择性清除的军备竞赛动态（ARD），从而引起宿主 - 病毒种群动态的振荡。然而，在一种普遍抗性宿主进化后，ARD结束且种群趋于稳定，而宿主抗性与生长之间的权衡随后随着时间推移维持了宿主多样性（权衡驱动动态）。最重要的是，我们的研究表明，生态与进化之间的相互作用对于适应性变化的模式和节奏的可预测性以及种群的稳定性和适应潜力具有重要影响。
