Saccheri Ilik, Hanski Ilkka
School of Biological Sciences, University of Liverpool, The Biosciences Building, Crown Street, Liverpool L69 7ZB, UK.
Trends Ecol Evol. 2006 Jun;21(6):341-7. doi: 10.1016/j.tree.2006.03.018. Epub 2006 Apr 18.
To what extent, and under which circumstances, are population dynamics influenced by concurrent natural selection? Density dependence and environmental stochasticity are generally expected to subsume any selective modulation of population growth rate, but theoretical considerations point to conditions under which selection can have an appreciable impact on population dynamics. By contrast, empirical research has barely scratched the surface of this fundamental question in population biology. Here, we present a diverse body of mostly empirical evidence that demonstrates how selection can influence population dynamics, including studies of small populations, metapopulations, cyclical populations and host-pathogen interactions. We also discuss the utility, in this context, of inferences from molecular genetic data, placing them within the broader framework of quantitative genetics and life-history evolution.
在何种程度上以及在哪些情况下，种群动态会受到同时发生的自然选择的影响？通常认为密度依赖性和环境随机性会涵盖对种群增长率的任何选择性调节，但理论思考指出了一些条件，在这些条件下选择可能会对种群动态产生显著影响。相比之下，实证研究在种群生物学这个基本问题上几乎还未触及皮毛。在这里，我们展示了大量主要是实证性的证据，这些证据表明了选择如何能够影响种群动态，包括对小种群、集合种群、周期性种群以及宿主 - 病原体相互作用的研究。我们还讨论了在此背景下从分子遗传数据进行推断的效用，并将其置于数量遗传学和生活史进化的更广泛框架内。
