Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland.
Ecol Lett. 2011 Oct;14(10):1025-34. doi: 10.1111/j.1461-0248.2011.01671.x. Epub 2011 Jul 27.
Ecology Letters (2011) 14: 1025-1034 ABSTRACT: Evolutionary changes in natural populations are often so fast that the evolutionary dynamics may influence ecological population dynamics and vice versa. Here we construct an eco-evolutionary model for dispersal by combining a stochastic patch occupancy metapopulation model with a model for changes in the frequency of fast-dispersing individuals in local populations. We test the model using data on allelic variation in the gene phosphoglucose isomerase (Pgi), which is strongly associated with dispersal rate in the Glanville fritillary butterfly. Population-specific measures of immigration and extinction rates and the frequency of fast-dispersing individuals among the immigrants explained 40% of spatial variation in Pgi allele frequency among 97 local populations. The model clarifies the roles of founder events and gene flow in dispersal evolution and resolves a controversy in the literature about the consequences of habitat loss and fragmentation on the evolution of dispersal.
生态学通讯（2011 年）14：1025-1034 摘要：自然种群中的进化变化通常非常迅速，以至于进化动态可能会影响生态种群动态，反之亦然。在这里，我们通过将随机斑块占据化学生物种群模型与局部种群中快速扩散个体频率变化的模型相结合，构建了一个用于扩散的生态进化模型。我们使用基因磷酸葡萄糖异构酶（Pgi）等位基因变异的数据来检验该模型，该基因与蝴蝶 Glanville fritillary 的扩散率密切相关。97 个局部种群中，移民的种群特异性迁入率和灭绝率以及快速扩散个体的频率解释了 Pgi 等位基因频率的 40%的空间变异。该模型阐明了奠基者事件和基因流在扩散进化中的作用，并解决了关于栖息地丧失和破碎化对扩散进化后果的文献争议。
