Environmental heterogeneity and the evolution of mutualism

被引：12

作者：

不详

机构：

[1] Department of Plant Taxonomy and Ecology, Hungarian Academy of Sciences, Eötvös University, Budapest 1117

来源：

ECOLOGICAL COMPLEXITY | 2004年 / 1卷 / 04期

基金：

匈牙利科学研究基金会;

关键词：

Environmental heterogeneity; Evolution of mutualism; Intraspecific cooperation; Iterated prisoner's dilemma; Variable investment;

D O I：

10.1016/j.ecocom.2004.07.002

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Mutualistic interactions among species are common in most ecosystems. Despite the ubiquitous presence of mutualism, its evolutionary origin and stability has remained enigmatic. Here, we study this problem by generalizing Doebeli and Knowlton's spatial model for the evolution of mutualism [Doebeli, M., Knowlton, N., 1998. The evolution of interspecific mutualism. Proc. Natl. Acad. Sci. USA 95, 8676-8680]. We show that spatial environmental heterogeneity facilitates the evolution of mutualistic interactions under a wide range of plausible conditions. Our model exhibits complex spatial patch dynamics, with environmental heterogeneity reducing among patch migration and leading to increased phenotypic diversity. Moreover, under such environmental heterogeneity, we also observe that both mutualism and exploitative interactions can be permanently present in the same population. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：329 / 339

页数：11

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