全球智库信息集成服务系统(G2TT): On evolution under asymmetric competition.

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来源类型	Article
规范类型	其他
DOI	10.1023/A:1018441108982
	On evolution under asymmetric competition.
	Law R; Marrow P; Dieckmann U
发表日期	1997
出处	Evolutionary Ecology 11 (4): 485-501
出版年	1997
语种	英语
摘要	The evolutionary consequences of asymmetric competition between species are poorly understood in comparison with symmetric competition. A model for evolution of body size under asymmetric competition within and between species is described. The model links processes operating at the scale of the individual to that of macroscopic evolution through a stochastic mutationselection process. Phase portraits of evolution in a phenotype space characteristically show character convergence and parallel character shifts, with character divergence being relatively uncommon. The asymptotic states of evolution depend very much on the properties of asymmetric competition. Given relatively weak asymmetries between species, a single equilibrium point exists; this is a local attractor, and its position is determined by the intra- and interspecific asymmetries. When the asymmetries are made stronger, several fixed points may come about, creating further equilibrium points which are local attractors. It is also possible for periodic attractors to occur; such attractors comprise Red Queen dynamics with phenotype values that continue to change without ever settling down to constant values. From certain initial conditions, evolution leading to extinction of one of the species is also a likely outcome.
主题	Adaptive Dynamics Network (ADN)
关键词	Adaptive dynamics Asymmetric competition Co-evolution Competition Evolutionarily stable strategy Frequency-dependent selection Red Queen dynamics Stochastic process
URL	http://pure.iiasa.ac.at/id/eprint/5109/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/127644
推荐引用方式 GB/T 7714	Law R,Marrow P,Dieckmann U. On evolution under asymmetric competition.. 1997.