| 来源类型 | Monograph (IIASA Working Paper) |
| 规范类型 | 论文 |
| On Evolution under Asymmetric Competition. | |
| Law R; Marrow P; Dieckmann U | |
| 发表日期 | 1996 |
| 出版者 | IIASA, Laxenburg, Austria: WP-96-003 |
| 出版年 | 1996 |
| 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 mutation-selection 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) |
| URL | http://pure.iiasa.ac.at/id/eprint/5022/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/124652 |
| 推荐引用方式 GB/T 7714 | Law R,Marrow P,Dieckmann U. On Evolution under Asymmetric Competition.. 1996. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| WP-96-003.pdf（2038KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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