| 来源类型 | Monograph (IIASA Interim Report) |
| 规范类型 | 报告 |
| An Analytically Tractable Model for Competitive Speciation. | |
| Pennings PS; Kopp M; Meszena G; Dieckmann U; Hermisson J | |
| 发表日期 | 2008 |
| 出版者 | IIASA, Laxenburg, Austria: IR-08-046 |
| 出版年 | 2008 |
| 语种 | 英语 |
| 摘要 | Several recent models have shown that frequency-dependent disruptive selection created by intraspecific competition can lead to the evolution of assortative mating 4 and, thus, to competitive sympatric speciation. However, since most results from these 5 models rely on limited numerical analyses, their generality has been subject to considerable debate. Here, we consider one of the standard models, the so-called Roughgarden model, with a simplified genetics where the selected trait is determined by a single diallelic locus. This model is sufficiently complex to maintain key properties of the general multilocus case, but still simple enough to allow for a comprehensive analytical treatment. By means of invasion fitness analysis, we describe the impact of all model parameters on the evolution of assortative mating. Depending on (1) the strength and (2) shape of stabilizing selection, (3) the strength and (4) shape of pairwise competition, (5) the shape of the mating function, and (6) the type of assortative mating, which may or may not lead to sexual selection, we find five different evolutionary regimes. In one of these regimes, the evolution of complete reproductive isolation is possible through arbitrarily small steps in the strength of assortative mating. Our approach provides a mechanistic understanding of several phenomena that have been found in previous models. The results demonstrate how, even in a simple model of competitive speciation, results depend in a complex way on ecological and genetic parameters. |
| 主题 | Evolution and Ecology (EEP) |
| URL | http://pure.iiasa.ac.at/id/eprint/8743/ |
| 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/125636 |
| 推荐引用方式 GB/T 7714 | Pennings PS,Kopp M,Meszena G,et al. An Analytically Tractable Model for Competitive Speciation.. 2008. |
| 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 | ||
| IR-08-046.pdf（473KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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