| 来源类型 | Monograph (IIASA Interim Report) |
| 规范类型 | 报告 |
| Hybridization and speciation. | |
| Abbott R; Albach D; Ansell S; Arntzen JW; Baird SJE; Bierne N; Boughman J; Brelsford A | |
| 发表日期 | 2013 |
| 出版者 | IIASA, Laxenburg, Austria: IR-13-021 |
| 出版年 | 2013 |
| 语种 | 英语 |
| 摘要 | Hybridization has many and varied impacts on the process of speciation. Hybridization may slow or reverse differentiation by allowing gene flow and recombination. It may accelerate speciation via adaptive introgression or cause near-instantaneous speciation by allopolyploidization. It may have multiple effects at different stages and in different spatial contexts within a single speciation event. We offer a perspective on the context and evolutionary significance of hybridization during speciation, highlighting issues of current interest and debate. In secondary contact zones, it is uncertain if barriers to gene flow will be strengthened or broken down due to recombination and gene flow. Theory and empirical evidence suggest the latter is more likely, except within and around strongly selected genomic regions. Hybridization may contribute to speciation through the formation of new hybrid taxa, whereas introgression of a few loci may promote adaptive divergence and so facilitate speciation. Gene regulatory networks, epigenetic effects and the evolution of selfish genetic material in the genome suggest that the Dobzhansky-Muller model of hybrid incompatibilities requires a broader interpretation. Finally, although the incidence of reinforcement remains uncertain, this and other interactions in areas of sympatry may have knock-on effects on speciation both within and outside regions of hybridization. |
| 主题 | Evolution and Ecology (EEP) |
| 关键词 | Hybrid species Hybrid zone Incompatibility Introgression Reinforcement Reproductive barrier |
| URL | http://pure.iiasa.ac.at/id/eprint/10739/ |
| 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/125965 |
| 推荐引用方式 GB/T 7714 | Abbott R,Albach D,Ansell S,et al. Hybridization and speciation.. 2013. |
| 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-13-021.pdf（514KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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