| 来源类型 | Monograph (IIASA Interim Report) |
| 规范类型 | 报告 |
| The Impact of Fishing-induced Mortality on the Evolution of Alternative Life-history Tactics in Brook Charr. | |
| Theriault V; Dunlop ES; Dieckmann U; Bernatchez L; Dodson JJ | |
| 发表日期 | 2008 |
| 出版者 | IIASA, Laxenburg, Austria: IR-08-042 |
| 出版年 | 2008 |
| 语种 | 英语 |
| 摘要 | Although contemporary trends indicative of evolutionary change have been detected in the lifehistory traits of exploited populations, it is not known to what extent fishing influences the evolution of alternative life-history tactics in migratory species such as salmonids. Here, we build a model to predict the evolution of anadromy and residency in an exploited population of brook charr, 'Salvelinus fontinalis'. Our model allows for both phenotypic plasticity and genetic change in the age and size at migration by including migration reaction norms. Using this model, we predict that fishing of anadromous individuals over the course of 100 years causes evolution in the migration reaction norm, resulting in a decrease in average probabilities of migration with increasing harvest rate. Moreover, we show that differences in natural mortalities in freshwater greatly influence the magnitude and rate of evolutionary change. The fishing-induced changes in migration predicted by our model alter population abundances and reproductive output and should be accounted for in the sustainable management of salmonids. |
| 主题 | Evolution and Ecology (EEP) |
| URL | http://pure.iiasa.ac.at/id/eprint/8747/ |
| 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/125640 |
| 推荐引用方式 GB/T 7714 | Theriault V,Dunlop ES,Dieckmann U,et al. The Impact of Fishing-induced Mortality on the Evolution of Alternative Life-history Tactics in Brook Charr.. 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-08-042.pdf（505KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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