| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1111/j.1752-4571.2009.00095.x |
| Mitigating fisheries-induced evolution in lacustrine brook charr (Salvelinus fontinalis) in southern Quebec, Canada. | |
| Okamoto KW; Whitlock R; Magnan P; Dieckmann U | |
| 发表日期 | 2009 |
| 出处 | Evolutionary Applications 2 (3): 415-437 |
| 出版年 | 2009 |
| 语种 | 英语 |
| 摘要 | Size-selective mortality caused by fishing can impose strong selection on harvested fish populations, causing evolution in important life-history traits. Understanding and predicting harvest-induced evolutionary change can help maintain sustainable fisheries. We investigate the evolutionary sustainability of alternative management regimes for lacustrine brook charr (Salvelinus fontinalis) fisheries in southern Canada and aim to optimize these regimes with respect to the competing objectives of maximizing mean annual yield and minimizing evolutionary change in maturation schedules. Using a stochastic simulation model of brook charr populations consuming a dynamic resource, we investigate how harvesting affects brook charr maturation schedules. We show that when approximately 5% to 15% of the brook charr biomass is harvested, yields are high, and harvest- induced evolutionary changes remain small. Intensive harvesting (at approximately >15% of brook charr biomass) results in high average yields and little evolutionary change only when harvesting is restricted to brook charr larger than the size at 50% maturation probability at the age of 2 years. Otherwise, intensive harvesting lowers average yield and causes evolutionary change in the maturation schedule of brook charr. Our results indicate that intermediate harvesting efforts offer a acceptable compromise between avoiding harvest-induced evolutionary change and securing high average yields. |
| 主题 | Evolution and Ecology (EEP) ; Postdoctoral Scholars (PDS) |
| 关键词 | Fisheries-induced adaptive change Management regimes Models Probabilistic maturation reaction norm Salvelinus fontinalis |
| URL | http://pure.iiasa.ac.at/id/eprint/8826/ |
| 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/128914 |
| 推荐引用方式 GB/T 7714 | Okamoto KW,Whitlock R,Magnan P,et al. Mitigating fisheries-induced evolution in lacustrine brook charr (Salvelinus fontinalis) in southern Quebec, Canada.. 2009. |
| 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 | ||
| j.1752-4571.2009.000（1106KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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