| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1073/pnas.1525749113 |
| Roles of density-dependent growth and life history evolution in accounting for fisheries-induced trait changes. | |
| Eikeset AM; Dunlop ES; Heino M; Storvik Geir; Stenseth NC; Dieckmann U | |
| 发表日期 | 2016 |
| 出处 | Proceedings of the National Academy of Sciences 113 (52): 15030-15035 |
| 出版年 | 2016 |
| 语种 | 英语 |
| 摘要 | The relative roles of density dependence and life history evolution in contributing to rapid fisheries-induced trait changes remain debated. In the 1930s, northeast Arctic cod (Gadus morhua), currently the world’s largest cod stock, experienced a shift from a traditional spawning-ground fishery to an industrial trawl fishery with elevated exploitation in the stock’s feeding grounds. Since then, age and length at maturation have declined dramatically, a trend paralleled in other exploited stocks worldwide. These trends can be explained by demographic truncation of the population’s age structure, phenotypic plasticity in maturation arising through density-dependent growth, fisheries-induced evolution favoring faster-growing or earlier-maturing fish, or a combination of these processes. Here, we use a multitrait eco-evolutionary model to assess the capacity of these processes to reproduce 74 y of historical data on age and length at maturation in northeast Arctic cod, while mimicking the stock’s historical harvesting regime. Our results show that model predictions critically depend on the assumed density dependence of growth: when this is weak, life history evolution might be necessary to prevent stock collapse, whereas when a stronger density dependence estimated from recent data is used, the role of evolution in explaining fisheries-induced trait changes is diminished. Our integrative analysis of density-dependent growth, multitrait evolution, and stock-specific time series data underscores the importance of jointly considering evolutionary and ecological processes, enabling a more comprehensive perspective on empirically observed stock dynamics than previous studies could provide. |
| 主题 | Evolution and Ecology (EEP) |
| 关键词 | phenotypic plasticity, eco-evolutionary dynamics, management, genetic adaptation, genetic variance |
| URL | http://pure.iiasa.ac.at/id/eprint/14117/ |
| 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/130651 |
| 推荐引用方式 GB/T 7714 | Eikeset AM,Dunlop ES,Heino M,et al. Roles of density-dependent growth and life history evolution in accounting for fisheries-induced trait changes.. 2016. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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