| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1111/j.1600-0706.2009.17746.x |
| Multiple growth-correlated life history traits estimated simultaneously in individuals. | |
| Mollet FM; Ernande B; Brunel T; Rijnsdorp AD | |
| 发表日期 | 2010 |
| 出处 | Oikos 119 (1): 10-26 |
| 出版年 | 2010 |
| 语种 | 英语 |
| 摘要 | We present a new methodology to estimate rates of energy acquisition, maintenance, reproductive investment and the onset of maturation (four-trait estimation) by fitting an energy allocation model to individual growth trajectories. The accuracy and precision of the method is evaluated on simulated growth trajectories. In the deterministic case, all life history parameters are well estimated with negligible bias over realistic parameter ranges. Adding environmental variability reduces precision, causes the maintenance and reproductive investment to be confounded with a negative error correlation, and tends, if strong, to result in an underestimation of the energy acquisition and maintenance and an overestimation of the age and size at the onset of maturation. Assuming a priori incorrect allometric scaling exponents also leads to a general but fairly predictable bias. To avoid confounding in applications we propose to assume a constant maintenance (three-trait estimation), which can be obtained by fitting reproductive investment simultaneously to size at age on population data. The results become qualitatively more robust but the improvement of the estimate of the onset of maturation is not significant. When applied to growth curves back-calculated from otoliths of female North Sea plaice Pleuronectes platessa, the four-trait and three-trait estimation produced estimates for the onset of maturation very similar to those obtained by direct observation. The correlations between life-history traits match expectations. We discuss the potential of the methodology in studies of the ecology and evolution of life history parameters in wild populations. |
| 主题 | Evolution and Ecology (EEP) |
| URL | http://pure.iiasa.ac.at/id/eprint/9301/ |
| 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/129051 |
| 推荐引用方式 GB/T 7714 | Mollet FM,Ernande B,Brunel T,et al. Multiple growth-correlated life history traits estimated simultaneously in individuals.. 2010. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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