| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1111/j.0014-3820.2002.tb01378.x |
| Measuring probabilistic reaction norms for age and size and maturation. | |
| Heino M; Dieckmann U; Godoe OR | |
| 发表日期 | 2002 |
| 出处 | Evolution 56 (4): 669-678 |
| 出版年 | 2002 |
| 语种 | 英语 |
| 摘要 | We present a new probabilistic concept of reaction norms for age and size at maturation that is applicable when observations are carried out at discrete time intervals. This approach can also be used to estimate reaction norms for age and size at metamorphosis or at other ontogenetic transitions. Such estimations are critical for understanding phenotypic plasticity and life-history changes in variable environments, assessing genetic changes in the presence of phenotypic plasticity, and calibrating size- and age-structured population models. We show that previous approaches to this problem, based on regressing size against age at maturation, give results that are systematically biased when compared to the probabilistic reaction norms. The bias can be substantial and is likely to lead to qualitatively incorrect conclusions; it is caused by failing to account for the probabilistic nature of the maturation process. We explain why, instead, robust estimations of maturation reaction norms should be based on logistic regression or on other statistical models that treat the probability of maturing as a dependent variable. We demonstrate the utility of our approach with two examples. First, the analysis of data generated for a known reaction norm highlights some crucial limitations of previous approaches. Second, application to the northeast arctic cod (Gadus morhua) illustrates how our approach can be used to shed new light on existing real-world data. |
| 主题 | Adaptive Dynamics Network (ADN) |
| 关键词 | Body size Life history Logistic regression Maturation Metamorphosis Phenotypic plasticity Reaction norm |
| URL | http://pure.iiasa.ac.at/id/eprint/6599/ |
| 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/128148 |
| 推荐引用方式 GB/T 7714 | Heino M,Dieckmann U,Godoe OR. Measuring probabilistic reaction norms for age and size and maturation.. 2002. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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