| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.3354/meps257247 |
| Fisheries-induced trends in reaction norms for maturation in North Sea plaice. | |
| Grift RE; Rijnsdorp AD; Barot S; Heino M; Dieckmann U | |
| 发表日期 | 2003 |
| 出处 | Marine Ecology Progress Series : 247-257 |
| 出版年 | 2003 |
| 语种 | 英语 |
| 摘要 | We analyse how intensive exploitation may have caused evolutionary changes in the age and length at maturation in North Sea plaice Pleuronectes platessa. Such evolutionary change in the onset of maturation is expected, given that fishing mortality is more than 4 times higher than natural mortality. In order to disentangle phenotypic plasticity from evolutionary change, we employ the probabilistic reaction-norm approach. This technique allows us to estimate the probabilities of maturing at each relevant age and size, and to disentangle the plasticity in age and size at maturation that results from changes in growth rates from evolutionary changes in maturation propensities themselves. This recently developed method is applied here to females of 41 cohorts (1955 to 1995) of North Sea plaice. We focus on trends in fishing mortality, in growth rates, and in the probabilities of maturing, and test the hypothesis that the decrease in age and length at maturation is partly caused by fisheries-induced adaptive change. We find that the reaction norm for age and length at maturation has indeed significantly shifted towards younger age and smaller length. The reaction-norm analysis suggests a picture in which short-term fluctuations originating from plastic responses are superimposed on a persistent long-term trend resulting from genetic responses and higher body growth. |
| 主题 | Adaptive Dynamics Network (ADN) |
| 关键词 | Fisheries-induced change Phenotypic plasticity Evolution Growth rates |
| URL | http://pure.iiasa.ac.at/id/eprint/6825/ |
| 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/128219 |
| 推荐引用方式 GB/T 7714 | Grift RE,Rijnsdorp AD,Barot S,et al. Fisheries-induced trends in reaction norms for maturation in North Sea plaice.. 2003. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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