| 来源类型 | Monograph (IIASA Interim Report) |
| 规范类型 | 报告 |
| The Demographic and Evolutionary Consequences of Selective Mortality: Predictions from an Eco-genetic Model of Smallmouth Bass. | |
| Dunlop ES; Shuter BJ; Dieckmann U | |
| 发表日期 | 2006 |
| 出版者 | IIASA, Laxenburg, Austria: IR-06-060 |
| 出版年 | 2006 |
| 语种 | 英语 |
| 摘要 | We use an individual-based eco-genetic model to examine the demographic and evolutionary consequences of selective mortality on a species with parental care, the smallmouth bass "Micropterus dolomieu" . Our analyses are grounded in a long-term (1936-2003) empirical study of the dynamics of two populations that differ widely in both density and life history. The model we construct extends previous approaches by including phenotypic plasticity in the age and size at maturation, by permitting density-dependent somatic growth, and by analyzing how costs associated with parental care alter model predictions. We show that, first, additional mortality on age-0 individuals applied for 100 years causes reduced population abundance and biomass, faster somatic growth rates, and phenotypic plasticity toward slightly larger sizes at maturation. Second, mortality on individuals above a minimum size limit, also applied for 100 years, has a small influence on population abundance and somatic growth, causes a reduction of biomass, as well as substantial evolution of the probabilistic maturation reaction norm leading to younger ages and smaller sizes at maturation. Third, the incorporation of body-size-dependent survival costs associated with parental care (i.e., by reducing the number of small breeding adults at high population densities, increasing the mortality of parents that breed at small body sizes, or increasing the mortality of offspring originating from small-sized parents), reduces the amount of evolution predicted to occur within 100 years. Together, these results underscore that selective harvest can cause both phenotypically plastic responses and rapid evolution, however, the rate and magnitude of the evolved changes are sensitive to a species life history characteristics. |
| 主题 | Evolution and Ecology (EEP) ; Postdoctoral Scholars (PDS) |
| 关键词 | Probabilistic maturation reaction norm Harvest Evolution Phenotypic plasticity Life history Density-dependent growth Eco-genetic model Fishing-induced adaptive change Parental care Individual-based model Species introduction |
| URL | http://pure.iiasa.ac.at/id/eprint/8039/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/125498 |
| 推荐引用方式 GB/T 7714 | Dunlop ES,Shuter BJ,Dieckmann U. The Demographic and Evolutionary Consequences of Selective Mortality: Predictions from an Eco-genetic Model of Smallmouth Bass.. 2006. |
| 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 | ||
| IR-06-060.pdf（366KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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