globalchange  > 气候变化与战略
DOI: 10.1111/ele.13470
论文题名:
Life-history strategy varies with the strength of competition in a food-limited ungulate population
作者: Kentie R.; Clegg S.M.; Tuljapurkar S.; Gaillard J.-M.; Coulson T.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期:5
起始页码: 811
结束页码: 820
语种: 英语
中文关键词: density dependence ; evolution ; IPM ; K-selection ; life history ; life-history trade-offs ; population dynamics ; r-selection ; Soay sheep ; stochasticity
英文关键词: Ovis aries ; Ungulata ; animal ; evolution ; life history trait ; population density ; population dynamics ; reproduction ; sheep ; Animals ; Biological Evolution ; Life History Traits ; Population Density ; Population Dynamics ; Reproduction ; Sheep
英文摘要: Fluctuating population density in stochastic environments can contribute to maintain life-history variation within populations via density-dependent selection. We used individual-based data from a population of Soay sheep to examine variation in life-history strategies at high and low population density. We incorporated life-history trade-offs among survival, reproduction and body mass growth into structured population models and found support for the prediction that different life-history strategies are optimal at low and high population densities. Shorter generation times and lower asymptotic body mass were selected for in high-density environments even though heavier individuals had higher probabilities to survive and reproduce. In contrast, greater asymptotic body mass and longer generation times were optimal at low population density. If populations fluctuate between high density when resources are scarce, and low densities when they are abundant, the variation in density will generate fluctuating selection for different life-history strategies, that could act to maintain life-history variation. © 2020 John Wiley & Sons Ltd/CNRS
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被引频次[WOS]:13   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166651
Appears in Collections:气候变化与战略

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作者单位: Department of Zoology, University of Oxford, Oxford, OX1 3PS, United Kingdom; Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, P.O. Box 59, Den Burg, Texel, 1790 AB, Netherlands; Department of Zoology, Edward Grey Institute, University of OxfordOX1 3PS, United Kingdom; Department of Biology, Stanford University, Stanford, CA 94305-5020, United States; UMR 5558 Biometrie et Biologie Evolutive, Batiment G. Mendel, Universite Claude Bernard Lyon 1, 43 boulevard du 11 novembre 1918, Villeurbanne Cedex, 69622, France

Recommended Citation:
Kentie R.,Clegg S.M.,Tuljapurkar S.,et al. Life-history strategy varies with the strength of competition in a food-limited ungulate population[J]. Ecology Letters,2020-01-01,23(5)
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