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- W2000301641 abstract "I address physiological connections between foraging behavior and population dynamics. How should young animals apportion the biomass gained from food consumed while foraging between growing fatter and growing bigger? Fat reserves aid survival through adverse periods, while growing faster helps animals reach reproductive size sooner. A dynamic state-dependent model enabled the optimal allocation of surplus metabolites in seasonally variable but otherwise stochastic environments to be established, with large mammalian herbivores in mind. Basic assumptions included the form of the fat-dependent and size-dependent survival functions, i.e. the state-dependence of fitness. Findings suggest that animals should store as little fat as needed as late as possible, but with the minimum need elevated by greater environmental uncertainty. Tradeoffs in allocation between growth and storage could explain why survival rates for immature animals are necessarily more variable than those of adults among large mammalian herbivores. The simple model could be expanded to establish the optimal age at first reproduction, the appropriate reproductive allocation at different ages, and tradeoffs between the metabolic costs of food processing and longevity." @default.
- W2000301641 created "2016-06-24" @default.
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- W2000301641 date "2004-12-01" @default.
- W2000301641 modified "2023-09-23" @default.
- W2000301641 title "Allocation of food gains to storage versus growth in a variable environment" @default.
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- W2000301641 doi "https://doi.org/10.1016/j.ics.2004.08.079" @default.
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