Evol Ecol Res 7: 795-799 (2005)     Full PDF if your library subscribes.

Mammal life-history evolution with size-dependent mortality

Eric L. Charnov*

Department of Biology, The University of New Mexico, Albuquerque, NM 87131-0001, USA

e-mail: rlc@unm.edu


Question: What is the effect of within-species size dependence of mortality on the between-species allometries for maturation and adult life span?

Mathematical methods: Optimization of net-reproductive rate, R0, with respect to adult mass, mα.

Key assumptions: Instantaneous mortality at age x, size mx, is proportional to mxh, and this assumption is added to the Charnov (2001) mammal life-history model.

Results: h in the range of zero to 0.20 has a very small (≈ 10–15%) effect on the heights of the allometries.

Keywords: allometry, life span, maturation, optimization, sensitivity analysis.

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