A solvable senescence model showing a mortality plateau
arXiv:cond-mat/0206579 · doi:10.1103/PhysRevLett.89.288103
Abstract
We present some analytic results for the steady states of the Penna model of sen escence, generalised to allow genetically identical individuals to die at differ ent ages via an arbitrary survival function. Modelling this with a Fermi functio n (of modest width) we obtain a clear mortality plateau late in life: something that has so far eluded explanation within such mutation accumulation models. This suggests that factors causing variable mortality withi n genetically identical subpopulations, which include environmental effects, may be essential to understanding the mortality plateau seen in many real species.
4 pages
References in corpus (1)
Cited by in corpus (11)
- Sympatric speciation in an age-structured population living on a lattice
- Analytical solution of a generalized Penna model
- Gompertz mortality law and scaling behaviour of the Penna model
- Simulations of a mortality plateau in the sexual Penna model for biological ageing
- Solvable senescence model with positive mutations
- Consequences of increased longevity for wealth, fertility, and population growth
- Positive mutations and mutation-dependent Verhulst factor in Penna ageing model
- Population Dynamics in the Penna Model
- Live Young, Die Later: Senescence in the Penna Model of Aging
- Mathematical link of evolving aging and complexity
- Computer Simulations to Study Sympatric Speciation Processes