Stability in a population model without random deaths by the Verhulst factor

Details Stability in a population model without random deaths by the Verhulst factor Stability in a population model without random deaths by the Verhulst factor

2010-07-28

arxiv.org/abs/1007.4933v3

Biology

Quantitative Biology

Populations and Evolution

Scientific paper

A large amount of population models use the concept of a carrying capacity. Simulated populations are bounded by invoking finite resources through a survival probability, commonly referred to as the Verhulst factor. The fact, however, that resources are not easily accounted for in actual biological systems makes the carrying capacity parameter ill-defined. Henceforth, we deem it essential to consider cases for which the parameter is unnecessary. This work demonstrates the possibility of Verhulst-free steady states using the Penna aging model, with one semelparous birth per adult. Stable populations are obtained by setting a mutation threshold that is higher than the reproduction age.

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