The risk of extinction - the mutational meltdown or the overpopulation

Details The risk of extinction - the mutational meltdown or the overpopulation The risk of extinction - the mutational meltdown or the overpopulation

2006-07-25

arxiv.org/abs/q-bio/0607045v1

Theory Biosci. 125 (2007) 147

Biology

Quantitative Biology

Populations and Evolution

RevTex4, 5 pages, 4 figures (8 eps files)

Scientific paper

10.1016/j.thbio.2006.08.001

The phase diagrams survival-extinction for the Penna model with parameters: (mutations rate)-(birth rate), (mutation rate)-(harmful mutations threshold), (harmful mutation threshold)-(minimal reproduction age) are presented. The extinction phase may be caused by either mutational meltdown or overpopulation. When the Verhulst factor is responsible for removing only newly born babies and does not act on adults the overpopulation is avoided and only genetic factors may lead to species extinction.

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