### Abstract

Natural selection was studied in the context of density-dependent population growth using a single locus, continuous time model for the rates of change of population size and allele frequency. The maximization principle of density-dependent selection was applied to a class of fitness expressions with explicit recruitment and mortality terms. Three general results were obtained: First, at low population densities, the genetic basis of selection is the difference between the mean recruitment rate and the mean mortality rate. Second, at densities much higher than the equilibrium population size, selection is expected to act to minimize the mean mortality rate. Third, as the population approaches its equilibrium density, selection is predicted to maximize the ratio of the mean recruitment rate to the mean mortality rate.

Original language | English (US) |
---|---|

Pages (from-to) | 1029-1040 |

Number of pages | 12 |

Journal | Genetics |

Volume | 105 |

Issue number | 4 |

State | Published - 1983 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Genetics
- Genetics(clinical)

### Cite this

*Genetics*,

*105*(4), 1029-1040.

**Natural selection and density-dependent population growth.** / Desharnais, R. A.; Costantino, Robert F.

Research output: Contribution to journal › Article

*Genetics*, vol. 105, no. 4, pp. 1029-1040.

}

TY - JOUR

T1 - Natural selection and density-dependent population growth

AU - Desharnais, R. A.

AU - Costantino, Robert F

PY - 1983

Y1 - 1983

N2 - Natural selection was studied in the context of density-dependent population growth using a single locus, continuous time model for the rates of change of population size and allele frequency. The maximization principle of density-dependent selection was applied to a class of fitness expressions with explicit recruitment and mortality terms. Three general results were obtained: First, at low population densities, the genetic basis of selection is the difference between the mean recruitment rate and the mean mortality rate. Second, at densities much higher than the equilibrium population size, selection is expected to act to minimize the mean mortality rate. Third, as the population approaches its equilibrium density, selection is predicted to maximize the ratio of the mean recruitment rate to the mean mortality rate.

AB - Natural selection was studied in the context of density-dependent population growth using a single locus, continuous time model for the rates of change of population size and allele frequency. The maximization principle of density-dependent selection was applied to a class of fitness expressions with explicit recruitment and mortality terms. Three general results were obtained: First, at low population densities, the genetic basis of selection is the difference between the mean recruitment rate and the mean mortality rate. Second, at densities much higher than the equilibrium population size, selection is expected to act to minimize the mean mortality rate. Third, as the population approaches its equilibrium density, selection is predicted to maximize the ratio of the mean recruitment rate to the mean mortality rate.

UR - http://www.scopus.com/inward/record.url?scp=0021025452&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0021025452&partnerID=8YFLogxK

M3 - Article

C2 - 17246177

AN - SCOPUS:0021025452

VL - 105

SP - 1029

EP - 1040

JO - Genetics

JF - Genetics

SN - 0016-6731

IS - 4

ER -