Results 21 to 30 of about 14,786,969 (255)

On the Meaning and Existence of an Effective Population Size [PDF]

Genetics, 2005
Abstract We investigate conditions under which a model with stochastic demography or population structure converges to the coalescent with a linear change in timescale. We argue that this is a necessary condition for the existence of a meaningful effective population size.
P, Sjödin, I, Kaj, S, Krone, M, Lascoux, M, Nordborg   +4 more
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Effective Population Size in a Continuously Distributed Population [PDF]

Evolution, 1995
An individual-based simulation model was created to examine genetic variability, time until fixation and spatial genetic structure in a continuously distributed population. Previous mathematical models for continuously distributed populations have the difficulty that the assumption of independent reproduction and independent dispersal of offspring ...
openaire   +2 more sources

POPULATION STRUCTURE AND EFFECTIVE SIZE OF A LIZARD POPULATION [PDF]

Evolution, 1965
Sewall Wright, R. A. Fisher, and others have shown the influence of population size on the fluctuation in gene frequencies but have disagreed on the explanation for it. The ratio of the effective population number to the actual number is a measure of the extent to which parents make unequal contributions to succeeding generations.
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Extensions of the Coalescent Effective Population Size [PDF]

Genetics, 2009
Abstract We suggest two extensions of the coalescent effective population size of Sjödin  et al. (2005) and make a third, practical point. First, to bolster its relevance to data and allow comparisons between models, the coalescent effective size should be recast as a kind of mutation effective size.
John, Wakeley, Ori, Sargsyan
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Prediction and estimation of effective population size [PDF]

Heredity, 2016
Effective population size (Ne) is a key parameter in population genetics. It has important applications in evolutionary biology, conservation genetics and plant and animal breeding, because it measures the rates of genetic drift and inbreeding and affects the efficacy of systematic evolutionary forces, such as mutation, selection and migration.
Wang, J, Santiago, E, Caballero, A
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Variance effective population size is affected by census size in sub‐structured populations

Molecular Ecology Resources, 2023
AbstractMeasurement of allele frequency shifts between temporally spaced samples has long been used for assessment of effective population size (Ne), and this ‘temporal method’ provides estimates of Ne referred to as variance effective size (NeV). We show that NeV of a local population that belongs to a sub‐structured population (a metapopulation) is ...
Nils Ryman, Linda Laikre, Ola Hössjer
openaire   +2 more sources

Linking individual phenotype to density-dependent population growth: the influence of body size on the population dynamics of malaria vectors [PDF]

, 2011
Understanding the endogenous factors that drive the population dynamics of malaria mosquitoes will facilitate more accurate predictions about vector control effectiveness and our ability to destabilize the growth of either low- or high-density insect ...
Killeen, G.F., Knols, B.G.J., Heather M. Ferguson, Knols, Bart G. J., Dickson W. Lwetoijera, Lwetoijera, D.W., Lwetoijera, Dickson W., Killeen, Gerry, Killeen, Gerry F, Takken, W., Ferguson, Heather M., Ferguson, H.M., Gerry F. Killeen, Lwetoijera, Dickson W, Takken, Willem, Ferguson, H. M., Tanya L. Russell, Lwetoijera, D. W., Knols, Bart G.J., Killeen, Gerry F., Russell, T.L., Russell, Tanya L, Russell, Tanya L., Knols, B. G. J., Bart G. J. Knols, Knols, Bart G J, Willem Takken, Ferguson, Heather M   +27 more
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Effective Population Size and Population Subdivision in Demographically Structured Populations [PDF]

Genetics, 2002
Abstract A fast-timescale approximation is applied to the coalescent process in a single population, which is demographically structured by sex and/or age. This provides a general expression for the probability that a pair of alleles sampled from the population coalesce in the previous time interval.
Valérie, Laporte, Brian, Charlesworth
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Population Briefs, Vol. 20, no. 1 [PDF]

, 2014
IN THIS ISSUE: “Anything can happen anytime”: Perceived lack of safety among girls in South Africa | Expanding contraceptive options for breastfeeding women: Introduction of the progesterone contraceptive vaginal ring | Reducing unmet need for ...
Population Council
core   +1 more source

The effect of neighborhood size on effective population size in theory and in practice [PDF]

Heredity, 2016
The distinction between the effective size of a population (Ne) and the effective size of its neighborhoods (Nn) has sometimes become blurred. Ne reflects the effect of random sampling on the genetic composition of a population of size N, whereas Nn is a measure of within-population spatial genetic structure and depends strongly on the dispersal ...
openaire   +4 more sources