Results 41 to 50 of about 3,891,523 (334)

Effective Population Size in a Continuously Distributed Population [PDF]

open access: yesEvolution, 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

A new reference genome assembly for the microcrustacean Daphnia pulex [PDF]

open access: yes, 2017
Comparing genomes of closely related genotypes from populations with distinct demographic histories can help reveal the impact of effective population size on genome evolution. For this purpose, we present a high quality genome assembly of Daphnia pulex (
Ackerman, Matthew S   +12 more
core   +3 more sources

Understanding past population dynamics: Bayesian coalescent-based modeling with covariates [PDF]

open access: yes, 2016
Effective population size characterizes the genetic variability in a population and is a parameter of paramount importance in population genetics. Kingman's coalescent process enables inference of past population dynamics directly from molecular sequence
Bennett, Shannon N.   +4 more
core   +2 more sources

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

open access: yesEvolution, 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.
openaire   +2 more sources

Finite-Size Scaling of a First-Order Dynamical Phase Transition: Adaptive Population Dynamics and an Effective Model [PDF]

open access: yes, 2017
We analyze large deviations of the time-averaged activity in the one dimensional Fredrickson-Andersen model, both numerically and analytically. The model exhibits a dynamical phase transition, which appears as a singularity in the large deviation ...
Jack, Robert L.   +2 more
core   +2 more sources

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

open access: yesGenetics, 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   +4 more
openaire   +2 more sources

Population genomics of American mink using genotype data

open access: yesFrontiers in Genetics, 2023
Understanding the genetic structure of the target population is critically important to develop an efficient genomic selection program in domestic animals.
Guoyu Hu   +8 more
doaj   +1 more source

Horseshoe-based Bayesian nonparametric estimation of effective population size trajectories

open access: yes, 2019
Phylodynamics is an area of population genetics that uses genetic sequence data to estimate past population dynamics. Modern state-of-the-art Bayesian nonparametric methods for recovering population size trajectories of unknown form use either change ...
Carpenter B.   +8 more
core   +1 more source

Quantifying whether different demographic models produce incongruent results on population dynamics of two long-term studied rodent species [PDF]

open access: yes, 2017
1. Population density (ind/ha) of long-term (>15 years) series of CMR populations, using distinct demographic models designed for both open and closed populations, were analysed for two sympatric species of rodents (Myodes glareolus and ...
Amori, Giovanni   +3 more
core   +2 more sources

Variance effective population size is affected by census size in sub‐structured populations

open access: yesMolecular 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

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