EurekaMag.com logo
+ Site Statistics
References:
53,214,146
Abstracts:
29,074,682
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Estimating gene flow in island populations






Genetical Research 67(2): 147-158

Estimating gene flow in island populations

A new method is presented for estimating the rate of gene flow into island populations using the distribution of alleles in samples from a number of islands. The pseudo maximum likelihood estimator (PMLE) that we derive may be applied to species with either discrete or continuous generation times. For Wright's discrete-generation island model, the method provides an estimate of theta = 2Nm where N is the (haploid) population size on each island and m is the fraction of individuals replaced by immigrants in each generation. For a continuous-generation island model, the corresponding parameter theta is the ratio of the immigration rate vphi to the individual birth rate lambda. Monte Carlo simulations are used to compare the statistical properties of the PMLE with those of two alternative estimators of theta derived from Wright's F-statistics. The PMLE is shown to have greatest efficiency (least mean square error) in most cases for a wide range of sample sizes and parameter values. The PMLE is applied to estimate theta using mtDNA haplotypes and allozymes for subdivided populations of African elephants and Channel Island foxes.

(PDF same-day service: $19.90)

Accession: 002831356

PMID: 8801187

DOI: 10.1017/s0016672300033607



Related references

Estimating levels of gene flow in natural populations. Genetics 99(2): 323-335, 1981

Estimating levels of gene flow between natural populations in the genus Isotomurus. Pedobiologia 41(1-3): 19-25, 1997

Mitochondrial gene genealogy and gene flow among island and mainland populations of a sedentary songbird, the grey-crowned babbler. Evolution 47(4): 1118-1137, 1993 ( ), 1994

Mitochondrial gene genealogy and gene flow among island and mainland populations of a sedentary songbird, the grey-crowned babbler (Pomatostomus temporalis). Evolution 47(4): 1118-1137, 1993

Estimating levels of gene flow between natural populations of cereal aphids (Homoptera: Aphididae). Bulletin of Entomological Research, 803: 331-338, 1990

Gene flow among island populations of marsh rice rats. Virginia Journal of Science 45(1): 3-12, 1994

Parentage versus two-generation analyses for estimating pollen-mediated gene flow in plant populations. Molecular Ecology 14(8): 2525-2537, 2005

Island populations and gene flow in the deer mouse, Peromyscus leucopus. Evolution 19(4): 480-495, 1965

Estimating the constraint that gene flow places on adaptation A comparative study of lake and stream stickleback populations. American Fisheries Society Annual Meeting 133: 41, 2003

Estimating connectivity in marine populations: an empirical evaluation of assignment tests and parentage analysis under different gene flow scenarios. Molecular Ecology 18(8): 1765-1776, 2009