Phylogeography: F-statistics & Population Structure

Introduction to F-statistics: FST = 1 - [(1 - FIT) / (1 - FIS)]
    Draw-&-Replacement experiments with alleles
    Observed vs Expected Heterozygosity over multiple Populations
    Structure of differences over different hierarchical levels
    FST as an estimator of Nem in an island model
    FST / (1 - FST) as a measure of genetic differentiation versus geographical distance in Sea Lions (Zalophus californianus)
   
FST as a measure of genetic differentiation versus geographical distance in Humans

Two examples from terrestrial & marine populations of Newfoundland

Ex.: Genetic tests of alternative hypothesis of breeding structure in Harp Seals, Pagophilus groenlandicus [Carr et al. 2015]

       Fig. 1    - Distribution of Harp Seal breeding grounds 
       Fig. 3    - Maximum Likelihood tree of Harp Seal relationships      

                      Fig. 4 - Time-linearized Maximum-Likelihood tree     
       Table 2 - Pairwise AMOVA among four populations

      Table 3 -  AMOVA among multi-population models

        Fig. 9  - Demographic histories of breeding grounds.
       Fig. 7 - Monte Carlo test of dispersal phylogeography: theory
                      Fig. 8 - Monte Carlo test - observed dispersal

Ex.: Genetic structure of an island subspecies of caribou, Rangifer tarandus terranovae [Wilkerson, Mahoney, & Carr 2018]
        [Editor's Choice for August 2018 "Genome"] 
 
        Fig. 1    - Phylogenetic relationships of Newfoundland Caribou       
         Fig. 4    - Geographic Distribution of Newfoundland Caribou
         Table 2 - Genetic variation by Clade     
        
Fig. 5    - Genetic models of herd organization across WMUs
         Fig. 3    - Clade structure of Newfoundland & mainland caribou       


Text material © 2024 by Steven M. Carr