Two interesting papers questioning previous methods have been published.
Open access Mitochondrial DNA is unsuitable to test for isolation by distance, by Teske et al. Scientific Reports (2018) 8:8448.
Abstract (emphasis mine):
Tests for isolation by distance (IBD) are the most commonly used method of assessing spatial genetic structure. Many studies have exclusively used mitochondrial DNA (mtDNA) sequences to test for IBD, but this marker is often in conflict with multilocus markers. Here, we report a review of the literature on IBD, with the aims of determining (a) whether significant IBD is primarily a result of lumping spatially discrete
… Read the rest “Mitochondrial DNA unsuitable to test for IBD, and undersampling genomes show biased time and rate estimates”
New interesting article at PNAS: Estimating mobility using sparse data: Application to human genetic variation, by Loog et al (2017).
Download links and supplemental information.
Migratory activity is a critical factor in shaping processes of biological and cultural change through time. We introduce a method to estimate changes in underlying migratory activity that can be applied to genetic, morphological, or cultural data and is well-suited to samples that are sparsely distributed in space and through time. By applying this method to ancient genome data, we infer a number of changes in human mobility in Western Eurasia, including
… Read the rest “Holocene rise in mobility in at least three stages: Strong link between technological change and human mobility in Western Eurasia”