In line with indications of a recent population expansion [ 17], this suggests a stronger bottleneck and a more dramatic population growth from the bottlenecked population in the pied flycatcher (ie. smaller refugial populations but significant recent population growth), during re-colonization of Northern Europe subsequent to the retrieval of the ice cover from the latest Pleistocene glaciations.
Data indicate that the bog turtle suffered dramatic reductions in numbers – a population bottleneck – as colonies were forced south in the face of glaciation.
However, more dramatic population history effects in other species (e.g., a bottleneck) may reduce variation at repeats of all sizes, including the two-unit monitors and, thus, might reduce the statistical power of detecting differences in slippage rates as inferred from polymorphism prevalence at repeat loci.
The last polyploidization event resulting in the origin of hexaploid bread wheat approximately 8,000-10,000 8,000-10,000 years agoic impact on thadlevel of genetic diversity in the D-genome [ 19, 75] suggestive of strong population bottleneck.
These two species represent a recent and rapid dramatic shift in genomic characteristics, including a mating system transition, a reduction in genetic diversity and effective population size following a population bottleneck, and recent widespread expansion in geographic range.
Case study of a population bottleneck: lions of the Ngorongoro crater.
"Dominance of Deleterious Alleles Controls the Response to a Population Bottleneck". PLoS Genetics 11 (8): e1105436.
Sundell, T., Heger, M., Kammonen, J. & Onkamo, P. Modelling a Neolithic population bottleneck in Finland: a genetic simulation.
They find 11 significant loci, some with signatures of positive selection, and evidence for a population bottleneck beginning around 15,000 years ago.
The similarity in linkage disequilibrium observed here suggests that a relative weak population bottleneck might have occurred during dog domestication.
