Biases in Demographic Modeling Affect Our Understanding of Recent Divergence.

ABSTRACT: Testing among competing demographic models of divergence has become an important component of evolutionary research in model and non-model organisms. However, the effect of unaccounted demographic events on model choice and parameter estimation remains largely unexplored. Using extensive simulations, we demonstrate that under realistic divergence scenarios, failure to account for population size (Ne) changes in daughter and ancestral populations leads to strong biases in divergence time estimates as well as model choice. We illustrate these issues reconstructing the recent demographic history of North Sea and Baltic Sea turbots (Scophthalmus maximus) by testing 16 isolation with migration (IM) and 16 secondary contact (SC) scenarios, modeling changes in Ne as well as the effects of linked

SUBMITTER: Momigliano P 

PROVIDER: S-EPMC8233503 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature