Whole genome sequencing reveals high differentiation low levels of genetic diversity and short runs of homozygosity among Swedish wels catfish

摘要

A Native (green) and introduced (orange) distribution range of wels catfish globally, adapted from IUCN (Freyhof 2010). B The locations of the only three remaining native populations of wels catfish in Sweden (green circles), as well as of the sampled reintroduced population (orange triangle). In addition, one introduced population, not marked on the map, is present just north of the native population of Emån (not sampled in this study).