Human-aided dispersal has altered but not erased the phylogeography of the tench

摘要: Human-aided dispersal can result in phylogeographic patterns that do not reflect natural historical processes, particularly species prone to intentional translocations by humans. Here, we use a multiple-gene sequencing approach assess the effects of human-aided on phylogeography tench Tinca tinca, widespread Eurasian freshwater fish with long history aquaculture. Spatial genetic analysis applied sequence data from four unlinked loci and 67 geographic localities (38–382 gene copies per locus) defined two groups populations were little structured geographically but significantly differentiated each other, it identified locations major breaks, which concordant across genes driven distributions phylogroups. This pattern most reasonably reflects isolation glacial refugia subsequent range expansions, Eastern Western phylogroups remaining largely allopatric throughout range. However, this variation was also present all 17 cultured breeds studied, some at western edge native contained phylogroup. Thus, processes have played an important role structuring populations, has contributed significantly, admixed composition likely contributing introgression.