Figure 3.

Population genetic analysis of Megalobrama species. (A) Gene flow analysis of Megalobrama species. Arrows indicate migration events that occur between populations. The heat map indicates migration weight. (B) Nucleotide polymorphism (π), and differentiation index (Fst) of the four Megalobrama species. The largest circle represents the large π value, and the longer line segment represents the large Fst value. MH refers to M. hoffmanni, MA to M. amblycephala, MS to M. skolkovii, MP to M. pellegrini. (C) Decay of linkage disequilibrium (LD) patterns for the four Megalobrama species inferred by the phylogenetic trees.