Fig. 3 Haplotype-networks for a in Species status and population structure of mussels (Mollusca: Bivalvia: Mytilus spp.) in the Wadden Sea of Lower Saxony (Germany)

Fig. 3 Haplotype-networks for a COI (n haplotypes 0 15; n sequences 0 111), b VD1 (n haplotypes 0 17; n sequences 0 81), and c the combined data set (n haplotypes 0 16; n sequences 0 64). The sizes of the symbols are proportional to the number of individuals sharing that haplotypes (unique haplotypes are not included), with the rectangular haplotype having had the largest outgroup weight. Each node corresponds to one mutation step. The patterns used for the symbols match those used in the geographical distribution maps (Fig. 2)