Fig. 1

Median-joining networks of Taenia hydatigena isolates from Nigeria based on complete cox1 (a) nad1 (b) nad5 (c) and concatenated cox1-nad1-nad5 gene sequences (d). Circle sizes are proportional to the haplotype frequencies. Numbers in parentheses represent the number of mutations. Small black circles are median vectors (i.e. hypothetical haplotypes)