Fig. 3

Assignment of 1424 larvae of Trichinella britovi on the basis of genotypic variation as determined by STRUCTURE. Parasites originated from the Mediterranean islands of Corsica (four localities) and Sardinia, and continental Italy, France and Spain. Larvae were analyzed independently, but are grouped for the purposes of display according to geographical origin. The analysis was performed assuming K = 2–10, assuming “admixture” as ancestry model, and “independent frequencies” as allele frequency model. Simulations were performed with a burn-in of 200,000 and 100,000 Markov Chain Monte Carlo iterations. Each individual larva is represented by its Q % of membership pattern (see Table 1 for isolate numbers)