Fig. 5

Principal component analysis of Trichinella britovi larval cohorts. Parasites derived from 63 animals (domestic pigs, wild boar, wolves, red foxes and meat products). a Coordinate 1 vs coordinate 2. Circles are drawn arbitrarily, but emphasize groupings of isolates of Corsica (Vallée de Gravona, yellow circle; Cozzano, violet circle) and Sardinia (blue circle), and of continental Europe (Italy, France and Spain). b Coordinate 1 vs coordinate 3. Circles are drawn arbitrarily, but emphasize groupings of isolates of Corsica (green circle) and Sardinia (blue circle), and of continental Europe (Italy, France and Spain) (see Table 1 for isolate numbers)