Fig. 4From: Persistent establishment of a tropical disease in Europe: the preadaptation of schistosomes to overwinterSurvival curves of B. truncatus snails from temperate strains, Corsica (a) and Spain (b), infected with S. haematobium (S.h-b) from Corsica and from Cameroon (S.h) and maintained at four different temperatures. Key: 4 °C, yellow curve; 8 °C, orange curve; 16 °C, blue curve; 24 °C, green curveBack to article page