Figure 2

The effect of Fasciola hepatica infection on the size of Lymnaea fuscus , L. palustris and Galba truncatula . The data are expressed as mean shell sizes of groups 1–2 mm for L. fuscus and L. palustris (measured at day 95 PE) and groups 1–2 mm (white) and ≥2-4 mm (grey) for G. truncatula (measured at day 65 PE). The horizontal line inside each box represents the arithmetic mean of each group; whiskers are standard deviations. Abbreviations: IS, infected snails (cercarial shedding or no cercarial shedding); EUS, snails exposed but uninfected; Neg, negative controls.