Fig. 3
From: Trematode diversity reflecting the community structure of Danish freshwater systems: molecular clues
Graphical presentation of infected snail species and their interconnection through the trematode fauna in the investigated Danish freshwater lakes. Note:trematode species associated with particular hosts are indicated. Each circle represents one host snail species, with the area of each circle corresponding to the total number of snails sampled during the study. The thickness of the lines is proportional to the number of trematode species utilizing each snail species