Figure 2

Proportions of the three developmental stages of the metacercariae of Ichthyocotylurus variegatus (A) and I. pileatus (B) in three age cohorts of perch (0+, 1+ and 2+) in Lake Konnevesi, Central Finland: recently established metacercariae (white bars), encapsulating metacercariae (light grey bars) and fully developed, encapsulated metacercariae (dark grey bars). Solid line with dots presents mean parasite abundance (± SE). Numbers on top in parentheses indicate total sample size for each month; numbers on top of each column indicate number of infected fish. Note that the data are presented separately for the sampling times in 0+ fish; data for 1+ and 2+ fish have been combined for the sampling times. Data for I. pileatus in 0+ fish are the same presented in [20].