Table 3 Seasonal variation of prevalence in three lakes (Bagsværd sø, Furesø and Esrum sø)
From: Trematode diversity reflecting the community structure of Danish freshwater systems: molecular clues
Infection level | Sampling dates | χ2 (P) | ||||||
|---|---|---|---|---|---|---|---|---|
March | April | May | June | July | August | September | ||
Number of snails examined | 119 | 544 | 191 | 203 | 900 | 432 | 386 | Â |
Number of snails infected | 2 | 76 | 5 | 33 | 93 | 117 | 189 | Â |
Prevalence of infection (%) | 1.68 | 14.0 | 2.62 | 16.26 | 10.33 | 27.08 | 48.96 | 93.66 (< 0.001) |