Fig. 1.

Frequency of snails examined and parasitized in each size interval
| Size S1: 0.0 – 2.9 cm; S2: 3.0 – 5.9 cm; S3: 6.0 – 8.9 cm and S4: 9 – 12 cm Prevalence (P), Mean Intensity (MI) and Mean Abundance in each size interval | Frequency | P | MI | MA |
|---|---|---|---|---|
| 1 | 56 | 0 | 0 | 0 |
| 2 | 143 | 19 | 17 | 33 |
| 3 | 126 | 24 | 41 | 10 |
| 4 | 48 | 62 | 42 | 26 |
| Total | 373 |