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Fig. 1.
Strongyluris sp. L3. a Complete worm (SEM). b Anterior extremity (LM) showing faringe and faringeal bulb (see arrow). c Anterior extremity, apical view (SEM). d Posterior extremity (SEM)
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