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Table 6.
A comparative characteristic of the morphology of cercariae D. loossi, D. anatinarum and D. pulverulenta (sizes in mm).
| Trait – Cercaria | D. loossi (our data) | D. anatinarum (by Leite et al., 1982) | D. pulverulenta (by Khalifa, 1976) |
|---|---|---|---|
| Body length | 0.220–0.246 | 0.169–0.207 | 0.174–0.243 |
| Body width | 0.063–0.078 | 0.09–0.016 | – |
| Tail length | 0.260–0.370 | 0.180–0.219 | 0.225–0.371 |
| Furca length | 0.126–0.146 | 0.53–0.74 | 0.118–0.266 |
| Anterior organ | 0.070–0.082 × 0.046–0.052 | 0.058–0.080 × 0.037–0.049 | 0.085–0.089 × 0.052–0.055 |
| Ventral sucker | 0.032–0.034 × 0.028–0.030 | 0.019–0.027 × 0.021–0.030 | 0.034 × 0.027 |
| Cuticular arming | available | available | available |
| Formula of excretory system | 2[(1 + 1+1) + (3 + 1)] = 14 | 2[(1 + 1+1) + (2 + 1)] = 12 | 2[(1 + 1+1) + (3 + 1)] = 14 |
| N of penetration glands | 5 pairs | 5 pairs | 5 pairs |
| Eyes | 2 | 2 | 2 |
| Intermediate hosts (Planorbidae) | Anisus spirorbis | Biomphalaria straminea | Planorbis planorbis Anisus spirorbis |
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