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Table 2.
Number of Lymnaea glabra infected by each digenean species and prevalence of natural infection in five types of habitats located in the southern part of the Brenne Regional Natural Park, department of Indre, central France. n, total number of adult snails collected during the 2 years of study.
| Parasite species | Number of infected snails (prevalence in %) |
|||||
|---|---|---|---|---|---|---|
| Drainage furrows (n: 3655) | Road ditches (n: 8491) | Pools (n: 2800) | Pond banks (n: 3045) | Brooks (n: 2256) | All sites (n: 17,647) | |
| Calicophoron daubneyi | 51 (1.3) | 24 (0.2) | 7 (0.2) | 0 | 0 | 82 (0.4) |
| Echinostoma revolutum | 0 | 0 | 0 | 2 (0.06) | 0 | 2 (0.01) |
| Fasciola hepatica | 71 (1.9) | 43 (0.5) | 2 (0.07) | 1 (0.03) | 0 | 117 (0.6) |
| Haplometra cylindracea | 7 (0.1) | 0 | 19 (0.6) | 0 | 5 (0.2) | 31 (0.1) |
| Notocotylus sp. | 1 (0.02) | 2 (0.02) | 3 (0.1) | 2 (0.06) | 1 (0.04) | 9 (0.05) |
| Opisthoglyphe ranae | 0 | 0 | 11 (0.3) | 32 (1.0) | 0 | 43 (0.2) |
| Plagiorchis sp. | 0 | 0 | 0 | 3 (0.09) | 0 | 3 (0.01) |
| Immature infections | ||||||
| with rediae | 2 (0.04) | 0 | 0 | 2 (0.06) | 2 (0.08) | 6 (0.03) |
| with sporocysts | 9 (0.2) | 2 (0.02) | 7 (0.2) | 5 (1.6) | 2 (0.08) | 25 (0.1) |
| Xiphidiocercariae (unidentified species) | 0 | 0 | 0 | 2 (0.06) | 1 (0.04) | 3 (0.01) |
| Total number of infected snails (prevalence in %) | 141 (3.8) | 71 (0.08) | 49 (1.7) | 49 (1.6) | 11 (0.4) | 321 (1.8) |
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