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Table 2
Stations investigated from 1970 to 2006 in the department of Haute Vienne and number of positive sites for Galba truncatula.
| Type of stations | Number of sites investigated | Number of sites with snails (%) | Frequency (%) |
|---|---|---|---|
| Open drainage furrows | 5232 | 3986 | 76.0 |
| Springs (meadows) | 1601 | 1176 | 73.4 |
| Open drainage ditches | 1539 | 525 | 34.1 |
| Road ditches | 2174 | 1138 | 52.3 |
| Trampled areas | 279 | 20 | 7.1 |
| Pond banks | 910 | 283 | 31.0 |
| Brooks | 903 | 184 | 20.3 |
| River banks | 840 | 95 | 11.3 |
| Totals | 13 478 | 7407 | 54.9 |
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