Open Access
Table 1
Snail investigations performed for 37 years (1970–2006) in the department of Haute Vienne with indication of their purpose and the number of water points investigated.
| Purpose of investigations | Stations | Number of water points investigated |
|---|---|---|
| Detection of snail habitats in 234 farms with a problem of animal fasciolosis | Grasslands and their vicinity (road ditches, ponds, streams, rivers) | 7831 |
| Experimental transplantations of snails in other 25 farms | Grasslands only | 624 |
| Mapping of snail populations in 106 municipalities in northern Haute Vienne | Mainly road ditches, ponds, streams and rivers | 3606 |
| Other investigations: | ||
| Wild watercress beds at the origin of human fasciolosis cases | Small ponds, man-made basins | 252 |
| The Vienne river and its main tributaries | River banks | 464 |
| Other ponds and streams | Pond and stream banks | 701 |
| Total | – | 13 478 |
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