Table 1 Reproduction of juvenile snails with different densities of breeding for 1 year in the field
Juvenile snails (male: female ratio of 1) with different densities (snails/0.16 m2) | Group I | Group II | ||||
|---|---|---|---|---|---|---|
| Â | No. snails collected | No. living snails | Reproduction (%) | No. snails collected | No. living snails | Reproduction (%) |
2 | 2 | 1 | -50 | 1 | 1 | -50 |
4 | 3 | 3 | -25 | 3 | 1 | -75 |
8 | 30 | 21 | 162.5 | 35 | 27 | 237.5 |
16 | 49 | 43 | 168.8 | 51 | 47 | 193.8 |
32 | 58 | 51 | 59.4 | 63 | 56 | 75 |
64 | 118 | 108 | 68.8 | 121 | 110 | 71.9 |
128 | 229 | 197 | 53.9 | 243 | 201 | 57 |