Open Access
Table 5
Number of egg masses laid by 40 adult Anisus spirorbis in relation to different times of the experiment.
| Length of the experiment (days) | Mean number of egg masses (SD) | |
|---|---|---|
| Snails in pairs | Controls | |
| Period: | ||
| Days 1–7 | 34.7 (3.1) | 35.2 (1.9) |
| Days 8–15 | 38.4 (3.7) | 41.3 (3.5) |
| Days 16–22 | 29.4 (5.2) | 38.5 (4.2) |
| Days 23–30 | 15.1 (7.3) | 34;2 (5.3) |
| Total at day 30 | 117.6 (4.7) | 149.2 (3.7) |
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