Table 1 Egg mass deposition by B. truncatus in the presence of L. varicus snails
From: Potential of Lanistes varicus in limiting the population of Bulinus truncatus
Week | Treatment 1 | Treatment 2 | Treatment 3 | Treatment 4 | ||||
|---|---|---|---|---|---|---|---|---|
No. of live B. truncatus snails | No. of egg masses (density)a | No. of live Lv:Bt | No. of egg masses (density)a | No. of live Lv:Bt | No. of egg masses (density)a | No. of live Lv:Bt | No. of egg masses (density)a | |
1 | 40 | 724 (18.1) | 30:10 | 2 (0.2) | 20:20 | 3 (0.2) | 10:30 | 2 (0.2) |
2 | 40 | 647 (16.2) | 30:10 | 0 (0.0) | 20:20 | 3 (0.2) | 10:28 | 4 (0.5) |
3 | 40 | 819 (20.5) | 30:10 | 0 (0.0) | 20:20 | 3 (0.2) | 10:28 | 4 (0.1) |
4 | 38 | 695 (18.3) | 29:9 | 1 (0.1) | 20:19 | 0 (0.0) | 10: 28 | 4 (0.2) |
5 | 38 | 611 (16.1) | 29:8 | 1 (0.1) | 20:19 | 1 (0.1) | 10:26 | 7 (0.3) |
6 | 38 | 652 (17.2) | 29:8 | 0 (0.0) | 20:19 | 0 (0.0) | 10:26 | 3 (0.3) |
7 | 38 | 595 (15.7) | 29:7 | 0 (0.0) | 20:15 | 2 (0.1) | 10:26 | 2 (0.1) |
8 | 38 | 407 (10.7) | 29:7 | 2 (0.3) | 20:13 | 8 (0.6) | 10:26 | 1 (0.3) |
9 | 37 | 462 (12.5) | 28:5 | 0 (0.0) | 20:10 | 0 (0.0) | 10:24 | 0 (0.4) |
10 | 37 | 418 (11.3) | 28:5 | 0 (0.0) | 20:8 | 2 (0.3) | 10:23 | 9 (0.3) |
11 | 35 | 483 (13.8) | 28:3 | 0 (0.0) | 20:7 | 0 (0.0) | 10:20 | 84 (4.2) |
12 | 34 | 420 (12.4) | 28:3 | 0 (0.0) | 20:7 | 2 (0.3) | 10:20 | 13 (0.7) |
Total | 453 | 6933 (15.3) | 347:85 | 6 (0.7) | 240:177 | 24 (1.8) | 100:305 | 133 (6.2) |