Table 2.
Diversity and abundance of freshwater snails of Lake Tana and its tributary rivers, 2021/22.
| Collection sites | Freshwater snail Genus observed in the study area | |||||
|---|---|---|---|---|---|---|
| Biomphalaria snails No. (%) | Bulinus snails No. (%) | Lymnaea snails No. (%) | Melanoides snails No. (%) | Bellamya snails No. (%) | Total No. (%) | |
| Cherechera | 194 (12.1) | 87 (19.6) | 40 (3.0) | 139 (70.2) | 71 (23.0) | 531 (13.70) |
| Dek Island | 173 (10.8) | 119 (26.8) | 151 (11.4) | 0 | 34 (11.0) | 477 (12.3) |
| Zegie Peninsula | 99 (6.2) | 65 (14.6) | 63 (4.7) | 37 (18.7) | 76 (24.6) | 340 (8.7) |
| Qunzela town | 98 (6.1) | 68 (15.3) | 173 (13.0) | 9 (4.6) | 58 (18.8) | 406 (10.5) |
| Gorgora Peninsula | 0 | 17 (3.8) | 56 (4.2) | 0 | 38 (12.3) | 111 (2.8) |
| Enferanze river | 128 (7.9) | 45 (10.1) | 168 (12.6) | 12 (6.1) | 32 (10.4) | 385 (9.9) |
| Shinie river | 374 (23.3) | 0 | 240 (18.1) | 0 | 0 | 614 (15.8) |
| Robit river | 240 (14.9) | 42 (9.5) | 319 (24.0) | 0 | 0 | 601 (15.5) |
| Gumara river | 162 (10.1) | 1 (0.23) | 60 (4.5) | 0 | 0 | 223 (5.7) |
| Garno river | 138 (8.6) | 0 | 59 (4.4) | 1 (0.5) | 0 | 198 (5.1) |
| All sites | 1606 (41.33) | 444 (11.43) | 1329 (34.20) | 198 (5.10) | 309 (7.94) | 3886 (100) |