Research Article
Branchial Chamber and Gastrointestinal Tracts Parasites of Fish Species in Benue and Niger Rivers, North Central, Nigeria
Table 1
Prevalence of parasites of fish species in rivers Niger and Benue at Lokoja.
| Fish species | Number examined | Number positive (%) | Number negative (%) | Chi-square | df | value |
| Clarias sp. | 120 | 96 (80.0) | 24 (20.0) | 85.560 | 4 | <0.001 | Tilapia zillii | 85 | 81 (95.3) | 4 (4.7) | Oreochromis niloticus | 97 | 87 (89.7) | 10 (10.3) | Synodontis schall | 68 | 48 (70.6) | 20 (29.4) | Megalops atlanticus | 70 | 27 (38.6) | 43 (61.4) | Total | 440 | 339 (77.0) | 101 (23.0) |
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