Research Article
Branchial Chamber and Gastrointestinal Tracts Parasites of Fish Species in Benue and Niger Rivers, North Central, Nigeria
Table 7
Comparison of prevalence of parasites from different locations at rivers Niger and Benue, Lokoja.
| | Fish species | Chintaco (downstream of the confluence) | Irenedu (River Niger) | Mozum (River Benue) | Total | | Number examined | Number positive (%) | Number examined | Number positive (%) | Number examined | Number positive (%) | Number examined | Number positive (%) |
| | Clarias sp. | 43 | 35 (81.4) | 37 | 33 (89.2) | 40 | 28 (70.0) | 120 | 96 (80.0) | | Tilapia zillii | 28 | 27 (96.4) | 26 | 24 (92.3) | 31 | 30 (96.8) | 85 | 81 (95.3) | | Oreochromis niloticus | 33 | 29 (87.9) | 30 | 27 (90.0) | 34 | 31 (91.2) | 97 | 87 (89.7) | | Synodontis schall | 22 | 12 (54.5) | 26 | 19 (73.1) | 20 | 17 (85.0) | 68 | 48 (70.6) | | Megalops atlanticus | 27 | 10 (37.0) | 23 | 8 (34.8) | 20 | 9 (45.0) | 70 | 27 (38.6) | | Total | 153 | 113 (73.9) | 142 | 111 (78.2) | 145 | 115 (79.3) | 440 | 339 (77.0) | | Chi-square | 35.220 | 33.905 | 25.535 | 85.560 | | df | 4 | 4 | 4 | 4 | | value | 0.000 | 0.000 | 0.000 | 0.000 |
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