Table 3.
Integrated biomarker response (IBR) of African catfish exposed with varying levels of salinity and heat stress
| Median | Mean | SD | Min | Max | |
|---|---|---|---|---|---|
| Before heat stress | |||||
| 0 ppt | 0.66 d | 0.66 | 0.11 | 0.40 | 0.92 |
| 4 ppt | 1.47 c | 1.47 | 0.23 | 1.22 | 1.71 |
| 8 ppt | 1.85 b | 1.85 | 0.19 | 1.58 | 2.11 |
| 12 ppt | 3.03 a | 3.03 | 0.21 | 2.16 | 3.89 |
| After heat stress | |||||
| 0 ppt | 1.34 D* | 1.34 | 0.11 | 1.02 | 1.65 |
| 4 ppt | 2.37 C* | 2.37 | 0.23 | 2.05 | 2.68 |
| 8 ppt | 3.74 B* | 3.74 | 0.19 | 3.21 | 4.26 |
| 12 ppt | 5.06 A* | 5.06 | 0.21 | 3.89 | 6.22 |
| Two-way ANOVA (p-value) | |||||
| Salinity | 0.001 | - | - | - | - |
| Heat stress | 0.001 | - | - | - | - |
| Interaction | 0.001 | - | - | - | - |
Means ± S.E. in the same column with different small or capital letters differ significantly either before or after the heat stress (p < 0.05). The asterisk (*) refers to significant differences between the same groups before and after heat stress (p < 0.05)