Table 3.
Muscle concentration (μgg-1) in three indicator fish species, predators and non-predators, from heavily (HC) and lightly contaminated (LC) localities (effect of age subtracted).
| Fish species | Locality contamination | N | Mean | Median | Minimum | Maximum | Std.Dev. | Mann-Whitney U test |
|---|---|---|---|---|---|---|---|---|
| PERCH | HC | 86 | 0.152 | 0.043 | -0.842 | 3.941 | 0.647 | U = 351 |
| LC | 32 | -0.407 | -0.370 | -0.820 | -0.038 | 0.213 | P < 0.001 | |
|
| ||||||||
| CHUB | HC | 84 | 0.142 | -0.100 | -0.365 | 2.564 | 0.554 | U = 110 |
| LC | 29 | -0.412 | -0.432 | -0.558 | -0.069 | 0.127 | P < 0.001 | |
|
| ||||||||
| ROACH | HC | 104 | 0.062 | 0.014 | -0.207 | 1.180 | 0.198 | U = 54.5 |
| LC | 32 | -0.200 | -0.192 | -0.308 | -0.094 | 0.042 | P < 0.001 | |
|
| ||||||||
| PREDATOR | HC | 188 | 0.107 | 0.060 | -0.842 | 3.941 | 0.481 | U = 705 |
| LC | 48 | -0.417 | -0.370 | -1.030 | -0.038 | 0.202 | P < 0.001 | |
|
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| NO PREDATOR | HC | 348 | 0.087 | 0.012 | -0.558 | 2.564 | 0.352 | U = 3627.5 |
| LC | 115 | -0.264 | -0.228 | -0.558 | 0.024 | 0.140 | P < 0.001 | |