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. 2008 Jul 10;8(7):4095–4109. doi: 10.3390/s8074095

Table 4.

Liver 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 N Mean Median Minimum Maximum Std.Dev. Mann-Whitney U test
PERCH HC 71 0.225 0.113 -0.973 2.028 0.549 U = 166
LC 32 -0.500 -0.440 -0.899 -0.075 0.210 P < 0.001

CHUB HC 82 0.182 -0.059 -0.546 3.950 0.794 U = 158
LC 29 -0.515 -0.523 -0.764 -0.209 0.168 P < 0.001

ROACH HC 91 0.123 -0.037 -0.323 2.669 0.473 U = 46
LC 32 -0.349 -0.341 -0.473 -0.239 0.062 P < 0.001

PREDATOR HC 160 0.170 0.063 -1.283 3.379 0.679 U = 830
LC 48 -0.566 -0.453 -1.846 -0.075 0.295 P < 0.001

NO PREDATOR HC 314 0.158 -0.031 -0.684 3.950 0.605 U = 2939
LC 115 -0.431 -0.369 -1.278 0.015 0.222 P < 0.001