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Table 2 Changes in electrolytes levels in the gill and liver of Heteroclarias exposed to varying concentrations of POME for 28 days

From: Haemato-biochemical and ionic regulatory responses of the hybrid catfish, Heteroclarias, to sublethal concentrations of palm oil mill effluents

Concentration (mg/l) of POME Tissue
Gill Liver
Electrolyte (mmol/l)
Ca2+ K+ Mg2+ Na+ Ca2+ K+ Mg2+ Na+
0.00 2.22 ± 0.45a 6.50 ± 0.19a 3.77 ± 0.47a 66.67 ± 1.01a 0.48 ± 0.05a 10.03 ± 0.16a 1.37 ± 0.13a 55.00 ± 2.36a
4.00 3.34 ± 0.07ab 7.00 ± 0.19ab 5.47 ± 0.24b 82.33 ± 0.67b 0.71 ± 0.02b 10.63 ± 0.25a 1.78 ± 0.15ab 58.33 ± 1.79a
8.00 3.61 ± 0.07b 7.37 ± 0.19b 6.33 ± 0.45b 85.00 ± 1.00b 0.80 ± 0.03b 11.03 ± 0.26a 1.93 ± 0.14ab 72.00 ± 6.03ab
12.00 3.95 ± 0.05b 9.00 ± 0.83c 7.90 ± 0.60c 94.67 ± 1.00c 0.86 ± 0.02bc 12.73 ± 0.63ab 2.13 ± 0.14b 76.33 ± 6.46ab
  1. Values are means ± SD of 3 replicates. Values along the same column with different superscript are significantly (P < 0.05) different
  2. Ca2+ calcium, K+ potassium, Mg2+ magnesium, Na+ sodium