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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