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Table 2 Zn,Cu,Cd,Ni and Pb concentration in livers, gills and muscle of Asian swamp eels on 4 different paddy seasons

From: Seasonal variation of heavy metals and metallothionein contents in Asian swamp eels, Monopterus albus (Zuiew, 1793) from Tumpat, Kelantan, Malaysia

Metal

Tissue

Plowing

Seedling

Growing

Harvesting

Zn

Liver

20.24 ± 2.27a

19.65 ± 1.87ab

17.30 ± 1.65bc

15.82 ± 0.92c

Gills

29.02 ± 6.51a

27.92 ± 2.10a

24.00 ± 3.42a

25.46 ± 4.28a

Muscle

11.47 ± 2.51ab

12.09 ± 1.09a

11.69 ± 1.19ab

9.14 ± 0.61b

Cu

Liver

1.75 ± 1.20ab

2.45 ± 0.78a

1.00 ± 0.85c

0.53 ± 0.31c

Gills

0.17 ± 0.09a

0.09 ± 0.01a

0.13 ± 0.11a

0.09 ± 0.07a

Muscle

0.04 ± 0.01a

0.04 ± 0.01a

0.04 ± 0.01a

0.04 ± 0.01a

Cd

Liver

0.10 ± 0.08bc

NA

0.59 ± 0.25a

0.37 ± 0.11ab

Gills

NA

NA

0.66 ± 0.60a

0.09 ± 0.07b

Muscle

NA

NA

0.16 ± 0.08a

0.08 ± 0.02b

Ni

Liver

3.71 ± 1.63a

2.09 ± 0.46ab

1.75 ± 0.76b

2.42 ± 0.65ab

Gills

15.92 ± 8.35a

9.21 ± 2.74a

7.41 ± 2.83a

7.47 ± 1.53a

Muscle

2.57 ± 0.60a

1.94 ± 0.79ab

1.4 ± 0.46b

2.14 ± 0.35a

Pb

Liver

0.47 ± 0.17a

0.35 ± 0.01a

0.54 ± 0.32a

0.36 ± 0.04a

Gills

1.53 ± 0.84a

0.71 ± 0.20a

1.14 ± 0.95a

0.58 ± 0.22a

Muscle

0.33 ± 0.05a

0.34 ± 0.01a

0.34 ± 0.10a

0.35 ± 0.01a

  1. Remark:Values are given in mean ± S.D
  2. Post-Hoc: Mean metal concentrations of different parts of tissues sharing a common letter
  3. for a particular metal present no significant differences, p > 0.05