Table 4.
Seasonal profile of mean (± SD) element concentrations (mg/kg) in different tissues of barbel and in P. laevis
| Element/ Season | Tissue | Spring | Summer | Autumn |
|---|---|---|---|---|
| (n = 8) | (n = 8) | (n = 8) | ||
| As | Muscle | 0.28 ± 0.25 | 0.21 ± 0.15 | 0.19 ± 0.10 |
| Intestine | 0.52 ± 0.32 | 0.35 ± 0.20 | 0.45 ± 0.17 | |
| Liver | 0.67 ± 0.42 | 0.54 ± 0.49 | 0.56 ± 0.21 | |
| P. laevis | 1.08 ± 0.54 | 1.01 ± 0.60 | 1.92 ± 1.23 | |
| Cd | Muscle | 0.02 ± 0.03 | 0.01 ± 0.01 | 0.02 ± 0.01 |
| Intestine | 0.24 ± 0.31 | 0.11 ± 0.07 | 0.14 ± 0.05 | |
| Liver | 0.16 ± 0.22 | 0.08 ± 0.04 | 0.16 ± 0.10 | |
| P. laevis | 2.40 ± 2.09 | 1.34 ± 0.55 | 2.63 ± 0.58 | |
| Co | Muscle | 0.02 ± 0.01 | 0.02 ± 0.01 | 0.02 ± 0.01 |
| Intestine | 0.15 ± 0.08 | 0.17 ± 0.14 | 0.19 ± 0.16 | |
| Liver | 0.04 ± 0.01 | 0.04 ± 0.01 | 0.05 ± 0.03 | |
| P. laevis | 0.07 ± 0.02 | 0.10 ± 0.07 | 0.13 ± 0.08 | |
| Cu | Muscle | 1.45 ± 1.36 | 1.57 ± 1.29 | 1.00 ± 0.39 |
| Intestine | 7.37 ± 4.87 | 4.79 ± 2.44 | 6.23 ± 2.85 | |
| Liver | 16.92 ± 11.59 | 13.40 ± 8.11 | 11.76 ± 5.90 | |
| P. laevis | 75.37 ± 35.43 | 53.13 ± 24.13 | 77.40 ± 35.84 | |
| Fe | Muscle | 13.29 ± 3.54 | 10.21 ± 4.72 | 9.83 ± 4.10 |
| Intestine | 84.55 ± 42.22 | 70.92 ± 17.87 | 118.19 ± 89.73 | |
| Liver | 71.88 ± 23.11 | 81.34 ± 39.42 | 67.94 ± 29.24 | |
| P. laevis | 76.62 ± 69.21 | 41.27 ± 23.28 | 37.59 ± 10.37 | |
| Mn | Muscle | 0.37 ± 0.15 | 0.35 ± 0.11 | 0.45 ± 0.42 |
| Intestine | 4.44 ± 1.48 | 7.35 ± 6.37 | 13.84 ± 14.64 | |
| Liver | 1.26 ± 0.33 | 1.49 ± 0.77 | 1.45 ± 0.80 | |
| P. laevis | 4.67 ± 0.85 | 7.64 ± 5.87 | 8.94 ± 6.87 | |
| Mo | Muscle | 0.01 ± 0.004 | nd | 0.01 ± 0.01 |
| Intestine | 0.06 ± 0.04 | 0.06 ± 0.02 | 0.03 ± 0.02 | |
| Liver | 0.21 ± 0.11 | 0.28 ± 0.16 | 0.13 ± 0.06 | |
| P. laevis | 0.05 ± 0.02 | 0.10 ± 0.06 | 0.05 ± 0.06 | |
| Ni | Muscle | 1.26 ± 1.31 | 0.66 ± 0.61 | 0.31 ± 0.16 |
| Intestine | 1.58 ± 0.74 | 2.28 ± 1.16 | 1.60 ± 0.84 | |
| Liver | 0.33 ± 0.22 | 0.21 ± 0.15 | 0.28 ± 0.15 | |
| P. laevis | 2.73 ± 1.30 | 0.55 ± 0.28 | 0.58 ± 0.26 | |
| Pb | Muscle | 0.01 ± 0.01 | 0.004 ± 0.003 | 0.01 ± 0.01 |
| Intestine | 0.09 ± 0.03 | 0.12 ± 0.10 | 0.48 ± 0.53 | |
| Liver | 0.03 ± 0.02 | 0.03 ± 0.02 | 0.06 ± 0.05 | |
| P. laevis | 6.83 ± 4.87 | 5.19 ± 3.74 | 9.81 ± 4.63 | |
| V | Muscle | 0.04 ± 0.01 | 0.04 ± 0.01 | 0.03 ± 0.012 |
| Intestine | 0.15 ± 0.05 | 0.29 ± 0.36 | 0.48 ± 0.398 | |
| Liver | 0.12 ± 0.05 | 0.17 ± 0.16 | 0.14 ± 0.094 | |
| P. laevis | 0.07 ± 0.01 | 0.10 ± 0.04 | 0.16 ± 0.069 | |
| Zn | Muscle | 4.71 ± 1.49 | 4.76 ± 1.51 | 3.66 ± 0.69 |
| Intestine | 11.39 ± 3.86 | 10.40 ± 1.16 | 10.14 ± 1.87 | |
| Liver | 18.82 ± 3.37 | 19.23 ± 5.84 | 18.00 ± 3.96 | |
| P. laevis | 63.91 ± 36.39 | 34.83 ± 16.66 | 91.06 ± 43.47 |
nd element not detected (concentration below the detection limit)