Table 2 Origin, biometric and heavy metal data of European conger (Conger conger) sampled beween 2017 and 2019 in Morocco
Site | n | length [cm] | mass [g] | Hg [µg/kg WM] | Pb [µg/kg WM] | Cd [µg/kg WM] |
|---|---|---|---|---|---|---|
Al Hoceima | 5 | 69.3 (57.0–79.0) | 542 (290–760) | 164.73 ± 102.96 (80.46–336.01) | 52.68 ± 16.80 (34.02–72.77) | 97.74 ± 37.00 (41.26–142.60) |
Casablanca | 10 | 89.3 (46.0–108.0) | 1589 (140–2490) | 117.25 ± 71.24 (47.50–261.77) | 30.77 ± 23.37 (11.82–87.14) | 537.23 ± 387.90 (169.80–1207.70) |
Laayoune Port | 16 (10) | 105.1 (64.0–131.7) | 2706 (402–4831) | 160.09 ± 91.06 (62.60–384.24) | 68.35 ± 36.47 (32.21–156.62) | 475.70 ± 195.36 (287.28–920.67) |
Martil | 12 | 94.8 (76.5–111.5) | 1773 (730–3040) | 594.65 ± 252.21 (290.28–1123.08) | 53.59 ± 49.33 (17.37–196.11) | 139,99 ± 97.58 (14.29–383.80) |
Nador | 15 (13) | 60.5 (42.0–86.5) | 357 (101–1010) | 69.81 ± 16.07 (44.43–98.83) | 73.67 ± 51.13 (33.11–220.98) | 3.56 ± 2.25 (0.84–8.47) |
Ras el Ma | 18 (11) | 69.4 (51.0–87.5) | 569 (175–1140) | 98.60 ± 47.19 (31.09–202.36) | 151.31 ± 179.77 (24.08–656.56) | 97.66 ± 63.84 (8.19–230.90) |
Safi | 16 | 104.3 (91.5–145.5) | 2264 (1330–6790) | 368.43 ± 153.29 (191.05–862.25) | 56.09 ± 26.69 (23.36–112.15) | 319.63 ± 90.42 (189.26 -467.63) |
Sidi el Abed | 5 (0) | 103.1 (95.0–113.0) | 2292 (1690–2910) | 542.14 ± 219.87 (164.67–732.62) | 104.75 ± 15.97 (83.01–121.87) | n.d |
Skhirat | 11 | 101.7 (82.5–144.5) | 2209 (960–6160) | 322.24 ± 125.13 (112.66–505.89) | 40.84 ± 19.63 (17.06–72.91) | 414.82 ± 386.39 (59.04–1351.60) |
All | 108 (78) | 88.1 (42.0–145.5) | 1578 (101–6790) | 246.90 ± 216.83 (31.09–1123.08) | 74.14 ± 87.02 (11.82–656.56) | 255.12 ± 287.15 (0.84–1351.60) |