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Table 1 Toxic trace metals (Hg, Cd, Pb and As) concentration and total amount of particular trace metals present in S. variolaris at Mount-lavinia reef (n = 6) with standard deviation (± SD)

From: The association of test diameter and gonad weight with some toxic trace metals level in black sea urchin (Stomopneustes variolaris)

Test diameter (cm) Total gonad weight (g) Hg Cd Pb As
Average (Hg) (µg/kg) Total Hg (µg) Average (Cd) (µg/kg) Total Cd (µg) Average (Pb) (µg/kg) Total Pb (µg) Average (As) (µg/kg) Total As (µg)
3.70 1.77 0.00 (± 0.00) 0.00 47.81 (± 19.58) 0.08 0.00 (± 0.00) 0.00 0.00 (± 0.00) 0.00
4.50 1.92 0.00 (± 0.00) 0.00 48.38 (± 9.42) 0.09 0.00 (± 0.00) 0.00 1637.16 (± 396.96) 3.14
5.10 3.10 9.68 (± 0.82) 0.03 156.69 (± 2.63) 0.49 0.00 (± 0.00) 0.00 50.27 (± 156.08) 0.16
6.20 10.07 0.00 (± 0.00) 0.00 158.03 (± 2.73) 1.59 0.00 (± 0.00) 0.00 305.31 (± 64.61) 3.07
7.10 8.63 4.74 (± 0.91) 0.04 217.00 (± 0.78) 1.87 0.00 (± 0.00) 0.00 434.28 (± 324.83) 3.75
8.90 18.69 14.40 (± 5.33) 0.27 336.10 (± 21.46) 6.28 0.00 (± 0.00) 0.00 1805.87 (± 104.54) 33.75