TY - JOUR
T1 - Metal concentrations and toxicity in South African snoek (Thyrsites atun) and yellowtail (Seriola lalandi)
AU - Bosch, Adina C.
AU - O'Neill, Bernadette
AU - Kerwath, Sven E.
AU - Sigge, Gunnar O.
AU - Hoffman, Louwrens C.
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017
Y1 - 2017
N2 - The concentrations of 16 metals were assessed in snoek(Thyrsites atun; n = 20) and yellowtail (Seriola lalandi; n = 37) sampled from the West and South-East coasts of South Africa. Variability was observed at both small (Al, Cr, Hg, Pb, Mn and Cu) and large (As and Cu) spatial scales while inter-specific examination revealed diverse metal concentrations in snoek (Higher levels: Cr, Mn, Co, Hg and Pb) and yellowtail (higher levels: Fe and Cu). Zn, As and Hg were positively correlated with yellowtail size with no such correlations in snoek. Mean concentrations of As (0.61 mg·kg− 1; 0.98 mg·kg− 1), Cd (0.008 mg·kg− 1; 0.004 mg·kg− 1), Hg (0.27 mg·kg− 1; 0.16 mg·kg− 1) and Pb (0.009 mg·kg− 1; 0.005 mg·kg− 1) for snoek and yellowtail respectively were within regulatory guidelines. However, 10% (n = 2) of snoek exceeded Hg maximum allowable limit, suggesting caution and further investigation. Overall, two meals (150 g) per week of snoek or larger yellowtail (12–15 kg) can be safe for human (adult) consumption.
AB - The concentrations of 16 metals were assessed in snoek(Thyrsites atun; n = 20) and yellowtail (Seriola lalandi; n = 37) sampled from the West and South-East coasts of South Africa. Variability was observed at both small (Al, Cr, Hg, Pb, Mn and Cu) and large (As and Cu) spatial scales while inter-specific examination revealed diverse metal concentrations in snoek (Higher levels: Cr, Mn, Co, Hg and Pb) and yellowtail (higher levels: Fe and Cu). Zn, As and Hg were positively correlated with yellowtail size with no such correlations in snoek. Mean concentrations of As (0.61 mg·kg− 1; 0.98 mg·kg− 1), Cd (0.008 mg·kg− 1; 0.004 mg·kg− 1), Hg (0.27 mg·kg− 1; 0.16 mg·kg− 1) and Pb (0.009 mg·kg− 1; 0.005 mg·kg− 1) for snoek and yellowtail respectively were within regulatory guidelines. However, 10% (n = 2) of snoek exceeded Hg maximum allowable limit, suggesting caution and further investigation. Overall, two meals (150 g) per week of snoek or larger yellowtail (12–15 kg) can be safe for human (adult) consumption.
KW - Fish muscle
KW - ICP-MS
KW - Metals
KW - Seriola lalandi
KW - Thyrsites atun
KW - Toxicity
UR - http://www.scopus.com/inward/record.url?scp=85021424556&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2017.06.074
DO - 10.1016/j.marpolbul.2017.06.074
M3 - Article
C2 - 28676172
AN - SCOPUS:85021424556
SN - 0025-326X
VL - 122
SP - 360
EP - 365
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 1-2
ER -