Concentrations of mercury and other trace elements in porbeagle shark Lamna nasus

Concentrations of 11 trace elements in three tissues of porbeagle shark Lamna nasus (n=33) were determined. The maximum observed concentrations of Cd and Pb in muscle were 0.04 and 0.01mgkg−1, respectively, and all muscle samples were below European seafood limits for these metals. Hg concentrations...

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Bibliographic Details
Published in:Marine pollution bulletin 2016-11, Vol.112 (1-2), p.406-410
Main Authors: Nicolaus, E.E. Manuel, Bendall, Victoria A., Bolam, Thi P.C., Maes, Thomas, Ellis, Jim R.
Format: Article
Language:English
Subjects:
Animals
Atlantic
Celtic Sea
Contaminants
Copper - analysis
Ecosystem
Environmental Monitoring
Europe
Female
Iron - analysis
Lamna nasus
Lamnidae
Lamniformes
Male
Marine
Mercury - analysis
Metals
Muscles - chemistry
Oceans and Seas
Sharks
Tissue Distribution
Trace Elements
Water Pollutants, Chemical - analysis
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Summary:Concentrations of 11 trace elements in three tissues of porbeagle shark Lamna nasus (n=33) were determined. The maximum observed concentrations of Cd and Pb in muscle were 0.04 and 0.01mgkg−1, respectively, and all muscle samples were below European seafood limits for these metals. Hg concentrations in either the red or white muscle that exceeded European regulations for seafood were observed in one-third of specimens. Hg concentration, however, increased with length, and all fish >195cm had concentrations >1.0mgkg−1, with a maximum observed value of 2.0mgkg−1. Concentrations of Fe and Cu were, on average, 9.7 and 10 times higher in red muscle than in nearby white muscle, respectively. Mn, Zn, As and Se were also found in significantly higher concentrations in red muscle than in white muscle. •Analysed 11 trace elements in three tissues of porbeagle shark Lamna nasus•Maximum concentrations of Cd and Pb in muscle were 0.04 and 0.01mgkg−1.•Hg concentrations increased with length•All porbeagle >195cm had concentrations >1.0mgkg−1.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2016.07.047