Trace elements accumulation in edible tissues of five sturgeon species from the Caspian Sea

Abstract

This study is focused on twenty trace elements (Ag, Ba, Bi, Cd, Co, Cr, Cs, Cu, Ga, In, Mn, Mo, Pb, Rb, Sb, Sn, Sr, Ti, V, Zn) accumulation in muscles of five sturgeon species (Acipenser guldenstaedti, A. persicus, A. nudiventris, A. stellatus and Huso huso) from the southern part of the Caspian Sea. Moreover the relationships between some biological characteristics and the levels of the selected elements as well as inter-elemental relationships were assessed. The samples (10 specimens for each the five species) were collected from two important sturgeon fishery zones located in the Iranian part of the Sea in 2002. Concentrations of the elements were determined using ICP-MS. Only in the case of Cs could significant differences between two selected sampling areas be detected. There were significant differences in levels of Co, Ga, Rb, Sn, Ti, Pb and Bi in muscles of the species. Only in the case of Cd weight related differences among the species were found. The significant length dependent relationships were observed for Ga and Ba. Patterns of elements accumulation were assessed by statistical methods and compared to the other researches. In all the cases, the amounts of toxic trace elements (Cd, Cu, Pb and Zn) were markedly below the international guidelines for human consumption.

Heavy Metals in Fish from Lakes in Latvia: Concentrations and Trends of Changes

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Metal pollution assessment in a Brazilian hydroelectric reservoir: Geophagus brasiliensis as a suitable bioindicator organism

“…It is known that not all metals taken up by organisms are bioaccumulated; fish can, to a certain degree, regulate metal concentration in tissues (Maceda-Veiga et al, 2012;Pourang et al, 2005), but Cd is one of the most toxic metals, as it is nonessential, and can quickly bioaccumulate in fish (Liu et al, 2011). Even though metallothioneins tend to detoxify nonessential elements (Hansen et al, 2007), their excretion is a slow process (Besirovic et al, 2010).…”

The Applicability of Plasma‐Based Techniques to Biological Monitoring

“…Bioaccumulation of 20 trace elements in muscles of five sturgeon species (Acipenserguldenstaedti, A. persicus, A. nudiventris, A. stellatus, and Huso huso) from the southern part of the Caspian Sea was investigated. Concentrations were determined using ICP-MS [309]. An analytical method for trace and ultratrace elements in rat plasma based on ICP-MS without pretreatment enabled for the first time to quantify ultratrace element concentrations.…”