Concentrations of trace elements in muscle of sturgeons in the Caspian Sea

• Published in: Marine pollution bulletin 2004-11, Vol.49 (9), p.789-800
• Main Authors: Agusa, Tetsuro, Kunito, Takashi, Tanabe, Shinsuke, Pourkazemi, Mohammad, Aubrey, David G.
• Format: Article
• Language: English
• Subjects: Acipenser gueldenstaedtii; Acipenser nudiventris; Acipenser persicus; Acipenser stellatus; Animal, plant and microbial ecology; Animals; Applied ecology; Azerbaijan; Biological and medical sciences; Body Size; Caspian Sea; Ecotoxicology, biological effects of pollution; Environmental Monitoring; Fishes - physiology; Fundamental and applied biological sciences. Psychology; Heavy metals; Huso huso; Iran; Marine; Marine and brackish environment; Mercury; Metals, Heavy - analysis; Metals, Heavy - pharmacokinetics; Sturgeon; Tissue Distribution; Trace elements; Trace Elements - analysis; Trace Elements - pharmacokinetics; Vanadium
• ISSN: 0025-326X; 1879-3363
• DOI: 10.1016/j.marpolbul.2004.06.008

Concentrations of 21 trace elements were determined in muscle of beluga ( Huso huso), Persian sturgeon ( Acipenser persicus), Russian sturgeon ( Acipenser gueldenstaedtii), ship sturgeon ( Acipenser nudiventris) and stellate sturgeon ( Acipenser stellatus) collected from coastal regions of Azerbaijan, Iran, Kazakhstan and Turkmenistan, surrounding the Caspian Sea during 2000–2001. Concentrations of Mn, Co, Cu, Mo, Sn, Hg, Pb and Bi in the muscle were apparently different among the five species of sturgeons. Especially, beluga showed the highest concentrations of Hg, Pb and Mn in all the five species. In addition, more than half of the individuals of beluga exceeded the guideline level (0.3 μg/g wet wt.) of Hg for food in UK. However, V, Cr, Zn, Ga, Rb, Sr and Ba concentrations were similar among five sturgeons. Growth-dependent increase in Hg in beluga, Cu in Persian sturgeon, and Zn in Russian sturgeon were observed, whereas V, Mn, Co, Cu, Ga, Sr, Mo, Sn, Hg and Bi concentrations in Persian sturgeon, Pb in ship sturgeon, and Cr, Mn, and Rb in stellate sturgeon were negatively correlated with body length. All species of sturgeon in Azerbaijan showed the highest concentration of Sr and the lowest concentration of Rb, while the five sturgeons from Iran showed opposite trends. Concentration of V, which is present in oil, in sturgeons in the Caspian Sea was considerably lower than that of fish from Kuwait, but was comparable to that of Cambodia and the Gulf and Gulf of Oman. To our knowledge, this study provides the first extensive data on multielemental accumulation in sturgeons of the Caspian Sea.