Total mercury in fur, whiskers and whole blood of Caspian seals (Pusa capsica) from north-east of Caspian Sea (Kazakhstan)
Udodenko Y.G. Solovyeva M.A. Glazov D.M. Klimov F.V. Komov V.T. Kamshilova T.B. Rozhnov V.V.
August 2024Elsevier Ltd
Marine Pollution Bulletin
2024#205
Total Mercury (THg) content was determined in the fur of 64 Caspian seals, in the whiskers of 59 individuals and whole blood of 29 individuals. The THg content in Caspian seal fur varied from 258 to 8511 μg/kg, in whiskers from 954 to 12,957 μg/kg, and in whole blood from 88 to 350 μg/l. There were no statistically significant differences in mercury concentration in biomaterial between males and females (Kruskal-Wallis test, p < 0.05). The 1–2-year-old seals contained less mercury compared to older seals. The THg content in Caspian seal samples was comparable to seals from different regions of North Eurasia. Four individuals had mercury concentrations in their fur above the threshold values that can lead to nervous system disorders (>5400 μg/kg).
Hair , Hg , Marine mammals , Pinnipeds , Vibrissae
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I.D. Papanin Institute for Biology of Inland Waters RAS, Borok, Russian Federation
A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russian Federation
“Kazakhstan Agency of Applied Ecology” LLP, Almaty, Kazakhstan
Cherepovets State University, Cherepovets, Russian Federation
I.D. Papanin Institute for Biology of Inland Waters RAS
A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences
“Kazakhstan Agency of Applied Ecology” LLP
Cherepovets State University
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