Open AccessMERCURY CONTENT IN MUSCLE TISSUE OF EUROPEAN GRAYLING (THYMALLUS THYMALLUS (L.)) IN THE RIVERS OF THE VOLOGDA REGION
Author(s) -
Aleksandra S. Komarova,
Elena Ugryumova,
Nikolay Tropin,
А.Е. Шилова,
Anya. Sokolova,
M. Ya. Borisov
Publication year - 2018
Publication title -
toksikologičeskij vestnik
Language(s) - English
Resource type - Journals
ISSN - 0869-7922
DOI - 10.36946/0869-7922-2018-4-35-40
Subject(s) - grayling , mercury (programming language) , muscle tissue , biology , salmo , fish <actinopterygii> , zoology , fishery , anatomy , computer science , programming language
The article presents information about the mercury content in the muscle tissue of the European grayling Thymallus thymallus (L.) in 11 rivers of the Vologda region (Tagazhma, Vozhega, Votcha, Kostyuga, Tiksna, Sheben’ga, Pyrnug, Zemtsovka, Yurmanga, Bol’shaya Rechka and Yontala) for the period of 2011–2015. The average content of toxicant ranged from 0,04 mg/kg in individuals of the river Sheben’ga up to 0,21 mg/kg in the rivers Yurmanga and Bol’shaya Rechka. Four fish noted an excess of the permissible level of sanitary and hygienic standards (SanPiN 2.3.2.1078-01. 2.3.2.) for non-predatory fish species (0,3 mg/kg). Young grayling contains an average of 0,06–0,10 mg/kg mercury in muscle tissue, individuals five to six years old contain 0,26 and 0,27 mg/kg, respectively. A comparison of the level of mercury concentration in the muscle tissue of European grayling with that of other fish species showed that the Hg content does not go beyond the revealed background values for water bodies of the Vologda region.