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Hydrobiological Journal
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN Print: 0018-8166
ISSN Online: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v43.i6.80
pages 92-102

Seasonal Peculiarities of Properties of Metallothioneins of the Freshwater Bivalve Colletopterum piscinale (Unionidae)

O. B. Stoliar
Ternopil Teachers Training Institute Ternopil, Ukraine
G. I. Fal'fushinskaya
Ternopil' State Pedagogical University, Ternopil', Ukraine; Ternopil Medical University
O. G. Bazan
Ternopil' State Pedagogical University, Ternopil', Ukraine

ABSTRACT

Metallothioneins of tissues of digestive gland and gills of the bivalve Colletopterum piscinale (Unionidae) bind about 40% of copper, less then 10% of zinc and more then 80% of cadmium. These are represented by two chromatographic forms: MT-1 (Zn-MT) and MT-2 (Zn, Cu-MT). The content of zinc in tissues and metallothioneins is significantly higher in summer than in autumn while the level of copper is relatively stable. Metallothioneins of digestive gland are sensitive biomarkers of cadmium because these proteins allow its revealing when the content of cadmium in water is below the detection limit.


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