Hydrobiological Journal

ISSN for PRINT: 0018-8166

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2003, Volume39

V. V. Arkhipchuk
Institute of Colloid Chemistry and Water Chemistry National Academy of Sciences of Ukraine Kiev, Ukraine Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine

Ya. A. Stoyka
Institute of Colloid Chemistry and Water Chemistry National Academy of Sciences of Ukraine Kiev, Ukraine Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine

The influence of artificial mediums with different concentrations of potassium ions on nucleolar parameters (the number and size of nucleoli, the share of cells with heteromorphic-paired nucleoli) in fin and spleen cells, as well as on the RNA and DNA content in spleen cells of common carp, Cyprinus carpio L., was under investigation. The nucleolar parameters of fin cells and the RNA content and the RNA/DNA ratio in spleen cells of carps cultivated during 28 days in three artificial mediums were significantly decreased in comparison with the environmental water, whereas no distinct response of the nucleolar characteristics in spleen cells has been observed. The studied mediums were ranged by their negative influence on the nucleolar parameters as well as the RNA-synthesis activity indices, as follows: the artificial medium with the optimal salt content (3.5 mg potassium ions/L) < the high potassium concentration medium (35.0 mg/L) і the low potassium concentration medium (0.35 mg/L). Under environmental water conditions, the nucleolar activity indices in carp fin cells correlate with nucleolar morphometric parameters, as well as with the RNA-synthesis activity indices in spleen cells.

DOI: 10.1615/HydrobJ.v39.i3.30 Download article, 8 pages

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