Abstract
The study of morphology of Coscinodiscus radiatus from the Kara-Bogaz-Gol Bay (the Caspian Sea) revealed that at a salinity of 50 to 262‰ among the investigated characters, valve diameter (variation coefficient CV = 21.2%) was the most variable. The number of areolae on the valve mantle in 10 μm (CV = 9.6%) was the least variable characters. Some quantitative characters (valve diameter and number of areolae on the valve mantle in 10 μm) revealed variability compared to the literature data, based on the study of species from marine waters. An increase in the valve diameter of C. radiatus was noted at a salinity of 60‰, a decrease – at a salinity of 262‰. C. radiatus can be characterize as halophilous capable of tolerate fluctuations in salinity.
Published Version
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