The effect of decrease in salinity on the dynamics of abundance and the cell size of Corethron Hystrix (Bacillariophyta) in laboratory culture |
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| Authors: | Nina A. Aizdaicher Zhanna V. Markina |
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| Affiliation: | (1) College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266003, PR China;(2) School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shangha, 200240, PR China;(3) College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266003, PR China; |
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| Abstract: | Effect of salinity on abundance dynamics and cell size of microalga Corethron hystrix Hensen (Bacillariophyta) were studied. C. hystrix can normally grow within a rather narrow salinity range between 32 and 28‰. The viable cells of this microalga change their morphological characters at a salinity of 24‰. This salinity level probably marks the beginning of cell division restriction, because the general number of cells by the end of the experiment was lower than in the control. The decrease of salinity to 16‰ caused pronounced irreversible morphological changes: cell height increased, chloroplasts compressed, protoplasm became granular, cytoplasm retracted, and spines shortened. |
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