Morphological variability, taxonomy, and distribution of Cyclotella bodanica Eulenstein (Bacillariophyta) in Russia
2013
Genkal, S. I. | Mitrophanova, E. Yu | Kulikovskiy, M. S.
The morphology of six populations of a rare freshwater species of diatoms, Cyclotella bodanica Eulenstein, from lakes of different geographic location is studied using SEM techniques. It is shown that some features (number of striae and marginal fultoportulae in 10 μm, number of thin costae in alveoli and their branching, relief of the central area and peripheral zone, and arrangement of rimoportulae) vary to a greater extent than is indicated in the literature. The results have made it possible to improve the diagnosis of this species and refer C. intermedia to its synonymy. Similarities and differences between C. bodanica and morphologically similar species of the complex C. comta/C. radiosa are also considered. The distribution of C. bodanica in water bodies of Russia is specified.
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