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New Data on the Morphology, Taxonomy and Distribution of Small-Celled Species of the Genus Stephanodiscus in Lake Teletskoye and the Water Bodies of Its Basin (Altai, Russia)

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Abstract

As a result of this scanning electron microscopy study of centric diatoms, collected from Lake Teletskoye and water bodies of its catchment basin in 1989–2020, three small celled species of the genus Stephanodiscus (S. binatus, S. makarovae and S. minutulus), including two (S. makarovae and S. binatus) new for the study area, have been recorded. The morphological analysis of these species has shown that some of them differ in a number of quantitative (valve diameter, frequency of marginal fultoportulae) and qualitative (arrangement of spines) characteristics from the literature data. The distribution of the studied species throughout the lake is quite different. S. binatus ismet in the shallow and deep waters in the south (near Chulyshman River mouth) and north latitudinal parts of Lake Teletskoye, while S. minutulus is confined mainly to the northern part of the waterbody. S. makarovae is not found in the lake at all, though all the three species have been recorded in the phytoplankton of Lake Dzhulukul, located at the head of the Chulyshman River, the main tributary of Lake Teletskoye.They are revealed either in the phytoplankton of the upper, middle or lower parts of Lake Dzhulukul. Besides, S. binatus and S. minutulus are found in the source of the Chulyshman River, while S. makarovae is not recorded there.

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Funding

This study was conducted in the framework of state assignments, projects no. 121031200178-8 (analysis of results) and no. 121051100099-5 and partial support of the RFBR nos. 19-04-00280 and 19-05-50055 (some sample selection) and RSF no. 21-17-00135 (some sample processing on SEM Hitachi S-3400N).

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Authors and Affiliations

  1. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Nekouzskii raion, Yaroslavl oblast, Russia

    S. I. Genkal

  2. Institute for Water and Environmental Problems, Siberian Branch of the Russian Academy of Sciences, Barnaul, Russia

    E. Yu. Mitrofanova

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  1. S. I. Genkal
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  2. E. Yu. Mitrofanova
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Correspondence to S. I. Genkal or E. Yu. Mitrofanova.

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Conflict of interests. The authors declare that they have no conflict of interest.

Statement on the welfare of animals. The present paper does not contain any research involving humans and animals as research objects.

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Genkal, S.I., Mitrofanova, E.Y. New Data on the Morphology, Taxonomy and Distribution of Small-Celled Species of the Genus Stephanodiscus in Lake Teletskoye and the Water Bodies of Its Basin (Altai, Russia). Inland Water Biol 15, 740–749 (2022). https://doi.org/10.1134/S1995082922060049

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