Unusual archamoeba Pelomyxa pilosa sp. nov. (Amoebozoa: Archamoebae: Pelobiontida): a light and electron microscopic study-Reference-Cited by-同舟云学术

Unusual archamoeba Pelomyxa pilosa sp. nov. (Amoebozoa: Archamoebae: Pelobiontida): a light and electron microscopic study

Published:2024-07-17 Issue:1 Volume:33 Page:130-139
ISSN:2410-0226
Container-title:Zoosystematica Rossica
language:en
Short-container-title:Zoosystematica Rossica

Author:

Chistyakova L.V.¹^ORCID,Frolov A.O.¹^ORCID,Radaev A.V.²^ORCID,Smirnov A.V.³^ORCID,Goodkov A.V.⁴^ORCID

Affiliation:

1. Zoological Institute of the Russian Academy of Sciences, 1 Universitetskaya Emb., St Petersburg 199034, Russia

2. Research resource center “Chromas”, St Petersburg State University, 7–9 Universitetskaya Emb., St Petersburg 199034, Russia

3. Department of Invertebrate Zoology, Faculty of Biology, St Petersburg University, 7–9 Universitetskaya Emb., St Petersburg 199034, Russia

4. Laboratory of Cytology of Unicellular Organisms, Institute of Cytology of the Russian Academy of Sciences, 4 Tikhoretskiy Ave., St Petersburg 19406, Russia

Abstract

This paper presents the results of a study and describes a new species of pelobionts, Pelomyxa pilosa sp. nov. (Archamoebae: Pelobiontida). This species was found in the bottom sediments of a pond near St Petersburg (Russia) and was examined using light, immunofluorescence, and transmission electron microscopy. It is placed in the genus Pelomyxa Greeff, 1874 based on a combination of morphological features, including the mode of locomotion, the presence of numerous flagella, the organisation of the cytoplasm, and the presence of obligate prokaryotic endocytobionts. The new species can be easily distinguished from congeners by the specific presence of numerous prokaryotic ectobionts on the cell surface and the organisation of the nuclear apparatus. The nucleolar material in this species forms a hollow sphere consisting of tightly adjacent patches of various shapes and sizes, surrounded by granular material.

Publisher

Zoological Institute of the Russian Academy of Sciences

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