Heliozoa (Centrohelea, Haptista, Hacrobia) of saline and brackish water bodies and watercourses of Russia

Плотников, А. О.; Герасимова, Е. А.

doi:10.1134/s1995082917020109

Cited by 13 publications

(11 citation statements)

References 10 publications

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“…Oval plate scales are 3.67-4.39×1.92-2.63 µm, with medial thickening and dense margins. Remarks: Morphology of observed scales corresponds to previous descriptions, however, many authors described smaller plate scales (2.5-3.1×1.4-2.0 µm) (Dürrschmidt 1985(Dürrschmidt , 1987bGaponova 2008;Plotnikov and Gerasimova, 2017;Prokina and Mylnikov 2019).…”

Section: Acanthocystis Turfacea Carter 1863 (Figs 1csupporting

confidence: 75%

“…Distribution: Freshwaters of N. America (Nicholls 1983), S. America (Dürrschmidt 1985), Australia (Croome 1986), Crimean Peninsula (Mikrjukov 1999). It was found in Russia in freshwaters of European part (Leonov and Plotnikov 2009, Leonov 2010a, Plotnikov and Ermolenko 2015, Prokina et al 2017c, in saline inland waters of Orenburg Region (Plotnikov and Gerasimova 2017), in the Black Sea (Leonov 2010a). 4E-G) Description: Diameter of protoplast of living cell is 29 µm.…”

Section: Acanthocystis Trifurcamentioning

confidence: 99%

“…Distribution: Freshwaters of Europe (Gaponova 2008), Asia (Wujek and Saha 2006), Australia (Croome 1987), Africa (Wujek and Ogundipe 2002), S. America (Dürrschmidt 1985(Dürrschmidt , 1987bProkina and Mylnikov 2019), Japan, New Zealand, Sri Lanka (Dürrschmidt 1987b). It was found in Russia in freshwaters of Orenburg Region (Ermolenko and Plotnikov 2013), in saline inland waters of Volgograd Region (Plotnikov and Gerasimova 2017), in the Black Sea (unpubl. data).…”

Section: Acanthocystis Turfacea Carter 1863 (Figs 1cmentioning

confidence: 99%

“…Distribution: Freshwaters of Europe (Mikrjukov 1993b, Gaponova 2008, Asia (Kosolapova and Mylnikov 2015), Africa (Wujek and Ogundipe 2002), N. America (Nicholls 1983, Wujek 2006, S. America (Dürrschmidt 1985(Dürrschmidt , 1987bProkina and Mylnikov 2019), Australia (Croome 1986), Sri Lanka (Dürrschmidt 1987b), Crimean Penninsula (Mikrjukov 1999); marine waters of Europe (Vørs 1992, Mikrjukov 2001. It was found in Russia in freshwaters of European part (Mikrjukov 1993a, Leonov 2010a, Leonov and Plotnikov 2009, Ermolenko and Plotnikov 2013, Plotnikov and Ermolenko 2015, in saline inland waters of Orenburg Region (Plotnikov and Gerasimova 2017). (Nicholls, 1983) Mikrjukov, 1999[bas.…”

Section: Raineriohrys Erinaceoidesmentioning

confidence: 99%

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Centrohelid Heliozoans (Centroplasthelida Febvre-Chevalier et Febvre, 1984) from Different Types of Freshwater Bodies in the Middle Russian Forest-steppe

Prokina

Zagumyonnyi

Tikhonenkov

2018

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Species diversity of centrohelid heliozoans in different types of freshwater bodies (forest lakes, floodplain lakes, sphagnum bogs, and river) in the Middle Russian forest-steppe was studied. The morphology of cell coverings (scales and spicules) were observed using scanning and transmission electron microscopy. A total of 20 species of centrohelid heliozoans from five families (Acanthocystidae, Pterocystidae, Raphidiophryidae, Raphidocystidae, and Choanocystidae) and six genera (Acanthocystis, Raineriophrys, Pterocystis, Raphidiophrys, Raphidocystis, and Choanocystis) as well as an unidentified Centrohelea species and a Heterophrys-like organism were found. Morphological descriptions and electron micrographs are provided. The most common species were Acanthocystis nichollsi, Raphidiophrys capitata, and a Heterophrys-like organism. The highest species diversity was observed in terrace forest lakes, whereas the lowest was seen in sphagnum bogs. Four species (Acanthocystis costata, A. elenazhivotovae, A. mikrjukovii, and A. spinosa) were found for the first time since their original description. Three species (Acanthocystis spinosa, Raphidiophrys capitata, and Pterocystis pulchra) are new records for Russia. The distribution of the observed morphospecies confirms the cosmopolitanism of many centrohelids and highlights the importance of the type of water body and microbiotope in forming the species composition. The obtained data on the morphology of studied scales supplements our knowledge of the intraspecific variability of centrohelid heliozoans.

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Section: Acanthocystis Turfacea Carter 1863 (Figs 1csupporting

confidence: 75%

Section: Acanthocystis Trifurcamentioning

confidence: 99%

Section: Acanthocystis Turfacea Carter 1863 (Figs 1cmentioning

confidence: 99%

Section: Raineriohrys Erinaceoidesmentioning

confidence: 99%

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Centrohelid Heliozoans (Centroplasthelida Febvre-Chevalier et Febvre, 1984) from Different Types of Freshwater Bodies in the Middle Russian Forest-steppe

Prokina

Zagumyonnyi

Tikhonenkov

2018

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“…ambigua is a ubiquitous species; it occurs in fresh water in North America (Nicholls & Dürrschmidt, 1985; Wujek, 2006), South America, Chile (Nicholls & Dürrschmidt, 1985), Netherlands (Siemensma, 1981), New Zealand (Nicholls & Dürrschmidt, 1985), Sri Lanka (Nicholls & Dürrschmidt, 1985), and Mongolia (Kosolapova & Mylnikov, 2015). It is also found in European Russia (Ermolenko & Plotnikov, 2013; Leonov, 2010, 2012; Leonov & Mylnikov, 2012; Leonov & Plotnikov, 2009; Plotnikov & Ermolenko, 2015; Prokina et al, 2017a) in brackish (19‰) inland waters (Plotnikov & Gerasimova, 2017).…”

Section: Resultsmentioning

confidence: 89%

Silica‐scaled heterotrophic protists Rotosphaerida, Thaumatomonadida, and Centroplasthelida in the large continuous ecosystem connecting Lake Baikal to the Kara Sea

Bessudova

Firsova

Likhoshway

2021

J Eukaryotic Microbiology

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Heterotrophic protists Rotosphaerida, Thaumatomonadida, and centrohelid heliozoans are among the less studied silicified protists in terms of their biogeography and ecology. These organisms inhabit fresh and brackish water, and leave behind siliceous structural elements after death that are species‐specific and amenable to electron microscopic analysis. This paper is the first to present data on species richness and taxonomic structure of silica‐scaled heterotrophic protists—rotosphaerids, colorless free‐living thaumatomonad flagellates and centrohelid heliozoans—in the large continuous water system of Siberia connecting Lake Baikal to the Kara Sea. In the study area, electron microscopy revealed 21 centrohelid heliozoan species from the genera Raphidiophrys (1), Acanthocystis (7), Choanocystis (3), Raineriophrys (2), Raphidocystis (6), and Pterocystis (2), seven rotosphaerid species from the genera Pinaciophora (3), Turriplaca (2), Rabdiophrys (1), and Pompholyxophrys (1), and one thaumatomonad flagellate species Thaumatomastix. Two species of rotosphaerids, Rabdiophrys cf. anulifera and Pinaciophora tridentata, and two species of centrohelid heliozoans, Acanthocystis cf. tubata, and A. cf. cornuta, were found in the waters of Russia for the first time. The most widespread species in fresh water from Lake Baikal to the Lower Yenissei River were Pinaciophora fluviatilis and Raineriophrys cf. fortesca. These species disappeared from the protist assemblages of the Yenissei gulf of the Kara Sea due to higher salinity, with only three species, Acanthocystis cf. mylnikovi (at 3.12‰ salinity) and A. pectinata and Raphidocystis sp. 2 (at 8‰ salinity), found in the area. The sensitivity of silica‐scaled heterotrophic protists to changes in habitat parameters suggests that these microeukaryotes could be new indicator organisms.

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Centrohelid heliozoans of Ukraine with a description of a new genus and species (Haptista: Centroplasthelida)

Zagumyonnyi

Radaykina²,

Keeling³

et al. 2022

European Journal of Protistology

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Heliozoa (Centrohelea, Haptista, Hacrobia) of saline and brackish water bodies and watercourses of Russia

Cited by 13 publications

References 10 publications

Centrohelid Heliozoans (Centroplasthelida Febvre-Chevalier et Febvre, 1984) from Different Types of Freshwater Bodies in the Middle Russian Forest-steppe

Centrohelid Heliozoans (Centroplasthelida Febvre-Chevalier et Febvre, 1984) from Different Types of Freshwater Bodies in the Middle Russian Forest-steppe

Silica‐scaled heterotrophic protists Rotosphaerida, Thaumatomonadida, and Centroplasthelida in the large continuous ecosystem connecting Lake Baikal to the Kara Sea

Centrohelid heliozoans of Ukraine with a description of a new genus and species (Haptista: Centroplasthelida)

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