FAQ
Jagiellonian University logo

Two New Species of Centrohelid Heliozoans: Acanthocystis costata sp. nov. and Choanocystis symna sp. nov.

Publication date: 19.09.2014

Acta Protozoologica, 2014, Volume 53, Issue 4, pp. 313 - 324

https://doi.org/10.4467/16890027AP.14.021.1776

Authors

Vasily V. Zlatogursky
Department of Invertebrate Zoology, Faculty of Biology and Soil Sciences, St-Petersburg State University, St. Petersburg, Russia
All publications →

Titles

Two New Species of Centrohelid Heliozoans: Acanthocystis costata sp. nov. and Choanocystis symna sp. nov.

Abstract

Two new species of centrohelid heliozoans Acanthocystis costata and Choanocystis symna from a freshwater lake on Valamo Island and a freshwater pool in St. Petersburg (North-Western Russia) were studied with light and electron microscopy. Sequences of 18S rDNA were obtained for both species.Choanocystis symna has dumbbell-shaped plate scales (4.4–5.0 × 1.62–1.90 µm) and spine scales (3.9–6.7 µm) bearing from 3 to 5 (usually four) short teeth on the distal end. Acanthocystis costata has oval plate scales (1.3–3.7 × 0.9–1.9 µm), bearing numerous granules as well as radial slits and spine scales (2.1–9.5 µm) with 4–6 teeth on the distal end. Acanthocystis costata and Acanthocystis nichollsi are similar in having slit-bearing plate scales and group together on the 18S rDNA tree. The presence of large particles of unknown nature was observed in food vacuoles of Acanthocystis costata.

References

Download references

Biyu S. (2000) Planktonic protozooplankton (ciliates, heliozoans and testaceans) in two shallow mesotrophic lakes in China – a comparative study between a macrophyte-dominated lake (Biandantang) and an algal lake (Houhu). Hydrobiologia 434: 151–163

Cavalier-Smith T., von der Heyden S. (2007) Molecular phylogeny, scale evolution and taxonomy of centrohelid heliozoa. Mol. Phyl. Evol. 44: 1186–1203

Cavalier-Smith T., Chao E. (2012) Oxnerella micra sp. n. (Oxnerellidae fam. n.), a tiny naked centrohelid, and the diversity and evolution of heliozoa. Protist. 163: 574–601

Dürrschmidt M. (1985) Electron microscopic observations on scales of species of the genus Acanthocystis (Centrohelidia, Heliozoa) from Chile. I. Arch. Protistenkd129: 55–87

Gouy M., Guindon S., Gascuel O. (2010) SeaView Version 4: A Multiplatform Graphical User Interface for sequence alignment and phylogenetic tree building. Mol. Phyl. Evol. 27: 221–224

Kiss A. K., Acs E., Kiss K. T., Torok J. K. (2009) Structure and seasonal dynamics of the protozoan community (heterotrophic flagellates, ciliates, amoeboid protozoa) in the plankton of a large river (River Danube, Hungary). Eur. J. Protistol. 45: 121–138

Kudryavtsev A., Pawlowski J., Hausmann K. (2009) Description and phylogenetic relationships of Spumochlamys perforate n. sp. and Spumochlamys bryora n. sp. (Amoebozoa, Arcellinida). J. Eukaryot. Microbiol. 56: 495–503

Leonov M. M. (2010) New species of centrohelid Heliozoa of the genus Acanthocystis (Centroheliozoa). Zool. Zhurn. 89: 507–513

Leonov M. M., Mylnikov A. P. (2012) Centroheliozoa from southern Karelia. Zool. Zhurn. 91: 515–523

Maniatis T., Fritsch E. F., Sambrook J. (1982) Molecular Cloning, Laboratory Manual. Cold Spring Harbor Laboratory, Cold Spring Harbor, New York.

Nicholls K. H. (1983) Little-known and new heliozoans: the centrohelid genus Acanthocystis including descriptions of nine new species. Can. J. Zool. 61: 1369–1386

Page F. C. (1988) A New Key to Freshwater and Soil Gymnamoebae. Freshwater Biological Association, Ambleside

Prescott D. M., James T. W. (1955) Culturing of Amoeba proteus on TetrahymenaExp. Cell Res. 88: 256–258

Siemensma F. J. (1991) Heliozoa. In: Protozoenfauna 2. Gustav Fisher Verlag, Stuttgart, New York, 171–290

Siemensma F. J., Roijackers R. M. M. (1988) A study of new and little-known acanthocystid heliozoans, and a proposed devision of the genus Acanthocystis (Actinopoda, Heliozoea). Arch. Protistenkd. 135: 197–212

Stamatakis A. (2006) RAxML-VI-HPC: maximum likelihood based phylogenetic analyses with thousands of taxa and mixed models. Bioinformatics 22: 2688–2690

Stensdotter-Blomberg U. (1998) Factors controlling pelagic populations of ciliates and heliozoans – late summer investigations in an acidic lake before and after liming. J. Plankton Res. 20: 423–442

Wujek D. E., Saha L. C. (2006) Freshwater scaled heterotrophic flagellates and Heliozoa from India including a description of a new species of ChoanocystisJ. Bombay Nat. Hist. Soc. 103: 71–81

Zlatogursky V. V. (2012) Raphidiophrys heterophryoidea sp. nov. (Centrohelida: Raphidiophryidae), the first heliozoan species with a combination of siliceous and organic skeletal elements. Eur. J. Protistol. 48: 9–16

Information

Information: Acta Protozoologica, 2014, Volume 53, Issue 4, pp. 313 - 324

Article type: Original article

Authors

Department of Invertebrate Zoology, Faculty of Biology and Soil Sciences, St-Petersburg State University, St. Petersburg, Russia

Published at: 19.09.2014

Article status: Open

Licence: None

Percentage share of authors:

Vasily V. Zlatogursky (Author) - 100%

Article corrections:

-

Publication languages:

English