Saint-Petersburg State University
Faculty of Biology

Department of Invertebrate Zoology
Rus | Eng

Sporozoans: diversity, structure, phylogeny, and adaptation strategies to parasitism

Biodiversity and evolutionary paths of sporozoans (Sporozoa, Apicomplexa); system, fine structure, host-parasite relationships, biology.
Gita G. Paskerova (

Our team:
Gita G. Paskerova,
Anna I. Ganyukova,
Tatiana S. Panfilkina,
Sophia A. Denisova,

Selected publications:

Valigurová A., Paskerova G. G., Diakin A., Kováčiková M., Simdyanov T. G.. 2015. Protococcidian Eleutheroschizon duboscqi, an Unusual Apicomplexan Interconnecting Gregarines and Cryptosporidia. PLoS One 10(4): e0125063. doi:10.1371/journal.pone.0125063.

Butaeva F., Paskerova G., Entzeroth R. 2006. Ditrypanocystis sp. (Apicomplexa, Gregarinia, Selenidiidae) in Enchytraeus albidus (Annelida, Oligochaeta, Enchytraeidae): mode of survival at gutís brush border close to this of Cryptosporidium. Cytology. Vol. 48, N 8. P. 695-704.

Dyakin A.Yu., Paskerova G.G. 2004. Morphology of Urospora chiridotae (Sporozoa: Gregarinomorpha: Eugregarinida) from sea cucumber Chiridota laevis (Echinodermata: Holothuroidea: Apoda). Parasitologiya. Vol.38, N 3. P. 225–238 [in Russian with English summary].


Our main interest is to uncover the biodiversity of sporozoans (Sporozoa, Apicomplexa). We want to demonstrate their attachment and/or invasions strategies, to correlate parasite cell motility with their cell cortex organization and to understand host-parasite interactions deeply. In general, our studies deal with sporozoans from marine invertebrates, but also we have interest in eugregarines and neogregarines from insects. Each member of our team oversees a specific area of research and a range of objects:

Gita Paskerova investigates biodiversity and evolutionary trends in early emerging sporozoans (ultrastructural and biological data).

Anna Ganyukova studies gregarines from littoral amphipodes.

Tatiana Panfilkina is interested in fine structure of sporozoans; at the present time, she is preparing her Bachelor thesis on gregarines from littoral polychaetes.

Sophia Denisova is very enthusiastic about her study of lower coccidians, inhabiting marine invertebrates.

We also keep insects' cultures. We are ready to accept into our team anyone wishing to work in following fields: i) diversity and life-cycles of septate gregarines, their relationships with hosts ó insects, host-parasite coevolution; ii) fauna of neogregarines, ultrastructure, phylogeny, host-parasite relationships, biological control of pests. We also have data on microsporidians from gregarines, unusual hyperparasites of Metchnikovellidae family.

Study area
Marine Biological Station of SPbSU.

White Sea expeditions, MBS SPbSU (since 1992).
Barents Sea (2000, 2001).
Roscoff, Bretagne, France (2006, 2010).

Assoc. Prof. Timur G. Simdyanov, PhD. Dept. of Invertebrate Zoology, Faculty of Biology, M.V. Lomonosov Moscow State University, Russian Federation. E-mail: Web:
Yulia Ya. Sokolova, senior researcher, PhD, Institute of Cytology, Russian Academy of Sciences, Russian Federation. E-mail:
RNDr. Andrea Valigurová, PhD. Research and development worker, Masaryk University, Brno, Czech Republic. E-mail: Web: Andrei Diakin, PhD student (2012 — present), Masaryk University, Brno, Czech Republic. E-mail:

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