Saint-Petersburg State University
Faculty of Biology

Department of Invertebrate Zoology
Rus | Eng

Evolutionary morphology and reproductive biology of aquatic invertebrates

Head of the Group:
Andrew N. Ostrovsky, PhD, DSc, Associate Professor

Andrey E. Vishnyakov (Associate Professor)
Olga N. Kotenko (lecturer);
Uliana A. Nekljudova (PhD student);
Ekaterina T. Shevchenko (PhD student);
Xenia M. Serova (PhD student);
Daria A. Matvienko (undergraduate student);
Elena V. Belikova (collaborator);
Vladimir A. Kutjumov (undergraduate student)
Anna Y. Kvatch (undergraduate student)
Alexandra R. Kniazeva (undergraduate student)
Nadezhda P. Karagodina (undergraduate student)

Recent publications:

  1. Ostrovsky A.N., Lidgard S., Gordon D.P., Schwaha T., Genikhovich G., Ereskovsky A.V. 2016. Matrotrophy and placentation in invertebrates: a new paradigm. Biological Reviews 91: 673-711. DOI: 10.1111/brv.12189
  2. Ostrovsky A.N. 2013. Evolution of the sexual reproduction in marine invertebrates: example of gymnolaemate Bryozoa. Springer Verlag: Dordrecht, Heidelberg, New York. 356 pp.
  3. Shunkina K.V., Starunov V.V., Zaytseva O.V., Ostrovsky A.N. 2015. Comparative morphology of the nervous system in three phylactolaemate bryozoans. Frontiers in Zoology 12: 28. DOI:10.1186/s12983-015-0112-2
  4. Popov I.Yu., Ostrovsky A.N. 2014. Survival and extinction of the southern populations of freshwater pearl mussel Margaritifera margaritifera in Russia (Leningradskaya and Novgorodskaya oblast). Hydrobiologia 735: 161-177. DOI: 10.1007%2Fs10750-013-1640-4
  5. Ostrovsky A.N. 2013. From incipient to substantial: evolution of placentotrophy in a phylum of aquatic colonial invertebrates. Evolution 67(5): 1368-1382. DOI: 10.1111/evo.12039
  6. Lidgard S., Carter M.C., Dick M.H., Gordon D.P., Ostrovsky A.N. 2012. Division of labor and recurrent evolution of polymorphisms in a group of colonial animals. Evolutionary Ecology 26(2): 233257. DOI: 10.1007/s10682-011-9513-7
  7. Moosbrugger M., Schwaha T., Walzl M.G., Obst M., Ostrovsky A.N. 2012. The placental analogue and the pattern of sexual reproduction in the cheilostome bryozoan Bicellariella ciliata (Gymnolaemata). Frontiers in Zoology 9: 29. DOI:10.1186/1742-9994-9-29.
  8. Ostrovsky A.N., Porter J.S. 2011. Pattern of occurence of supraneural coelomopores and intertentacular organs in gymnolaemate bryozoans and its evolutionary implications. Zoomorphology 130:115. DOI: 10.1007/s00435-011-0122-3
  9. Ostrovsky A.N., Popov I.Y. 2011. Rediscovery of the largest population of the freshwater pearl-mussel in the Leningrad oblast (north-west Russia). Aquatic Conservation: Marine and Freshwater Ecosystems 21(2): 113121. DOI: 10.1002/aqc.1164
  10. Ostrovsky A.N., Nielsen C., Vavra N., Yagunova E.B. 2009. Diversity of the brooding structures in calloporid bryozoans (Gymnolaemata: Cheilostomata): comparative anatomy and evolutionary trends. Zoomorphology 128(1): 1335. DOI: 10.1007/s00435-008-0070-8
  11. Ostrovsky A.N., Gordon D.P., Lidgard S. 2009. Independent evolution of matrotrophy in the major classes of Bryozoa: transitions among reproductive patterns and their ecological background. Marine Ecology Progress Series 378: 113124. DOI: 10.3354/meps07850
  12. Ostrovsky A.N., ODea A., Rodrigues F. 2009. Comparative anatomy of internal incubational sacs in cupuladriid bryozoans and the evolution of brooding in free-living cheilostomes. Journal of Morphology 270: 1413-1430. DOI: 10.1002/jmor.10767
  13. Cheetham A.H., Sanner J., Taylor P.D., Ostrovsky A.N. Morphological differentiation of avicularia and the proliferation of species in mid-Cretaceous Wilbertopora Cheetham, 1954 (Bryozoa: Cheilostomata). Journal of Paleontology 80(1): 49-71. DOI: 10.1666/0022-3360(2006)080[0049:MDOAAT]2.0.CO;2
  14. Ostrovsky A.N., Taylor P.D. 2005. Brood chambers constructed from spines in fossil and Recent cheilostome bryozoans. Zoological Journal of the Linnean Society 144: 317-361. DOI: 10.1111/j.1096-3642.2005.00179.x
  15. Ostrovsky A.N. 1998. Comparative studies of ovicell anatomy and reproductive patterns in Cribrilina annulata and Celleporella hyalina (Bryozoa: Cheilostomatida). Acta Zoologica 79(4): 287-318. DOI: 10.1111/j.1463-6395.1998.tb01280.x
  16. Current research:

    • Evolution of reproductive patterns in the marine colonial epibionts
    • Bryozoan life cycles (examples from the White Sea)
    • Systematics and biogeography of the tropical cheilostome bryozoans
    • Ultrastructure of placental analogues in Bryozoa
    • Comparative mioanatomy of marine bryozoans
    • Comparative larval morphology and evolution in marine bryozoans
    • Biology of the freshwater pearl mussel
    • Comparative avicularian neuro- and mioanatomy in marine bryozoans

    Research planned:
    Ultrastructure of the placental analogues in Bryozoa
    Avicularian neuroanatomy
    Bacterial symbionts in Bryozoa

    Based on:
    St Petersburg State University, St Petersburg, main building
    Marine Biological Station of the St Petersburg State UNiversity, White Sea, Republic of Karelia

    White Sea
    Black Sea
    North Sea

    Links and partners:
    The Natural History Museum, London
    University of Vienna
    New Zealand Institute of Water and Atmospheric Research
    Smithsonian Tropical Research Institute
    International Bryozoology Association

    From left to right. Bryozoans of White Sea. Flustrellidra hispida: fragment of colony, Smittoidea propinqua: zooids with embryons in ovicells, Tegella armifera: colony on laminaria, Securiflustra securifrons: fragment of colony, Celleporella hyalina: fragment of colony with ovicells, Tegella armifera: zooids with eggs and embryons in ovicells, Electra pilosa: part of the colony with inverted polypids, Chartella membranaceotruncata: fragment of colony with embryons in ovicells, Flustrellidra hispida: fragment of colony with inverted polypids.

    Left to right: A. Ostrovslky, D. Matvienko, O. Kotenko, E. Belikova, A. Vyshnyakov, E. Shevchenko, U. Nekludova, K. Shunkina, U. Nekludova and E. Shevchenko, N. Karagodina, A. Kvatch, O. Kotenko, K. Serova, V. Kutjumov

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