Dovgal I. V., Gavrilova N. A. Diversity and functions of loricae in ciliates (Ciliophora). Marine Biological Journal, 2018, vol. 3, no. 3, pp. 13-21. https://doi.org/10.21072/mbj.2018.03.3.02



The article focused on morphological peculiarities, chemical composition and function of the loricae in ciliates. Pseudochitinous (tectinous), hyaline and mucopolysaccharide loricae differ by chemical composition. There are also composite (pseudochitinous + mucopolysaccharide) and agglutinated loricae. The morphological features and associated protective properties of loricae and semi-loricae of sessile ciliates are also discussed. The increase in floatability of cells has been reported in literature as the main function of mucopolysaccharide and hyaline loricae in planktonic ciliates. It is the authors’ opinion that the main function of the lorica is to prevent the contact of extrusomes or other capturing organelles of unicellular predators or parasites from the cellular membrane of ciliates. It is also assumed that another important function of the semi-loricae and loricae in sessile ciliates is to protect joints between their stalk and zooid from hydrodynamic loads.


I. V. Dovgal



N. A. Gavrilova




Agatha S., Laval-Peuto M., Simon P. The tintinnid lorica. In: The biology and ecology of tintinnid ciliates: models for marine plankton / J. R. Dolan, D. J. S. Montagnes, S. Agatha, D. W. Coats, D. K. Stoecker (Eds). Hoboken : Wiley, 2012, pp. 17–41.

Burkovsky I. V. Ekologiya svobodnozhivushchikh infuzorii. Moscow : Moscow University Press, 1984, 208 p. (in Russ.).

Dovgal I. V. Problema proiskhozhdenija rakoviny u sidyachikh infuzorij v svyazi s predstavleniyami A. A. Lyubisheva o preadaptatciyakh. In: Teoreticheskie problemy evolyutcii i ecologii: materialy vsesouyuz. konf., posvyashch. 100-letiyu so dnya rozhd. A. A. Lyubishcheva. Tolyatti : IEVB, 1991, pp. 71–75. (in Russ.).

Dovgal I. V., Kochin V. A. Fluid boundary layer as an adaptive zone for sessile protists. Zhurnal obshchej biologii, 1997, vol. 58, no. 2, pp. 67–74.

Dovgal I. V., Pesic V. First records of ciliate suctorian epibionts on Hydraena (Coleoptera) from South Korea. Ecologica Montenegrina, 2014, vol. 1, no. 1, pp. 1–5.

Dovgal I. V. The origin and evolution of the adhesive organelles in infusoria (Ciliophora). Vestnik zoologii, 1998, vol. 32, no. 1–2, pp. 18–29. (in Russ.).

Dovgal I. V. Fauna Ukrainy: in 40 vol. Vol. 36: Ciliates – Ciliophora. Iss. 1: Class Suctorea. Kiev : Naukova dumka, 2013, 267 p. (in Russ.).

Fonda Umani S., Beran A., Parlato S., Virgilio D., Zollet T., Olazabal A. D., Lazzarini B., Cabrini M. Noctiluca scintillans Macartney in the Northern Adriatic Sea: Long-term dynamics, relationships with temperature and eutrophication, and role in the food web. Journal of Plankton Research, 2004, vol. 26, iss. 5, pp. 545–561. https://doi.org/10.1093/plankt/fbh045.

Gajewskaja N. S. Zur Oekologie, Morphologie und Systematik der Infusorien des Baikalsee. Stuttgart, Schweizerbart, 1933, bd. 32, heft 1–2, 298 s. (Zoologica, 1933, heft 83). (in German).

Ignatyev S. M., Кlimova T. N., Melnikov V. V., Vdodovich I. V., Galagovec E. A., Gubanov V. V., Datsyk N. A. Monitoring sostoyaniya planktonnogo soobshchestva u beregov Kryma v zimnii period. Sistemy kontrolya okruzhayushchei sredy, 2016, iss. 4 (24), pp. 100–111. (in Russ.).

Jankowski A. V. Novye rody simbiontnykh prosteishykh fauny Bajkala. In: Novoe o faune Bajkala / Galasij G. I. (Ed.). Novosibirsk : Nauka, 1982, pp. 25–32. (in Russ.).

Jankowski A. V. New and little known genera of ciliated protozoa (phylum Ciliophora). Trudy Zoologicheskogo instituta, 1986, vol. 144, pp. 72–88. (in Russ.).

Kofoid C. A., Campbell A. S. The Ciliata: The Tintinnoinea. Bulletin of the Museum of Comparative Zoology at Harvard College, 1939, vol. 89, pp. 1–473.

Lynn D. H. The ciliated Protozoa. Characterization, classification and guide to the literature. 3rd ed. Springer, 2008, 605 p. https://doi.org/10.1007/978-1-4020-8239-9.

Mayen-Estrada R., Clamp J., Dovgal I., Romero-Mayen V. Some details of the lorica aperture of Lagenophrys discoidea (Peritrichia, Lagenophryidae) with scanning electron microscopy, and notes on its geographic distribution. In: Final Programme and Abstracts of VII European Congress of Protistology (Seville, Spain, 5–10 Sept., 2015). Seville : Federation of European Protistological Societies, 2015, pp. 331.

Matthes D., Guhl W. Systematic, Anpassungen und Raumparasitismus auf Hydrophiliden lebender operculariformer Epistyliden. Archiv für Protistenkunde, 1975, bd. 117, heft 1/2, ss. 110–186. (in German).

Mikryukov K. A. Tcentrokhelidnye solnechniki (Centroheliozoa). Moscow : KMK, 2002, 136 p. (in Russ.).

Montagnes D. J. S., Dower J. F., Figueiredo G. M. The protozooplankton-ichthyoplankton trophic link: An overlooked aspect of aquatic food webs. Journal of Eukaryotic Microbiology, 2010, vol. 57, iss. 3, pp. 223–228. https://doi.org/10.1111/j.1550-7408.2010.00476.x.

Pierce R. W., Turner J. T. Ecology of planktonic ciliates in marine food webs. Reviews in Aquatic Sciences, 1992, vol. 6, pp. 39–181.

Sato N. E., Hernandez D., Vinas M. D. Feeding habits of Noctiluca scintillans in coastal waters off Buenos Aires Province, Argentina. Latin American Journal of Aquatic Research, 2010, vol. 38, iss. 3, pp. 403–412. URL: http://www.rlajar.equipu.cl/index.php/rlajar/article/viewFile/112/vol38-issue3-fulltext-5.

Scheubel J. Die sessilen Ciliaten unserer Suswasserfische unter besonderer Berucksichtigung der Gattung Apiosoma Blanchard. Zoologische Jahrbücher. Abteilung für Systematik, Ökologie und Geographie der Tiere, 1973, bd. 100, ss. 1–63. (in German).

Seravin L. N. Nekotorye gidrodinamicheskie aspekty dvizheniya resnichnykh infusorii. Vestnik Leningradskogo universiteta, Seriya Biologiya, 1970, iss. 4, pp. 41–47. (in Russ.).

Silvester N. R., Sleigh M. A. The forces influencing on microorganisms at surfaces in flowing water. Freshwater Biology, 1985, vol. 15, iss. 4, pp. 433–448. https://doi.org/10.1111/j.1365-2427.1985.tb00213.x.

Sinyukova V. I. O pitanii lichinok nekotorykh litoral’nykh ryb v Sevastopolskoj bukhte. Trudy Sevastopolskoj biologicheskoj stantcii, 1960, vol. 13, pp. 254–268. (in Russ.).

Wessenberg H., Antipa G. Capture and ingestion of Paramecium by Didinium nasutum. Journal of Eukaryotic Microbiology, 1970, vol. 17, iss. 2, pp. 250–270. https://doi.org/10.1111/j.1550-7408.1970.tb02366.x.

Zaika V. E., Kovalev A. V., Pavlova N. V. Pitanie planktonnykh zhyvotnykh Sredizemnogo morya. In: Biologicheskaya struktura i produktivnost’ planktonnykh soobshchestv Sredizemnogo morya / V. E. Zaika (Ed.). Kiev : Naukova dumka, 1975, pp. 112–123. (in Russ.).


The literary data analysis was made within the framework of research assignment of Kovalevsky Institute of Marine Biological Research RAS No. AAA-A18-118020890074-2. The original observations were partially supported by a grant of Ministry of Education of the Russian Federation No. 14W03.31.0015.



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