The influence of trematode infection on the hemocyte composition in Planorbarius corneus (Gastropoda, Pulmonata)

Authors

  • G L Ataev Department of Zoology, Faculty of Biology, Herzen State Pedagogical University of Russia
  • E E Prokhorova Department of Zoology, Faculty of Biology, Herzen State Pedagogical University of Russia
  • I V Kudryavtsev Department of Immunology, Institute of Experimental Medicine, Saint-Petersburg, Russian Federation
  • A V Polevshchikov Department of Immunology, Institute of Experimental Medicine, Saint-Petersburg, Russian Federation

DOI:

https://doi.org/10.25431/1824-307X/isj.v13i1.164-171

Keywords:

snails, trematodes, granulocytes, hyalinocytes, defense reactions, phagocytosis

Abstract

Hemocytes are the main effector elements of gastropod anti-trematode defence reactions.
Elucidation of morphological and functional characteristics of hemocytes allows for better
understanding of gastropod resistance mechanisms. Hemocyte composition of Planorbarius corneus revealed types of cells: granulocytes and hyalinocytes, which differ in granularity, nucleus-tocytoplasm ratio and spreading compatibility. Flow-cytometric analysis suggested the presence of these cell types in the hemolymph of P. corneus and showed the differences in
granulocyte/hyalinocytes ratio in non-infected snails and snails infected with different trematodes - Cotylurus sp., Notocotylus sp., Plagiorchis sp. and Echinostoma sp. It was also shown that in snails with large shell diameter (34 - 37 mm), the ratio of cell types in the hemolymph is clearly biased in favour of granulocytes.

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Published

2016-05-16

Issue

Vol. 13 No. 1 (2016)

Section

Research Reports