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Structure of capsule around acanthocephalan Corynosoma strumosum from uncommon paratenic hosts—lizards of two species

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Micromorphology and ultrastructure of capsule forming around acanthocephalan Corynosoma strumosum in uncommon paratenic hosts—lizards Lacerta agilis and Lacerta viridis—have been studied. Experimental infestation of the lizards by acanthocephalans obtained from naturally infested sea fishes showed that only small amount of parasites occurred in the intestine of the host was able to migrate into body cavity and to be encapsulated. Micromorphology of capsules of different ages from different species of lizards and micromorphology and ultrastructure of capsules at the age of 1.5 and 10 days appeared to be similar. In the capsule’s structure cells of inflammatory rank were prevailing: mononuclear and multinuclear macrophages, eosinophils, and basophils. Fibroblasts were not numerous and were located only in the outer part of a capsule; exocellular collagen fibers were absent. Inflammatory character of capsule confirms the idea that lizards are unsuitable paratenic hosts for corynosomes.

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  1. 1.

    Taxonomical belonging of acanthocephalan S. picae was specified by O. Amin et al. (2010).


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The work was supported by grants of RFBR-FEB RAS (no. 09-04-98523) and FEB RAS (no. 09-III-A-06-218 and 11-III-B-06-128). The authors thank Ms. E. Schetinina for help in preparing the English version of the article. The work was carried out under the Russian–Ukraine research project “Ecological and morphological aspects of interrelationships of acanthocephalans with paratenic hosts” of Institute of Biological Problems of the North, Far East Branch of Russian Academy of Sciences and I.I. Schmalhausen Institute of Zoology, National Academy of Sciences, Ukraine.

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Correspondence to Ekaterina M. Skorobrechova.

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Skorobrechova, E.M., Nikishin, V.P. & Lisitsyna, O.I. Structure of capsule around acanthocephalan Corynosoma strumosum from uncommon paratenic hosts—lizards of two species. Parasitol Res 110, 459–467 (2012). https://doi.org/10.1007/s00436-011-2512-3

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  • Methylene Blue
  • Saffron
  • Body Cavity
  • Paratenic Host
  • Granular Endoplasmic Reticulum