Zeitschrift für Parasitenkunde

, Volume 48, Issue 3–4, pp 251–262 | Cite as

Ultrastructural studies of the cysticercoid of Moniezia expansa (Anoplocephalidae) with special reference to the development of the cyst

  • Jennifer Caley


Cysticercoids of the sheep tapeworm Moniezia expansa have been grown in oribatid mites in the laboratory. Three species of mite became infected: Xenillus tegeocranus, Platynothrus peltifer and Euzetes globulus, the latter not previously recorded as a host of anoplocephalines. Cysticercoids aged 15 and 28 weeks were examined with the electron microscope. Four distinct types of cells were found in the 15-week cysticercoid. Subsequent cyst development involves a transformation from a cellular to a mainly fibrous structure. The fibres, arranged in three layers, resemble collagen fibres described elsewhere. The outer epidermis of the cyst is replaced by an amorphous, electron-dense outer coat whose nature is unknown. The inner part of the cyst becomes condensed to a myelin-like structure. The scolex develops features characteristic of the adult tapeworm.


Collagen Electron Microscope Special Reference Collagen Fibre Distinct Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Allison, V. F., Ubelaker, J. E., Cooper, N. B.: The fine structure of the cysticercoid of Hymenolepis diminuta. II. The inner wall of the capsule. Z. Parasitenk. 39, 137–147 (1972)Google Scholar
  2. Ashhurst, D. E.: Fibroblasts—vertebrate and invertebrate. In: Cell structure and its interpretation (S. M. McGee-Russell and K. F. A. Ross, eds.), p. 237–249. London: Edward Arnold Ltd. 1968Google Scholar
  3. Balch, C. C., Campling, R. C.: Rate of passage of digesta through the ruminant digestive tract. In: Physiology of digestion in the ruminant (R. W. Dougherty, ed.), p. 108–123. London: Butterworths 1965Google Scholar
  4. Baron, P. J.: On the histology, histochemistry and ultrastructure of the cysticercoid of Raillietina cesticillus (Cestoda: Cyclophyllidae). Parasitology 62, 233–245 (1971)Google Scholar
  5. Bashkirova, E. J.: Contribution to the study of the biology of the tapeworm Anoplocephala perfoliata (Goeze, 1782) parasitic in the horse. Dokl. Akad. Nauk. SSSR 30, 576–578 (1941a)Google Scholar
  6. Bashkirova, E. J.: Biological study of Anoplocephala perfoliata (Goeze, 1782). Vest. sel'.-khoz. Nauki, Veterinariia 2, 57–67 (1941b) [In Russian]Google Scholar
  7. Caley, J.: The functional significance of scolex retraction and subsequent cyst formation in the cysticercoid larva of Hymenolepis microstoma. Parasitology 68, 207–227 (1974)Google Scholar
  8. Finean, J., Robertson, J.: Lipids and the fine structure of myelin. Brit. med. Bull. 14, 267–273 (1958)Google Scholar
  9. Freeman, J. A.: Cellular fine structure. New York: McGraw-Hill Inc. 1964Google Scholar
  10. Freeman, R. S.: The biology and life history of Monoecocestus Beddard, 1914 (Cestoda: Anoplocephalidae) from the porcupine. J. Parasit. 38, 111–129 (1952)Google Scholar
  11. Hartenstein, R.: Soil Oribatei. I. Feeding specifity among forest soil Oribatei (Acarina). Ann. ent. Soc. Amer. 55, 202–206 (1962)Google Scholar
  12. Kassai, T., Mahunka, S.: Studies on tapeworms in ruminants. II. Oribatids as intermediate hosts of Moniezia species. Acta vet. Acad. Sci. hung. 15, 227–249 (1965)Google Scholar
  13. Lumsden, R. D., Byram, J.: The ultrastructure of cestode muscle. J. Parasit. 53, 326–342 (1967)Google Scholar
  14. Potemkina, V. A.: Development of Moniezia benedini (Moniez, 1879) in intermediate and definitive hosts. In: Contributions to Helminthology, S. N. Boev, N. K. Anan'ev, B. I. Bondareva and K. K. Karabaev, eds.), p. 296–303, 1958. English Translation, Jerusalem: Israel Programme for Scientific Translations 1969Google Scholar
  15. Rayski, C.: The bionomics of the larval stages of Moniezia and other helminth parasites present in pastures; being an account of oribatid mites and their relation to anoplocephaline cestodes in Scottish pastures. Ph. D. Thesis, Edinburgh 1945Google Scholar
  16. Rees, F. G.: The ultrastructure of the cysticercoid of Tatria octacantha Rees, 1973 (Cyclophyllidea: Amabiliidae) from the haemocoele of the damsel-fly nymphs Pyrrhosoma nymphula, Sulz and Enallagma cyathigerum, Charp. Parasitology 67, 85–103 (1973)Google Scholar
  17. Sengbusch, H. G.: Studies on the life history of three oribatid mites with observations on other species (Acarina, Oribatei). Ann. ent. Soc. Amer. 47, 646–667 (1954)Google Scholar
  18. Stunkard, H. W.: The life cycle of anoplocephaline cestodes. J. Parasit. 23, 569 (1937)Google Scholar
  19. Stunkard, H. W.: The development of Moniezia expansa in the intermediate host. Parasitology 30, 491–501 (1938)Google Scholar
  20. Stunkard, H. W.: Studies on the life history of the anoplocephaline cestodes of hares and rabbits. J. Parasit. 27, 299–325 (1941)Google Scholar

Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • Jennifer Caley
    • 1
  1. 1.School of Biological SciencesUniversity of East AngliaNorwichU.K.

Personalised recommendations