Zeitschrift für Parasitenkunde

, Volume 68, Issue 3, pp 269–277 | Cite as

Biology and histopathology ofThelohanellus nikolskii Achmerov, 1955 (myxosporea, myxozoa), a protozoan parasite of the common carp (Cyprinus carpio)

  • Kalman Molnar


Thelohanellus nikolskii, a myxosporean originating from the Far East, arrived in Hungary through natural waters from neighbouring countries which it had originally reached because of the introduction of the Amur wild carp.T. nikolskii is a specific parasite of carp which produces large cysts on the fins of fry. The cysts usually appear on the fish at the beginning of July, and in August and September cysts containing the mature spores burst. The cysts are easily seen even by the naked eye and are surrounded by a thick capsule composed of connective tissue strengthened by cartilaginous elements. Due to the breaking down of the fins the parasite has pathological significance in fry.


Connective Tissue Natural Water Common Carp Protozoan Parasite Large Cyst 
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. Achmerov ACh (1955) Ways of the origin ofMyxosporidia species of the genusThelohanellus Kudo from Amur wild carp (in Russian). Dokl. Akad Nauk SSSR 105:1129–1132Google Scholar
  2. Achmerov ACh (1960)Myxosporidia of fish in the basin of river Amur (in Russian). Ribnoe khozjajstvo vnutrennikh vodoemov Latvijskoj SSSR 5:239–308Google Scholar
  3. Bauer ON (1948) Parasites of fish in river Jenisej (in Russian). Izv VNIORH 27:97–156Google Scholar
  4. Debaissieux P (1925) Etudes sur les Myxosporidies III.Myxobolus notatus Mavor. Arch Zool Exp Gen 64: 353–385Google Scholar
  5. Hoffman GL, Putz RE (1971) Effect of freezing and aging on the spores ofMyxosoma cerebralis, the causative agent of salmonid whirling disease. Progr Fish-Culturist 33:95–98Google Scholar
  6. Homma Y, Tamura E (1976) Histological observations on the sporadic diseases found in the branchial region of fishes. Ann Rep Sado Marine Station, Niigata University 6:9–16Google Scholar
  7. Ivasik VM, Feduscak NJ, Maslennikova KI (1970) Über die parasitologische Situation in den Teichwirtschaften des Karpaten-Rayons. Z Fischerei NF 18:299–306Google Scholar
  8. Ivasik VM, Karpenko IM (1967) The change of parasite fauna ofCyprinus carpio haematopterus Tem. et Schl. at its introduction into fish ponds of the Ukraine (in Russian). Parazitologija 1:149–150Google Scholar
  9. Jeney G (1979) The occurrence ofThelohanellus dogieli Achmerov 1955 (Myxosporidia) on carp (Cyprinus carpio) in fish ponds in Hungary. Parasitol Hungarica 12:19–20Google Scholar
  10. Molnar K (1976) To the knowledge of the Monogenea-fauna in Hungary. Parasitol Hungarica 9:31–33Google Scholar
  11. Molnar K, Buza L (1975) Cestodosis of the common carp caused byKhawia sinensis in Hungary (in Hungarian). Halászat. Tudományos melléklet 21:24Google Scholar
  12. Molnar K, Kovacs-Gayer É (1982) The occurrence of two Far-East originThelohanellus (Myxosporidia) species in common carp populations of the Hungarian pond farms. Parasitol Hungarica 14:51–55Google Scholar
  13. Petrushevski GP, Bauer ON (1948) Parasitic diseases of fish in Sibiria and their economic and medical significance (in Russian). Izv VNIORH 27:195–216Google Scholar
  14. Shulman SS (1962) in: Bykhovsky BE: Key to the parasites of freshwater fishes of the USSR (in Russian). Publ House Acad Sci, Moscow-Leningrad 9: 197Google Scholar
  15. Shulman SS (1966) Myxosporidia of the fauna of the USSR (in Russian). Nauka Moscow-LeningradGoogle Scholar

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Kalman Molnar
    • 1
  1. 1.Veterinary Medical Research InstituteHungarian Academy of SciencesBudapestHungary

Personalised recommendations