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Sphaerospora molnari sp.nov. (Myxozoa:Myxosporea), an agent of gill, skin and blood sphaerosporosis of common carp in Europe

  • Jiří Lom (a1), Iva Dyková (a1), Milena Pavlásková (a1) and Ginka Grupcheva (a2)


Sphaerospora molnari sp.nov. is described from the gills, skin and nasal pits of yearling carp (Cyprinus carpio L.) from ponds in the South Bohemian pond region of Czechoslovakia and one infected specimen from the river Danube in Bulgaria. Small vegetative stages, often massively pervading the infected tissue, produce 1 spore each. Spores are sub-spherical, 10·3 × 10·5 μm in size, with almost spherical polar capsules of equal size. The polar filaments are wound in wide coils that are almost parallel with the longitudinal axis of the spore. There are 2 uninucleate sporoplasm cells. Developmental stages and spores are also found in circulating blood. In the gills, S. molnari invades stratified epithelium of gill filaments and secondary lamellae causing branchial lesions and must be regarded as a serious pathogen of yearling carp. A new name, Sphaerospora chinensis sp.nov. is proposed for S. branchialis Lee & Nie in Chen (1973), pre-occupied by S. branchialis Razmashkin and Skrip-chenko, 1967.



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Chen Chih, L. (1973). An Illustrated Guide to the Fish Diseases and Causative Pathogenic Fauna and Flora in the Hubei Province. pp. 456. Peking: Science Press.
Csaba, G. (1976). An unidentifiable extracellular sporozoan parasite from the blood of the carp. Parasitologia Hungarica 9, 21–4.
Dyková, I. & Lom, J. (1982). Sphaerospora renicola n.sp., a myxosporean from carp kidney and its pathogenicity. Zeitschrift für Parasitenkunde 68, 259–68.
Fujita, T. (1912). Notes on new sporozoan parasites of fishes. Zoologischer Anzeiger 39, 259–62.
Grassé, P.-P. & Lavette, A. (1978). La myxosporidie Sphaeromyxa sabrazesi et le nouvel embranchement des Myxozoaires (Myxozoa). Recherches sur l'état pluricellulaire primitif et considérations phylogénétiques. Annates des Science Naturelles, Zoologie 20, 193285.
Hámory, G. & Molnár, K. (1972). Egysejtü paraziták okozta ivadékbetegségek tógazdaságok-ban. Magyar Állatorvosok Lapja 27, 358–60.
Kashkovsky, V. V. (1965). Changes in the parasitofauna of fishes in Priklinsk lake in the course of a three-year period (1961–1963). Simpozium po boleznyam i parazitam ryb v vodokhranilish-chakh.Moskva, Leningrad;‘Nauka’, 12–13. (In Russian.)
Kovács-Gayer, E., Csaba, G., Békési, L., Bucsek, M., Szakolczai, J. & Molnár, K. (1982). A pontyivadék úszóhólyag-gyulladásának protozon-etiológiájára vonatkozó vizsgálatok. Magyar Állatorvosok Lapja 37, 405–6.
Kudo, R. (1919). Studies on Myxosporidia. Illinois Biological Monographs 5, no. 3 + 4, pp. 265.
Lom, J. & Dyková, I. (1980). Myxosporidózy a rozvoj rybnični produkce kapra. Veterinářstvi 30, 176–7.
Lom, J. & Dyková, I. (1983). Pathogenicity of some protozoan parasites of cyprinid fishes. Biologica Hungarica. (in the Press).
Lom, J., Dyková, I. & Lhotáková, Š. (1983). Fine structure of Sphaerospora renicola Dyková and Lom, 1983, a myxosporean from carp kidney and comments on the origin of pansporoblasts. Protistologica, (in the Press).
Molnár, K. (1978). Gill sphaerosporosis of pond fishes. 4th International Congress of Parasitology,19–26 August 1978, Warszawa. Short Communications, section C, 201–2.
Molnár, K. (1979). Gill sphaerosporosis in the common carp and grasscarp. Acta Veterinaria Academiae Scientiarum Hungaricae 27, 99113.
Molnár, K. (1980 a). Cutaneous sphaerosporosis of the common carp fry. Acta Veterinaria Academiae Scientiarum Hungaricae 28, 371–4.
Molnár, K. (1980 b). ‘Sphaerosporosis’, a new kidney disease of the common carp. In Fish Diseases (ed. Ahne, W.), pp. 157164. Berlin, Heidelberg and New York: Springer-Verlag.
Razmashkin, D. A. & Skripchenko, E. G. (1967). Fish diseases in pond fish husbandries of Western Siberia and Ural. Ozernoe i prudovoe khozyaístvo v Sibiri i na Urate. Tyumen, USSR. 25–7. (In Russian.)
Shulman, S. S. (1966). Myxosporidia of the Fauna of the USSR. Moskva-Leningrad: ‘Nauka’. pp 504. (In Russian.)
Thélohan, P. (1895). Recherches sur les Myxosporidies. Bulletin Scieniifique de la France et Belgique 26, 100294.

Sphaerospora molnari sp.nov. (Myxozoa:Myxosporea), an agent of gill, skin and blood sphaerosporosis of common carp in Europe

  • Jiří Lom (a1), Iva Dyková (a1), Milena Pavlásková (a1) and Ginka Grupcheva (a2)


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