Sphaerospora molnari new species myxozoa myxosporea an agent of gill skin and blood sphaerosporosis of common carp cyprinus carpio in europe

Lom, J.; Dykova, I.; Pavlaskova, M.; Grupcheva, G.

Parasitology 86(Part 3): 529-536


S. molnari sp. nov. is describved from the gills, skin and nasal pits of yearling carp (C. carpio L.) from ponds in the South Bohemian pond region of Czechoslovakia and 1 infected specimen from the Danube River in Bulgaria. Small vegetative stages, often massively pervading the infected tissue, produce 1 spore each. Spores are sub-spherical, 10.3 .times. 10.5 .mu.m 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. S. chinensis comb. nov. is proposed for S. branchialis Lee and Nie in Chen (1973), pre-occupied by S. branchialis Razmashkin and Skripchenko, 1967.