Brain Myxoboliasis of Common Carp

M. CIRKOVIC1, N. MILOSEVIC1, M. MARKOVIC2 and A. POTKONJAK1

1 Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovica 8, 21000 Novi Sad, Serbia
2 Faculty of Veterinary Medicine, University of Belgrade, Bulevar oslobodenja 18, 11000 Belgrade, Serbia

Abstract

CIRKOVIC, M., N. MILOSEVIC, M. MARKOVIC and A. POTKONJAK, 2010. Brain myxoboliasis of common carp. Bulg. J. Agric. Sci., 16: 263-265

The common carp (Cyprinus carpio) originating from Serbian fish ponds was examined for presence of Myxobolus encephalicus. The spores of M. encephalicus were present in blood vessels and meningeal layers. Its presence has been noted in 32-days old carp fingerlings, where in brain blood vessels predominate plasmodium parasites shape. Although, plasmodium does not effect blood vessels obturation as it is in the spore’s case, clinical signs which were similar to those in trout, occurred in the 15-30 days old carps. Fingerlings growth rate and conversion ranged normally. Blood test results in fingerlings with high number of spores in brain had similar values to those in unaffected fingerlings. The morbidity percentage was higher for carps up to the one-month old cultured in the ponds serving for older carp winter storage.

Key words: Myxobolus encephalicus, carp, Myxosporea, parasitoses

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