A contribution on myxosoma Infection in Cultured Oreochromis niloticus in Lower Egypt

Heavy infection with myxosoma spp. has been recorded among cultured Oreochromis niloticus from Sharkiya governorate at Lower Egypt. Prevalence of the infection exceeded 80 % of all examined fish. Head cysts and hole in the head like lesions have been recorded among all examined fish. The causative agent "myxosoma" has been identified using classical taxonomical and histopathological techniques. The genetic non- relatedness of the salmonid Myxosoma cerebralis to the African cichlid myxosoma spp has been confirmed using a polymerase chain reaction (PCR) involving a specific primer of the gene encoding 18-S ribosomal RNA of M. cerebralis. (Nature and Science. 2006;4(4):40-46).

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