LIGHT AND ELECTRON MICROSCOPICAL OBSERVATIONS ON MYXOSPORIDIA IN NILE CATFISH, CLARIAS LAZERA
Afifi, S., Farid R., N., Marwan, A., Hassanein, A. (1999). LIGHT AND ELECTRON MICROSCOPICAL OBSERVATIONS ON MYXOSPORIDIA IN NILE CATFISH, CLARIAS LAZERA. EKB Journal Management System, 41.2(82), 88-114. doi: 10.21608/avmj.1999.182675
S.H. Afifi; Nadia Farid R.; Aziza Marwan; A.M. Hassanein. "LIGHT AND ELECTRON MICROSCOPICAL OBSERVATIONS ON MYXOSPORIDIA IN NILE CATFISH, CLARIAS LAZERA". EKB Journal Management System, 41.2, 82, 1999, 88-114. doi: 10.21608/avmj.1999.182675
Afifi, S., Farid R., N., Marwan, A., Hassanein, A. (1999). 'LIGHT AND ELECTRON MICROSCOPICAL OBSERVATIONS ON MYXOSPORIDIA IN NILE CATFISH, CLARIAS LAZERA', EKB Journal Management System, 41.2(82), pp. 88-114. doi: 10.21608/avmj.1999.182675
Afifi, S., Farid R., N., Marwan, A., Hassanein, A. LIGHT AND ELECTRON MICROSCOPICAL OBSERVATIONS ON MYXOSPORIDIA IN NILE CATFISH, CLARIAS LAZERA. EKB Journal Management System, 1999; 41.2(82): 88-114. doi: 10.21608/avmj.1999.182675

LIGHT AND ELECTRON MICROSCOPICAL OBSERVATIONS ON MYXOSPORIDIA IN NILE CATFISH, CLARIAS LAZERA

Assiut Veterinary Medical Journal
Article 7, Volume 41.2, Issue 82, July 1999, Page 88-114  XML PDF (7.82 MB)
Document Type: Research article
DOI: 10.21608/avmj.1999.182675
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Authors
S.H. Afifi1; Nadia Farid R.2; Aziza Marwan3; A.M. Hassanein3
1Dept. of Pathology, Fac. Vet. Med., Assiut Univ., Assiut, Egypt.
2Dept. of Zoology, Fac. Science, Ain Shams University, Cairo, Egypt.
3Dept. of Zoology, Fac. Science, Assiut Univ., Assiut, Egypt
Abstract
Parasitological survey on myxosporidia protozoal infestation in Nile Catfish, Clarias lazera was conducted during the period of 1995-1997. The study showed that 171 fish out of 206 (83.1%) were infested with more than one species of myxosporidia. The highest prevalence of infestation was observed in Autumn (93.6%) and decreased to 69.2% during summer. The secondary Respiratory Organ (SRO), posterior kidneys, livers spleens and ovaries of infested and non-infested fish were fixed in Bouin's fixative, processed and examined by light microscopy. Histopathological alterations induced by Henneguya branchilis in the SRO, Myxobolus lazeri in the posterior kidneys, Myxosoma clarii in the livers, and Myxobolus clarii in the spleens and ovaries were described. Infested SRO, posterior kidneys and ovaries were fixed in 5% cold glutraldehyde, dehydrated, embedded in Epon 812 and examined by Joel CXII 100 transmission electron microscopy. The significanse of these results regarding the host-parasite relationship was discussed.
Keywords
Key words: Myxospridia; Nile Catfish
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