Journal of Biotechnology & Biomaterials
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The previous studies indicated the dangerous effects γ-irradiation on one of the most economically important Japanese
fishes namely, Medaka (
). In the present work, erythrocytes alterations were recorded as hematological
bioindicators for γ-Irradiation.After exposure of medaka fish to two different doses of γ-radiation (2Gy and 10 Gy) many
red blood cells malformations were recorded in γ-Irradiated fishes in comparison with control fishes. Those malformations
as acanthocytes (Ac), crenated cells (Cr), rupture of cell membrane, Amoeboid RBCs shaped, sickle cells and drop like tail
in some RBCs. Also, the frequencies of those malformations were increased with γ-irradiation dose. No micronuclei were
reported in all groups but nuclear abnormalities were observed. It was concluded that, the γ-Irradiation caused erythrocytes
malformations in shape and number indicated its dangerous effects on medaka fish.
Alaa El-Din Hamid Seyed is a lecturer at Department of Zoology, Faculty of Science,ِ Assiut University. He completed his PhD in Zoology (Fish Biology), Faculty of
Science, Assiut University, 2011. He has published more than 20 research papers and reviewer of International
Journal of Fisheries and Aquaculture, International
Journal of Biochemistry and Biotechnology and Journal of Toxicology and Environmental Health Sciences
.His research interest is the study of the effects of pollution
(air, chemical and water) and it?s toxicity on fish.
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