Study on Gill Tissue Lesions in Kutum (Rutiluskutum) Fry During Exposure to Heavy Metals, Iron and Zinc

Inroduction & Objective This studyaimed to investigate the effects of heavy metals such as iron and zinc on the gills of fish Rutiluskutum.Inthis regard
120kutum were prepared with laboratory conditions testing in 30 days at concentrations of FeCl2 19.5 mg/L and ZnCl2 3.9 mg/L.Tissue samples were caught at three periods of 7, 15 and 30 days.
Results The results indicate that with the progresses of exposure time for iron, damage to gill tissue were more severed such as hypere mia and hemorrhage, fractures and connectivity of secondary lamella and secondary lamella shortening, bladegill, lamella of swollen multi-cellular. So in 30 days , the maximum deta chmentw as seen in primary and secondary lamella.
The amount of gill tissue damage of various concentrations metals were as follows: Fe>Zn respectively and in zinc treatment was increased.