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1- 1- Faculty of Fisheries and Environmental sciences, Gorgan University of Natural Resources and Agricultural Sciences, Gorgan, Iran , mna.hasankhany@gmail.com
2- Department of Immunology and Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran. Mycology Research Center, University of Tehran, Tehran, Iran
3- 1- Faculty of Fisheries and Environmental sciences, Gorgan University of Natural Resources and Agricultural Sciences, Gorgan, Iran
2- Department of Immunology and Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran. Mycology Research Center, University of Tehran, Tehran, Iran
3- 1- Faculty of Fisheries and Environmental sciences, Gorgan University of Natural Resources and Agricultural Sciences, Gorgan, Iran
Abstract: (118 Views)
In this study, the effect of poison to salinity were exposed on gill tissue of common carp (C. carpio). Based on this, 250 common carp fry with an average weight of 21±2g were distributed in four treatments each with three repetitions including: salinity zero, 4 ppt, 8 ppt and 12 ppt, were distributed for a period of 7 d. then one group was placed for 4 d in exposure to pesticide with an acute concentration of 150 ppm chlorpyrifos with formulation of 40.8% EC and the second group was placed for 7 d in the with sub-acute concentration of 15 ppm chlorpyrifos. Histopathology of Gill tissue showed that the poison and salinity have such injuries as epithelial hypertrophy, lamellar aneurism, secondary connecting adjacent blades, distal hyperplasia, epithelial lifting, leukocyte infilt and hyperplasia. Gill histopathological result showed that at high concentrations, Epithelial hypertrophy, Distal hyperplasia and Lamellar fusion, versus harm in low concentrations to form Lamellar aneurism, Epithelial lifting and the Leukocyte infilt. Therefore, these pathological indicators can be used as biomarkers.
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