Ultrastructural effects on gill tissues induced in red tilapia Oreochromis sp. by a waterborne lead exposure

Aldoghachi, M.A. and Sofian-Azirun, M. and Yusoff, I. and Ashraf, M.A. (2016) Ultrastructural effects on gill tissues induced in red tilapia Oreochromis sp. by a waterborne lead exposure. Saudi Journal of Biological Sciences, 23 (5). pp. 634-641. ISSN 1319-562X

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Official URL: https://doi.org/10.1016/j.sjbs.2015.08.004

Abstract

Experiments on hybrid red tilapia Oreochromis sp. were conducted to assess histopathological effects induced in gill tissues of 96 h exposure to waterborne lead (5.5 mg/L). These tissues were investigated by light and scanning electron microscopy. Results showed that structural design of gill tissues was noticeably disrupted. Major symptoms were changes of epithelial cells, fusion in adjacent secondary lamellae, hypertrophy and hyperplasia of chloride cells and coagulate necrosis in pavement cells with disappearance of its microridges. Electron microscopic X-ray microanalysis of fish gills exposed to sublethal lead revealed that lead accumulated on the surface of the gill lamella. This study confirmed that lead exposure incited a difference of histological impairment in fish, supporting environmental watch over aquatic systems when polluted by lead.

Item Type: Article
Uncontrolled Keywords: Oreochromis sp.; Lead histopathology; SEM-EDX gill
Subjects: Q Science > Q Science (General)
Q Science > QE Geology
Q Science > QH Natural history
Divisions: Faculty of Science > Dept of Geology
Faculty of Science > Institute of Biological Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Nov 2017 02:31
Last Modified: 10 Nov 2017 02:31
URI: http://eprints.um.edu.my/id/eprint/18208

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