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A Review on Histopathological Alterations Induced by Heavy Metals (Cd, Ni, Cr, Hg) in Different Fish Species

A Review on Histopathological Alterations Induced by Heavy Metals (Cd, Ni, Cr, Hg) in Different Fish Species

Safia Bibi1, Saima Naz1*, Saba Saeed1, Ahmad Manan Mustafa Chatha2

1Department of Zoology, The Government Sadiq College Women University, Bahawalpur- 63100, Pakistan.
2Department of Entomology, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur- 63100, Pakistan.
 
Corresponding Author: Saima Naz
saima.naz@gscwu.edu.pk

ABSTRACT

Industrial, domestic and other human activities are responsible for heavy metal toxicity of aquatic bodies. Metals are the major stimulators for variety of diseases in aquatic organisms mainly fishes. Chromium (Cr), mercury (Hg), nickel (Ni) and cadmium (Cd) causes histopathological variations and several diseases in various fishes of Pakistan. Extensive histopathological variations in gills, liver, kidney and skin of different fishes were noticed when exposed to heavy metals, thus indicating severity of heavy metal toxicity. The current study was focused on the toxicological effect of Cr, Hg, Ni and Cd in different type of fishes and it would be useful for the scientific community to restore different metals contaminating water. 
 
Novelty Statement | Histopathological alterations in target fish organs functioned as fundamental indicator to assess metal toxicity in different fish species as it provides accurate data on effects of different contami-nants on fish. Hence, histopathology must be consider to monitor contaminated aquatic systems.
 

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Pakistan Journal of Zoology

August

Vol. 53, Iss. 4, Pages 1201-1601

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