Xenobiotics are
synthetic compounds foreign to the biological system. They often retain their
qualities in the aquatic environment with the ability
to cause oxidative stress in these organisms by activating the endogenous
production of reactive oxygen species (ROS).
Overloading of
the estuaries with contaminants for a longer period has an impact on fish
production. The grey mullet (Mugil cephalus) is capable of concentrating
contaminants and is considered suitable for biomarker studies.
Brain is an
appropriate organ for the study of the effects of xenobiotics due to its
morphological heterogeneity, metal accumulating capacity and susceptibility to
histopathological damage by metals.
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