Title: Bioremediation the toxic effect of mercury on liver histopathology, some hematological parameters and enzymatic activity in Nile tilapia, Oreochromis niloticus.
Abstract:The effect of mercury (Hg) toxicity, its impact on liver histopathology, hematological and biochemical changes in Nile tilapia (Oreochromius niloticus) were studied. The bioremediation effects of Spir...The effect of mercury (Hg) toxicity, its impact on liver histopathology, hematological and biochemical changes in Nile tilapia (Oreochromius niloticus) were studied. The bioremediation effects of Spirulina platensis were investigated through semi-static acute toxicity test developed with mercury chloride (HgCl2). Fingerlings (4.45±0.31 cm and 2.35 ±0.18g) were kept during 96 hours in 5-liter glass aquaria, according to the following mercury concentrations, set up in three replicates: 0.00 (control), 0.05, 0.10, 0.20, 0.30, and 0.40 mg Hg L -1 . The value of LC50-96h was estimated in 0.300 mg Hg L -1 . Fish exposed to Hg resulted in significant reduction (P< 0.05) of the erythrocyte count (RBCs), hemoglobin content (Hb) and haematocrit value (Hct). Significant changes in plasma aspartate aminotranseferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP) and acid phosphatase (ACP) were observed in fish exposed to Hg. Results also, indicated that Spirulina platensis was effective in removing Hg from water. Hg concentration in water was 69.880±0.156 µg L -1 and it decreased significantly (P< 0.05). The addition of dried Spirulina platensis improves the haematological parameters (RBCs, Hb and Hct) and ameliorates the toxic effect of Hg which indicating the capability of Spirulina platensis to chelate Hg from the media. (Hussein A. Kaoud, Khaled M.A. Mahran, Ahmed Rezk and Mahmoud A. Khalf. Bioremediation the toxic effect of mercury on liver histopathology, some hematological parameters and enzymatic activity in Nile tilapia, Oreochromis niloticus. Researcher. 2012;4(1):60-69). (ISSN: 1553-9865). http://www.sciencepub.net. 10Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 23
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