John Wiley & Sons, Ltd.

Effects of fluoride on growth, body composition and serum biochemical profile in a freshwater teleost, Cyprinus carpio

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Fluoride is ubiquitously distributed in natural waters. Elevated fluoride may cause histopathological changes and induce oxidative stress in the gills of the common carp (Cyprinus carpio). The present study further evaluates the effects of fluoride on growth performance, body composition and biochemical measurements of C. carpio. Our results showed that food intake, growth, serum osmolality, body composition, and biochemical measures in the blood were affected by fluoride. Weight gain rate and specific growth rate in the exposed fish decreased compared with those of the control fish. Levels of crude protein and crude lipids were reduced the fluoride exposed fish. The major ion levels in the serums of fluoride‐exposed fish were severely disturbed, resulting in a lower osmolality. All the biochemical parameters measured in the blood were affected by the exposure to fluoride. Total protein, albumin, globulin and glucose in fish exposed to 63.6, 77.7 and 124.4 mg/L were lower than those in the control fish. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were markedly increased in exposed fish compared to the control ones. Taken together, exposure to fluoride caused a suite of detrimental effects in C. carpio, which might lead to a decrease in growth and food utilization efficiency. Our results implied that high levels of fluoride could pose a threat to carp in the field. Environ Toxicol Chem © 2013 SETAC

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