Pramita Adi Listiyani, .- and Miftachul Shobirin, .- and Eka Novianti, .- and Bambang Irawan, .- and Sucipto Hariyanto, .- and Agoes Soegianto, .- (2017) Effect of Cd on serum osmolality, ion levels and hematological parameters of tilapia (Oreochromis niloticus) at different salinity levels. Zoology and Ecology, 28 (3). pp. 205-212. ISSN 21658013, 21658005

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Abstract

Effects of cadmium on serum osmolality, ion levels and hematological parameters of tilapia (Orechromis niloticus) were evaluated at different salinities. Serum osmolalities (SOs) in fish unexposed to Cd (0 mg l −1 ) and exposed to 2.5 mg Cd l were not significantly different at salinities of 0, 5 and 10 g l −1 −1 −1 , while at 15 g l , SO was significantly higher than at 0, 5 and 10 g l−1 + . Levelsof Na − and Cl in serum at salinities of 5, 10 and 15 g l were not significantly different; but weresignificantly higher than those at 0 g l −1 with and without Cd. In media without Cd, the lowest level of K −1 at 0, 5 and 10 g l + in serum occurred at 15 g l -1 salinity, whereas levels of K + in Cd-exposed fish at all salinities were not significantly different. At 0 g l −1 were not significantly different. The levels of K + salinity, hemoglobin, red blood cells, and hematocrit in Cd-exposed fish were significantly lower than controls. At salinities of 5, 10 and 15 g l−1 , levels incontroland Cd-exposedfish were not significantly different indicating that higher salinity prevented Cd-induced osmotic imbalance and hematological alterations.−1

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