Effects of Chromium on the Hematocrit Levels and Erythrocyte Numbers of Cyprinus carpio
Cicik, Bedii | Çiftçi, Nuray | Ay, Özcan
Changes in hematocrit levels and erythrocyte numbers of Cyprinus carpio were determined after exposing the animals to 0.5, 1.0 and 2.0 ppm chromium over 7, 15 and 30 days. Microhematocrit and hemocytometric methods were used for determining hematocrit levels and erythrocyte numbers respectively. No mortality was observed during the experiments. Hematocrit levels and erythrocyt numbers increased under the effect of metal on day 15. Hematocrit levels and erythtrocyte numbers decreased by increasing exposure periods except at 0.5 ppm chromium.
Accumulation of Chromium in Hepatopancreas Gill and Muscle Tissues of Callinectes sapidus
Çiftçi, Nuray | Cicik, Bedii | Ay, Özcan | Karayakar, Fahri | Karaytuğ, Sahire
Accumulation of chromium (VI) in hepatopancreas, gill and muscle tissues of Callinectes sapidus was studied after exposing the animals to 1.0, 2.0 and 4.0 ppm chromium (IV) over 96 hours. Tissue levels of the metal were determined using Atomic Absorbtion Spectrophotometric (AAS) methods. No mortality was observed in any concentration of chromium after 96 hours of exposure. Accumulation of chromium in hepatopancreas and gill tissues increased with increasing concentrations of the metal, whereas muscle accumulation was below detection limits of AAS at the concentrations tested. The following relationship was found among the tissues in accumulating chromium; Gill > Hepatopancreas > Muscle