Accumulation and Effect of Chromium on Protein and Glycogen Levels of Palaemonetes pugio
Çiftçi, Nuray | Karaytuğ, Sahire | Karayakar, Fahri | Ay, Özcan | Cicik, Bedii
Total metal accumulation and the levels of total protein and glycogen were measured in Palaemonetes pugio after exposing the animals to 0.05, 0.1 and 0.2 ppm concentrations of chromium over 1, 7 and 15 days. Metal accumulation in tisuues was measured using atomic absorbtion spectrophotometric techniques and the levels of total protein and glycogen were determined Lowry and Anthron methods, respectively. No mortality was observed under the effect of chromium at any concentrations and exposure periods tested. Total metal accumulation increased with increasing concentrations of chromium at given exposure period while total protein and glycogen levels showed a decrease on day 15th compared with day 1.
Accumulation of copper in liver, gill and muscle tissues of Anguilla anguilla (Linnaeus, 1758).
Karayakar, Fahri | Cicik, Bedii | Ciftci, Nuray | Karaytug, Sahire | Ay, Özcan
Accumulation of copper in liver, gill and muscle tissues of Anguilla anguilla was studied after exposing the animals to 1.00, 2.00 and 4.00 ppm Cu over 96 h period. The levels of metals in the studied tissues were determined using atomic absorption spectrophotometric techniques. All the copper concentrations tested increased the tissue levels of the metal significantly in liver and gill tissues compared to control fish while metal accumulation in muscle tissue was statistically significant only at 4.00 ppm Cu. Accumulation of the metal in gill tissue showed no difference between the concentrations tested despite the differences observed in liver and muscle tissues. Accumulation of the metal was highest in liver tissue and lowest in muscle tissue.
Heavy metal levels in five species of fish caught from Mersin Gulf.
Karayakar, Fahri | Karaytug, Sahire | Cicik, Bedii | Ay, Özcan | Ciftci, Nuray
The aim of the present study was to determine the levels of cadmium, copper, zinc and chromium in the liver, gill and muscle tissues of some pelagic, benthopelagic and benthic fish species caught from Mersin Gulf and sold at Karaduvar Harbor. Pelagic species Sardinella aurita (Clupeidae), Liza ramado (Mugilidae), benthopelagic species Diplodus annularis (Sparidae) and benthic species Solea lutea (Soleidae) and Umbrina cirrosa (Sciaenidae) were selected as the study material. Atomic absorption spectrophotometric methods were applied in determining the tissue levels of metals. Metal levels showed tissue-dependent changes in the species studied. Pb and Cr levels were below detection limit; hence no comparison was made among the tissues. Cd, Cu and Zn levels were highest in the liver tissues a...
Effects of Cadmium and Cadmium Chitosan Mixture on Some Blood Parameters of Oreochromis niloticus
Çiftçi, Nuray | Karayakar, Fahri | Ay, Özcan | Karaytuğ, Sahire | Cicik, Bedii
Effects of 1 mgL-1 cadmium (Cd) and 1 mgL-1 Cd-10 mgL-1 chitosan(CT) mixture on hematocrit levels, erythrocyte numbers and on erythrocyte and erythrocyte nucleus areas were determined after exposing the animals to Cd and Cd-CT mixture over 7, 15 and 30 days. Microhematocrit and microscopic methods were used in determining the above blood parameters. No mortality was observed during the experiments. Hematocrit levels and erythrocyte numbers decreased whereas erythrocyte and erythrocyte nucleus areas increased in fish exposed to Cd alone compared with the control. No difference was observed, however, in the parameters studied in Cd-CT exposed fish compared with the control, except the erythrocyte nucleus area (P
Effects of cadmium on sera glucose and cortisol levels in Clarias gariepinus (Burchell, 1822).
Karaytuğ, Sahire | Karayakar, Fahri | Çiftçi, Nuray | Cicik, Bedii | Ay, Özcan
The effects of cadmium on sera glucose and cortisol levels of Clarias gariepinus was studied after exposing the animals to 0.25, 0.50 and 1.00 ppm Cd over 30 days. An autoanalyser was used in determining sera parameters. Sera glucose levels showed no significant difference between the control and 0.25 and 0.50 ppm Cd exposed fish whereas 1.00 ppm cadmium decreased sera glucose significantly (p