Accumulation of Chromium in Liver Gill and Muscle Tissues of Orechromis niloticus
Çiftçi, Nuray | Cicik, Bedii | Ay, Özcan
The aim of the present study was to determine the levels of chromium in the liver, gill and muscle tissues of Oreochromis niloticus after exposing the animals to 1.0, 2.0 and 4.0 ppm chromium over 96 h. Metal levels in the tissues studied were determined using atomic absorbrtion techniques. Although, some behavioral disturbances were observed in the chromium exposed fish at the beginning of experiments, no mortalities were observed at the end of 96 h. Exposure to chromium increased tissue levels of the metal except the muscle tissue while tissue accumulation increased with increasing concentration of the metal in the medium. Maximum accumulation was observed in the gill tissue at the lowest concentration tested, whereas accumulation was higher in the liver tissue at 2.0 and 4.0 ppm ...
EFFECTS OF LEAD CONCENTRATIONS ON SERAPARAMETERS AND HEMATOCRIT LEVELS IN Anguilla anguilla Linnaeus 1758
Çiftçi, Nuray | Cicik, Bedii | Ay, Özcan
The effects of lead on sera glucose, protein and cholesterol concentrations and on hematocrit levels of Anguilla anguilla exposed to 0.06 and 0.12 ppm lead were studied over 15 and 30 days. Sera parameters and hematocrit levels were determined by spectrophotometric and microhematocrit methods, respectively. No mortality was observed during the experiments. Sera glucose and protein levels showed a linear increase and a decrease respectively under the effect of lead. Sera cholesterol levels decreased compared to control over 15 days of exposure to both concentrations and this decrease was not significant between the concentrations on day 30. Lead concentrations 0.12 ppm lead did not cause any variation in hematocrit level, while 0.06 ppm lead increased it compared to control.. Changes...
EFFECTS OF COPPER AND LEAD ON SOME HEMATOLOGICAL PARAMETERS OF Oreochromis niloticus
Çiftçi, Nuray | Karayakar, Fahri | Ay, Özcan | Cicik, Bedii
Effects of sub-lethal concentrations of copper and lead on hematocrit and mean cell volume (MCV) levels and on erythrocyte numbers, erythrocyte and erythrocyte nucleus areas were determined after exposing Oreochromis niloticus to 4 ppm Cu and 0.2 ppm Pb over 7, 15 and 30 days. Micro-hematocrit methods were adopted in determining hematocrit levels and microscopic methods were used to determine MCV, erythrocyte numbers, erythrocyte and erythrocyte nucleus areas. Hematocrit and MCV levels and erythrocyte and nucleus areas increased significantly (P
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 ZINC AND CADMIUM ON CONDITION FACTOR, HEPATOSOMATIC AND GONADOSOMATIC INDEX OF Oreochromis niloticus
Çiftçi, Nuray | Ay, Özcan | Karayakar, Fahri | Cicik, Bedii
Effects of Zn and Cd on condition factor (CF), hepatosomatic (HIS) and gonadosomatic (GSI) of Oreochromis niloticus, after exposing the animals to 10 % of their LC50 values, namely 6.0 ppm Zn and 1.6 ppm Cd, over 7, 15, and 30 days. Standard mathematical formulations were used in determining the mentioned parameters. Cadmium, which is a toxic metal, increased GSI and decreased HSI and CF at the beginning of the experiments. The decrease in HSI and CF continued with increasing exposure periods. Zinc, however, decreased all three parameters compared with control at the end of experiments (P
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
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
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.