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    Acute exposure to boron in Nile tilapia (Oreochromis niloticus): Median-lethal concentration (LC50), blood parameters, DNA fragmentation of blood and sperm cells
    (Pergamon-Elsevier Science Ltd, 2018) Acar, Umit; Inanan, Burak Evren; Zemheri, Fahriye; Kesbic, Osman Sabri; Yılmaz, Sevdan
    Recently, Boron (B) contamination of aquatic ecosystem has received considerable critical attention due to its toxic effects at high concentrations on plants as well as animals. Previous studies on toxic effects of B have not dealt with DNA damages in blood and sperm cells of Nile tilapia (Oreochromis niloticus), together with blood parameters. This study consisted of two successive experiments purposes to determine these findings, including the median-lethal concentration (LC50) of B for Nile tilapia. In the first one, at 96 h, LC50 of B for Nile tilapia was 141.42 mg L-1 B. In the second one, Nile tilapia were treated with five elevated B concentrations (1, 5, 25, 50 and 100 mg L-1 B) and hematological, serum biochemical parameters, and DNA damages of Nile tilapia in these treatments were determined comparing with the control after 14 days of exposure. Hematological parameters (red blood cell count, hematocrit, and hemoglobin) were similar to each other in all groups while serum biochemical parameters (glucose, total protein, cholesterol, alkaline phosphatase, glutamic oxaloacetic transaminase, and glutamic pyruvic transaminase) in B treatments, especially in 50 and 100 mg L-1 B groups, were found significantly higher (P < 0.05). DNA fragmentation was detected in all blood cells in >= 25 mg L-1 B treatments, while all sperm cells in 100 mg L-1 B treatments. These results demonstrated the harmful effects of B at high concentration (50 and 100 mg L-1 B) on the DNA integrity of blood and sperm cells, and also the serum biochemical parameters. (C) 2018 Elsevier Ltd. All rights reserved.
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    Comparative study on haematological and biochemical parameters of two wild sparid fish species
    (Cahiers De Biologie Marine, 2019) Acar, Umit; Saoca, Concetta; Kesbic, Osman Sabri; Yılmaz, Sevdan; Yigit, Murat; Inanan, Burak Evren; Fazio, Francesco
    Different feeding habits may affect the blood parameters in fish species of the same family, even if they live in the same marine habitat. The aim of this study was to compare some haematological and biochemical parameters of two marine fish species of the same family, the saupe Sarpa salpa (Linnaeus, 1758) and the common two-banded seabream Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817), and to establish the similarities and differences between these species. For this purpose red blood cells (RBC), haemoglobin concentration (Hb), haematocrit (Hct), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), glucose (GLU), triglycerides (TRIG), cholesterol (CHOL), serum total protein (TP), albumin (ALB), globulins (GLO), aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) were determined for 30 fish from each species. Statistical analysis showed significant differences in some haematological and biochemical (RBC, Hb, Hct, TP, ALB, GLO, AST, ALT, ALP and LDH) parameters between the two species. Lower values of RBC, Hb and Hct were found in S. salpa in comparison with D. vulgaris. These differences could be attributed to the feeding behavior, life style and habitat adaptation of the different fish species of the same family and contribute to knowledge of reference values of blood parameters in Sarpa salpa and Diplodus vulgaris. No significant differences were found in MCV, MCH, MCHC and GLU, TRIG, CHOL.
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    Effects of dietary Bergamot (Citrus bergamia) peel oil on growth, haematology and immune response of European sea bass (Dicentrarchus labrax) juveniles
    (Wiley, 2019) Acar, Umit; Kesbic, Osman Sabri; Inanan, Burak Evren; Yılmaz, Sevdan
    The aim of the present study was to evaluate the effects of essential oil extracted from bergamot (Citrus bergamia) peel on growth performance and health status of European sea bass juveniles (5.10 + 0.05 g). Test diets supplemented with 0.0%, 0.5%, 1.0% and 2.0% bergamot peel oil (BPO0, BPO0.5, BPO1 and BPO2) were fed to experimental fish for 60 days. At the end of the experiment, the best growth performance was obtained in the BPO0.5 and BPO1 groups (p < .05). No significances were found for haematological parameters including red blood cell count, haematocrit and haemoglobin concentration at the end of the feeding experiment. There were significant differences between the total protein, cholesterol, alkaline phosphatase and glutamic oxaloacetic transaminase (p < .05) between the BPO0.5 and BPO1 supplemented groups and the control group with no BPO addition. The addition of BPO showed significant differences in immune parameters such as lysozyme activity, total myeloperoxidase content, superoxide dismutase and glutathione peroxidase activity between BPO0 and BPO supplemented groups (p < .05). It might be concluded that dietary addition of 0.5%-1% BPO could increase the growth performance and feed utilization with improved health status in sea bass juveniles.