Sürdürülebilir Kalkınma Amaçları

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Yazarlar

• Kayim, Murathan(3)
• Kizak, Volkan(3)
• Benzer, Fulya(2)
• Can, Erkan(2)
• Kocabas, Mehmet(2)
• Yüksel, Fahrettin(2)
• Ates, Mehmet(1)
• Aydin, Seyit(1)
• Camas, Anil Sazak(1)
• Camas, Mustafa(1)
• Celayir, Yasin(1)
• Celik, Fatih(1)
• Demirol, Ferhat(1)
• Erisir, Mine(1)
• Eroglu, Mucahit(1)
• Gündüz, Fatih(1)
• Güner, Yusuf(1)
• Kurtoglu, Ilker Zeki(1)
• Kutlu, Banu(1)
• Mutlu, Ekrem(1)
• Ozalp, Hasan Baris(1)
• Sen, Dursun(1)
• Türel, Murat(1)
• Türkgülü, Ibrahim(1)
• Yildirim, Nuran Cikcikoglu(1)
• Yildiz, Nurettin(1)
• Yüce, Songul(1)
• Çakirogullari, Gul Celik(1)
• Çelik, Huseyin Tugrul(1)
• Çoban, Mehmet Zulfu(1)
• Özçelik, Mehtap(1)

• MakaleAçık Erişim2016Scopus SJRQ3/r/munzur/4374
  Uranium (VI) Biosorption on Marine Sponge, Sarcotragus foetidus (Schmidt, 1862) and Its Statistical Investigation Using Central Composite Design

  Celik, Fatih; Camas, Mustafa; Camas, Anil Sazak; Ozalp, Hasan Baris

  The biosorption of heavy metals, radionuclides, uranium and thorium for the recovery or removal from aqueous systems using various micro-organisms and biological substances has been investigated by several groups of workers. In this paper, the uptake of uranium (VI) from aqueous systems by a marine sponge, Sarcotragus foetidus (Schmidt, 1862) has been investigated. S. foetidus samples were collected from Babakale/Ayvacik/Canakkale in Turkey. Uranium (VI) uptake experiments were carried out by the batch technique. The affecting parameters were analyzed using Central Composite Design (CCD) as the experimental method. Four independent variables such-pH, temperature, contact time, and initial uranium concentration were selected for this study. The influences of initial pH, contact time, and initial uranium concentration on the biosorption process were considered statistically significant as main effects. On the other hand, interaction effects of pH and contact time, as well as pH and initial uranium concentration, were considered as significant parameters on the biosorption process. The optimum condition of biosorption process was found to be at initial pH: 4, temperature: 35 degrees C, initial uranium concentration: 20 mg/L, and contact time: 31 minutes. At these conditions, the biosorption yield of uranium (VI) ions was obtained to be 93.29 +/- 2%.

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  AtıfWoS2·OpenAlex1

  İncele
• MakaleAçık Erişim2016Scopus SJRQ3/r/munzur/4315
  The Effects of Dietary Antioxidants on the Arginase Activity and Nitric Oxide Level of Narrow-Clawed Turkish Crayfish (Astacus leptodactylus, Esch 1823) in Moulting Period

  Benzer, Fulya; Özçelik, Mehtap; Yildirim, Nuran Cikcikoglu

  The effects of dietary antioxidants (vitamine E, vitamine C, Astaxhantin, beta carotene) on arginase activity and nitric oxide levels of hepatopancreas and muscle of freshwater crayfish (Actacus leptodactylus) were investigated during moulting. 150 mg kg(-1) vitamine E (VE), 200 mg kg(-1) vitamine C (VC), 200 mg kg(-1) Astaxhantin and 200 mg kg(-1) beta carotene were added to experimental diets. A. leptodactylus with these diets were fed with 2% of their total weight daily, in a day during 75 days. Arginase activity was increased in muscle of crayfish fed the diets VC, VE, astaxanthin and beta karoten but in hepatopancreas arginase activity was increased with beta carotene when compared to control. NO levels in muscle were decreased when compared to control but this decrease was not statically significant. NO levels in hepatopancreas of crayfish fed the diets VC and astaxanthin were higher than control groups. Our results demonstrated that dietary antioxidants affect the arginase activity and nitric oxide level of freshwater crayfish (Astacus leptodactylus, Esch. 1823) during moulting.

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  AtıfWoS3·OpenAlex3

  İncele
• MakaleAçık Erişim2015Scopus SJRQ3/r/munzur/4881
  Alterations of Growth Performance and Blood Chemistry in Nile Tilapia (Oreochromis Nuoticus) Affected by Copper Sulfate in Long-Term Exposure

  Mutlu, Ekrem; Aydin, Seyit; Kutlu, Banu

  The objective of this study was to evaluate the effects of copper sulfate (CuSO4(5 H2O)) on the Nile tilapia (Oreochromis niloticus). Median (LC50) and minimum (LC1O) lethal concentrations of copper sulfate on Nile tilapia were determined via acute tests. LC50 values of copper sulfate for the 48th, 72nd and 96th hours were 13.15, 12.95 and 12.85 mg/L, respectively. LC10 values of 12, 11 and 9.5 mg/L were obtained for similar exposure periods (48th, 72nd and 96th hours), respectively. The effects of 1.5 mg/L dose of copper sulfate on growth rate, gross clinical observations and blood biochemical parameters of Nile tilapia were evaluated after 35, 65 and 95 days of exposure periods. The differences of growth rates between control and copper sulfate-exposed groups were not significant (P>0.05) at the end of 35, 65 and 95 days. Continuous exposure of Nile tilapia to 1.5 mg/L concentration of copper sulfate in water solution for three periods (35, 65 and 95 days) decreased the total protein, albumin, aspartate aminotransferase (AST), alanine aminotransferase (ALT), glucose (except the elevation in the exposed group at the end of 95 days period), magnesium (Mg+2), calcium (Ca+2), iron (Fe+2), potassium (K+), sodium (Na+1), chloride (Cl-) and phosphate values in serum. The cholesterol, low density lipid (LDL), triglyceride, globulin, creatinine, alkaline phosphatase (ALP), total bilirubin, direct bilirubin, uric acid and blood urea nitrogen (BUN) concentrations in the serum increased in copper sulfate-exposed fish.

  AtıfWoS23·OpenAlex14

  İncele
• MakaleAçık Erişim2013Scopus SJRQ3/r/munzur/4867
  Leslie Population Estimation for Turkish Crayfish (Astacus leptodactylus Esch., 1823) in the Keban Dam Lake, Turkey

  Yüksel, Fahrettin; Demirol, Ferhat; Gündüz, Fatih

  The population size was researched by using Leslie method on the zones of Keban Dam Lake where crayfish is fished for commercial purposes. The data were compiled by using effort expended and catch obtained by 28 fishing boats during 2012 crayfish fishing season. 28 fishing boats fished 16,867 kilograms of crayfish during the fishing season by using 45,600 pieces of crayfish fyke nets. It is determined that the quantity catch per unit effort (CPUE) varies between 2.74 to 6.35 kg/100 fyke nets/week during the 9 weeks fishing period. The population size at the beginning was estimated to be 28,450 kg (at minimum legal length of >= 10 cm). The 95% confidence interval of this estimation was calculated to be 25,607-32,533 kg. Similar researches on crayfish populations concluded that removal method can offer very important details.

  AtıfWoS11·OpenAlex13

  İncele
• MakaleYalnız künye2013Scopus SJRQ3/r/munzur/4300
  Comparison of Growth Performance, Gonadal Structure and Erythrocyte Size in Triploid and Diploid Brown Trout (Salmo trutta fario L, 1758)

  Kizak, Volkan; Güner, Yusuf; Türel, Murat; Kayim, Murathan

  The aim of this study was to compare growth, gonadal structure and red blood cell sizes of triploid and diploid brown trout (Salmo trutta fario). Triploidy was induced by providing a heat shock treatment to the fertilized eggs. From the 18th month post-fertilization triploid (TBT) and control diploid (CBT) brown trout groups were investigated up to 32nd month. Survival, specific growth rate, feed conversion ratio, condition factor, relative growth rate, absolute growth rate, gonadosomatic index, hepatosomatic index and carcass yield were determined in both groups. It has been determined that the triploid fish showed greater live weight than diploid fish despite the difference was not significant (P>0.05). In triploid group triploidisation success was obtained as 95% and male/female ratio was found as 44.4-55.6%. The red blood cells were significantly larger in triploids than diploid ones (P<0.05). Regarding histological section of gonads, triploidy resulted in reduced gonadal development in female, while triploid males seem to exhibit normal gonadal development. Our results suggest that since triploid females could grow more than males, the growth performance studies on triploid brown trout should be performed with all-female stocks under fish farming practices especially for the production of large size trout.

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  AtıfWoS24·OpenAlex22

  İncele
• MakaleYalnız künye2013Scopus SJRQ3/r/munzur/4244
  Seasonal Variations of Proximate and Total Fatty Acid Composition of Wild Brown Trout in Munzur River, Tunceli-Turkey

  Ates, Mehmet; Çakirogullari, Gul Celik; Kocabas, Mehmet; Kayim, Murathan; Can, Erkan; Kizak, Volkan

  Seasonal variations of proximate composition and fatty acid profiles of wild brown trout (Salmo trutta macrostigma Dumeril, 1858) caught from the Munzur River, Tunceli-Turkey were investigated in this study. It was determined that wild brown trout was high in mono-unsaturated, poly-unsaturated and saturated fatty acids, respectively. C18:1 omega-9 (oleic acid) was the most abundant fatty acid in all seasons ranging from 20.27 to 29.35 %. C22:6 omega-3 (docosahexaenoic acid-DHA), C18:3 omega-3c (cis-linolenic acid), C18:2 omega-6c (linoleic acid), and C20:5 omega-3 (eicosapentaenoic acid-EPA) were found to be predominant fatty acids in PUFAs. As a conclusion, wild brown trout living in Munzur river could be considered as an important protein and omega-3 fatty acid source according to the nutritional quality results evaluated in terms of proximate and fatty acid composition.

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  AtıfWoS13·OpenAlex11

  İncele
• MakaleAçık Erişim2012Scopus SJRQ3/r/munzur/4242
  The Effects of Different Dosage of Kefir with Different Durations on Growth Performances and Antioxidant System in the Blood and Liver Tissues of Coruh Trout (Salmo coruhensis)

  Can, Erkan; Kurtoglu, Ilker Zeki; Benzer, Fulya; Erisir, Mine; Kocabas, Mehmet; Kizak, Volkan; Kayim, Murathan; Çelik, Huseyin Tugrul

  The objective of the present work is to examine the effects of different doses (0, 10, 20 and 40 g kg(-1) fish diet mass) of kefir on growth performance and oxidant-antioxidant status in the blood and liver tissues of Coruh trout, Salmo coruhensis, in different periods (2 and 3 months). In this study, survival was more than 88.3%, and irrespective of dietary kefir levels at the end of the study. There were no significant differences in SGR (Specific growth rate), FCR (Feed conservation rate), CF (Condition factor) among fish fed diets with 0, 10, 20 and 40 g kg(-1) kefir, however, these growth values were significantly different in terms of durations between 2-month and 3-month treatment (P<0.05). Our results indicated that TAS (Total Antioxidant Status) and TOS (Total Oxidant Status) in blood tissues reduced with kefir treatment at the end of third month (P<0.05). Malondialdehyde (MDA) levels in liver decreased in all groups compared with control group and a considerable extent decrease was observed in 40 g dose of kefir treatment at the end of third month. The data obtained from this experiment indicated that the same dose of kefir was more effective at the end of 3-month treatment than 2-month treatment (P<0.001). Although there was no statistical difference among groups, an increase in the glutathione peroxidase (GSH-Px) enzyme activity was observed in all groups compared to control groups. While catalase (CAT) activity decreased in all groups compared to control group at the end of second month (P<0.01), the decrease was insignificant level at the end of third month. In glutathione (GSH) levels, statistical differences were no observed in all groups compared to the control group with 2-month treatment while there were significant increases with 3-month treatment (P<0.001). It was concluded that kefir could play an antioxidant role and its effectiveness depended on dosage and time of application in Coruh trout, S. coruhensis.

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  AtıfWoS15·OpenAlex15

  İncele
• MakaleAçık Erişim2012Scopus SJRQ3/r/munzur/4224
  Some Biological Characteristics of Luciobarbus esocinus Heckel, 1843 Living in Keban Reservoir

  Çoban, Mehmet Zulfu; Türkgülü, Ibrahim; Yüksel, Fahrettin; Celayir, Yasin; Yüce, Songul; Eroglu, Mucahit; Yildiz, Nurettin; Sen, Dursun

  This study was carried out in Luciobarbus esocinus obtained from Keban Reservoir (Elazig) between March 2008 and October 2009. During the research, it was determined that the percentage of male, female and undefined individuals from 187 L. esocinus were 45.46%, 37.43% and 17.11% respectively. The ages of population were distributed between I and XVII. The lengths of the individuals ranged from 23.0 to 112.4 cm and the weight of them ranged from 118 to 18,042 g. The length and weight equation for population was determined as W-all individuals = 0.0057*TL3.2187 (n= 187, r= 0.98). The highest GSI values of both sexed were obtained in March and these values were decreased rapidly after this month. It was determined that the condition factor increased until age 5 and then, it decreased respectively.

  AtıfWoS5·OpenAlex5

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