Yüce, Songül; Şen, Dursun; Çoban, M. Zülfü; Alpaslan, Kenan; Çelik, Burcu; Aydin, Rahmi; Demirol, Ferhat; Gündüz, Fatih

This study was conducted at Atatürk Dam Lake between April 2011-March 2012. In this study, a total of 231 (106 female, 125 male) Cyprinus carpio L., 1758 samples were analyzed. It was determined that samples were ranged between I-X age groups and male/female ratio was determined as 1.18:1 Total length values were ranged between 13.5-59.2 cm for males, 14.6-59.3 cm for females; weight values were ranged between 53.2-4662.5 g for males, 56.4-4668.0 g for females; condition factor values were ranged between 1.182-4.175 for males and 1.251-3.514 for females. Length-weight relationship for males W=0.0346*TL2.807(R2=0.95), female W=0.0246*TL2.8922 (R2=0.96) and in general population W=0.0295*TL2. 8472 (R2=0.95) were detected. VBBD (von Bertalanffy growth equation) for all population parameters L?=111.01, K=0.06, t=-1.48, W?=19746.57 and natural mortality (M) is determined as 0.1671. The highest average Gonadosomatic index values were determined in April for both sexes. Egg diameter values were measured between 0.60-1.33 mm, and the highest average value was found in April (1.27 mm). Reproduction period was determined between April-July. Fecundity values was calculated between 13468-885762. The first maturation was determined to be in age group III (30.848 cm in total length) for males and in age group IV (32.099 cm in total length) for females

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Yüce, Songül; Uslu, Ali Atilla; Şen, Dursun; Çoban, Mehmet Zülfü; Birici, Nevin; Küçükyılmaz, Mehmet; Aydin, Rahmi

In this study, the age, sex, length and weight distributions, growth, length-weight relationship and condition factor of chub from Keban Dam Lake have been determined. The total of 102 specimens were analyzed between April and November 2009. Sex composition of population was 59.80 % female and 40.20 % male. The von Bertalanffy growth equations were found as Lt= 45.96[1-e 0.2121(t+1.2636)] for females and Lt= 44.33[1-e 0.2420(t+1.0128)] for males. Length-weight 3.1419 3.1121 3.1484relationships were estimated as W=0.0087 L for females, W=0.0091 L for males and W=0.0084 L for all individuals. Condition factors of the population were calculated between 0.9325 and 1.8484

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Yüksel, Fahrettın; Türkgülü, İbrahim; Yüce, Songül; Celayir, Yasin; Şen, Dursun; Çoban, Mehmet Zülfü; Yildiz, Nurettin; Eroglu, Mücahıt

This study was carried out in Luciobarbus esocinus obtained from Keban Reservoir (Elazığ) 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 45.455%, 37.433% and 17.112% 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 18042 g. The length and weight equation for population was determined as Wall individuals = 0.0057TL3.2187 (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.

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