Age, growth and otolith morphometry of Capoeta angorae (Cyprinidae) collected from Menzelet Reservoir and Fırnız Stream (Turkey) (original) (raw)

Age, growth rates and otolith morphometry of Capoeta angorae, collected by using electro shocker, were determined from the Fırnız Stream and Menzelet Reservoir between August 2011 and November 2012. A total of 175 otoliths were obtained from C. angorae that ranged between 7.5 and 27.0 cm L were used in the analysis. The overall male : female ratio (M : F = 1.52 : 1.00) was biased in favour of males. Student’s t-test revealed significant differences between sexes, regarding total length (P < 0.05). The length–weight relationships were calculated as W = 0.0128L2.8703 (R2= 0.975) for females, W = 0.0103L2.9462 (R2 = 0.969) for males and W = 0.0097L2.9629 (R2 = 0.978) for all specimens. Otolith length (OL), width (OW) and radius (OR) were ranged between 1.67 – 3.45 mm, 1.39 – 2.82 mm and 0.89 – 1.70 mm, respectively. The von Bertalanffy growth models were L∞ = 27.55 cm (L), K = 0.465 (year-1), t0 = -0.539 (year), females; L∞ = 22.84 cm (L), K = 0.772 (year-1), t0 = -0.71 (year) males...