Emre, Yılmaz Mediterranean Fisheries Research, Production and Training Institute, Turkey , Emre, Yılmaz Akdeniz University - Faculty of Sciences - Department of Biology, Turkey , Ayyıldız, Hakan Canakkale Onsekiz Mart University - Gokceada School of Applied Sciences - Department of Fisheries Technology, Turkey , Özen, Özcan Canakkale Onsekiz Mart University - Faculty of Marine Sciences and Technology, Turkey , Yağcı, Abdulkadir Fisheries Research Station, Turkey

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

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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; L∞ = 42.25 cm (L), K = 0.102 (year-1), t0 = -2.84 (year) for all specimens. The otolith morphometric measurements (OL, OW and OR) showed significant linear relationships with the total length. No significant differences were found between observed age and predicted ages of the C. angorae estimated from the OL, OW and OR (Mann-Whitney U test; P 0.05).

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Age , growth , asteriscus , otolith morphometry , Capoeta angorae

Ege Journal Of Fisheries an‎d Aquatic Sciences

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