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Age and Growth Parameters of the Antalya Bleak Alburnus baliki Bogutskaya, Kucuk & Unlu, 2000 (Actinopterygii: Cyprinidae) in the Manavgat River Estuary, Turkey

2019    Innal, Deniz; Gulle, Iskender

The present study reports the age and growth parameters of the Antalya bleak Alburnus baliki from the estuary of the Manavgat River, Antalya, Turkey. We collected 234 specimens of A. baliki, which ranged between 1.7 and 15.9 cm in total length and between 0.028 and 44 g in total weight. Of these, 41 were immature, 80 were female and 113 were male. The scales indicated the presence of five age classes (0-IV). Length-weight relationships were fitted using the equation W=0.0033L(3.4456) (R-2=0.99) for females and W=0.0033L(3.4538) (R-2=0.99) for males and W=0.0046L(3.2895) (R-2=0.99) for both sexes combined, thus indicating a positive allometric growth. The mean value of the condition factor was calculated as 0.77 and ranged from 0.52 to 1.20. This study provided the first baseline data related to length-weight relationship, age, sex ratio and condition factor for A. baliki. Its populations are threatened due to various ecological changes in its habitats, leading to increased concern and the need for conservation.