Determination of Some Population Dynamic Parameters of Acanthobrama thisbeae Freyhof & ？zulu？, 2014 for Azapl？ Lake (G？lba？？, Ad？yaman)

The aim of this study was to determine population parameters of Acanthobrama thisbeae in Azapl？ Lake, Ceyhan River basin. A total of 576 specimens were analyzed that were collected in August 2014, September 2014, and May 2015. Age of the specimens ranged from I to V age groups. Dominant age group was found I (62.85% ) followed by III and II age groups. Total length varied from 8.6-21.5 cm with the mean of 12.55±2.98 cm and total weight ranged from 5.61 to 107.72 with the mean of 23.43±19.39 g. Length-weight relationship were estimated W=0.0053L3.2364. Estimated population parameters were calculated as L∞: 26.74 cm, k: 0.241. to: -1.13. Φ？: 2.24 and K: 0.91 for the population. Mortality and exploitation rates estimated as Z: 0.76, M: 0.55, F: 0.21 and E: 0.27, respectively. According to these values, it is expected that there are no over-fishing pressure on the population