Population Parameters of Whiting Merlangius merlangus (L., 1758) (Actinopterygii: Gadidae) in the South-Eastern Black Sea off Türkiye

In order to determine some population parameters of whiting in the Black Sea Region of Türkiye, a study was carried out between October 2018 and September 2019 on the coasts of Ordu–Samsun. Totally, 1202 whiting fish measured, which exhibited a length between 10.3 cm and 23.8 cm (av. 15.69±0.053 cm). Their weight ranged between 7.72 g and 104.69 g. The mean weight was 30.77±0.357 g. The length-weight relationship was W=0.0045L3.1868. The sex ratio (female/male) was 2.16:1. The maximum age was seven years for females and six years for males. The growth parameters were L∞=37.25 cm, K=0.089, t0=–3.955, W∞=86.99 g and Ø’=2.09. Monthly variations in the gonadosomatic index (GSI) showed that spawning of whiting continued from November to May. The reproduction, growth and condition trends are related with the changes in the species growth during the year.