Identification of Turbot (Scophthalmus maximus) Stock Along The Turkish Black Sea Coast

• Main Author: AVŞAR, Dursun
• Format: Article in Journal/Newspaper
• Language: Turkish
• Published: TÜBİTAK 1998
• Subjects: Eastern Black Sea coast of Türkiye,Turbot (Scophthalmus maximus),Population Parameters,Stock Asessment Studies; Scophthalmus maximus; Turbot
• Online Access: https://dergipark.org.tr/tr/pub/tbtkzoology/issue/12674/154014

This study was performed in order to assessment of the turbot (Scophthalmus maximus) Stock from Southeastern Black Sea during April-September 1990 and September-October 1991. From the length-age data for both sexes, the following population parameters were estimated: Length-Weight relationship, W=0.0085*L3.18; v. Bertalanffy growth constants, L?(mm) = 825.7, K(year-1)=0.17, to (year)=-0.93, W?(g) = 10590.43; total mortality and its components, Z=0.48, M=0.30 and F=0.18. Standing biomass of the turbot between 0 and 100 m depth range in September-October 1991 was found to be 407.6 tonnes and also there was an under exploitation rate on this stock as a rate of E=0.37. This study was performed in order to assessment of the turbot (Scophthalmus maximus) Stock from Southeastern Black Sea during April-September 1990 and September-October 1991. From the length-age data for both sexes, the following population parameters were estimated: Length-Weight relationship, W=0.0085*L3.18; v. Bertalanffy growth constants, L?(mm) = 825.7, K(year-1)=0.17, to (year)=-0.93, W?(g) = 10590.43; total mortality and its components, Z=0.48, M=0.30 and F=0.18. Standing biomass of the turbot between 0 and 100 m depth range in September-October 1991 was found to be 407.6 tonnes and also there was an under exploitation rate on this stock as a rate of E=0.37.