%0 Journal Article
%T Mortalities and Exploitation Rate of Mediterranean Horse Mackerel, Trachurus mediterraneus (Steindachner, 1868) in the Central Black Sea
%A Tevfik CEYHAN
%J -
%D 2018
%X This study provides some actual information about length, weight, age, and mortality rates of Mediterranean horse mackerel ( Trachurus mediterraneus) population in the central Black Sea in order to detect whether fishing pressure or not. A total of 1467 specimens were monthly collected from commercial purse-seiners, which especially landed to Sinop fishing port between September 2016 and March 2017. A total of 109 otoliths were used for age reading. Total length and weight of T. mediterraneus specimens were ranged from 7.1 cm to 20.3 cm (average: 14.02¡À0.04 cm) and 3.2 g to 67.7 g (average: 23.8¡À0.19 g). The samples were grouped densely between 12 and 15 cm and about 84% of samples in this study were within the legal size. Length-weight relationship was calculated as W = 0.0067 ¡Á TL 3.0848 (r 2 = 0.94). Age groups of horse mackerel in the central Black Sea were between I and III. Mean lengths according to age groups were 9.9¡À0.36 cm, 14.1¡À0.11 cm and 16.7¡À0.13 cm, respectively. Also, von Bertalanffy Growth Parameters were L ¡Þ = 19.14¡À0.46 cm, K = 0.65 ¡À0.03, t 0 = -0.08¡À0.007 year. Mortalities (M, F and Z) and exploitation rate (E) of T. mediterraneus from the Central Black Sea were 0.84 year -1, 0.87 year -1, 1.712 year -1 and 0.51 year -1, respectively. The rates of exploitation and minimum landing size indicate that there is no overfishing on T. mediterraneus population in the area for the time being
%K £¿stavrit
%K Trachurus mediterraneus
%K boy
%K a£¿£¿rl£¿k
%K s£¿m¨¹r¨¹lme
%K Karadeniz
%U http://dergipark.org.tr/trjmms/issue/40277/485537