Karadeniz Bölgesi’nden Örneklenen Lüfer Balığının, Pomatomus saltatrix (Linnaeus, 1766) Otolit Şekil Analizi

Abstract

In this study, otolith shape indices and relationships between otolith shape and otolith length of the bluefish species Pomatomus saltatrix (Linnaeus, 1766), which was sampled from the Samsun offshore of the Blacksea Region were investigated. A total of 166 samples (94♀ and 72♂) were taken from commercial fishermen in two different fishing seasons. Sagittal otoliths of each sample were removed and six different shape index (form factor, roundness, circularity, rectengularity, ellipticity and aspect ratio) were used in analyses. The linear model is preferred for calculating the relationships between otolith shape properties and otolith length. Paired t-test, wilcoxon test, independent t test were used for statistical analysis. The minimum and maximum total lengths and weights of the captured samples are between 13.5-24.8 cm and 22.01-161.19 g, respectively. There is no difference between female and male in terms of total length and weight. When otolith dimensions of female and male were compared, there were no differences in terms of Otolith Length, Otolith Breadth, Otolith Perimeter and Otolith Area (P˃0.05). However, according to left and right otoliths comparisons, there were differences in terms of OB and OP (P˂0.05). Ellipticity was found to have a much stronger relationship with otolith length than the other five parameters (r2˃0.590).