Author/Authors :
Alver, Cenk Çanakkale Onsekiz Mart Üniversitesi, Tezioğlu Yerleşkesi - Fen Bilimleri Enstitüsü - Su Ürünleri Anabilim dalı, Turkey , Ayyıldız, Hakan Çanakkale Onsekiz Mart Üniversitesi - Gökçeada Uygulamalı Bilimler Yüksek Okulu - Balıkçılık Teknolojisi Bölümü, Turkey , Altın, Aytaç Çanakkale Onsekiz Mart Üniversitesi - Gökçeada Uygulamalı Bilimler Yüksek Okulu - Balıkçılık Teknolojisi Bölümü, Turkey
Title Of Article :
Age and growth rates of swordfish (Xiphias gladius), caught from Gökçeada Island by harpoon fishing
Abstract :
In this study, age and growth rates of swordfish Xiphias gladius, caught from north Aegean Sea with landings in Gökçeada Island by harpoon fishing, were determined between 24 March and 15 June 2015. A total of 300 swordfish specimens that ranged between 74 and 174 cm Lower jaw fork length (LJFL) were used in the analysis. The length–weight relationships were calculated as W = 5E-06L^3.188 (R^2 = 0.948). A total of 83 anal fin rays were used in the analyses. The age-classes ranged from 0 to 5 years, while the samples were dominated by the 2 years old. The von Bertalanffy growth curves were fitted to the length at age data and the estimated parameters of the equation were: L∞ = 218.3; k = 0.193 and t0 = -2.1031.
NaturalLanguageKeyword :
Swordfish , Xiphias gladius , harpoon , North Aegean Sea , Gökçeada
JournalTitle :
Ege Journal Of Fisheries and Aquatic Sciences
