Early-Life Population Parameters and Hatch-Date Analysis of Sharpsnout Seabream (Diplodus puntazzo Walbaum, 1792) Juveniles in the Sea of Marmara, Türkiye

Authors : Ismail Burak Daban, Yusuf Şen, Alkan Öztekin, Adnan Ayaz, Uğur Altınağaç, Ali Işmen, Ahsen Yüksek, Uğur Özekinci, Fikret Çakır, Tekin Demirkıran, Gençtan Erman Uğur, Oğuzhan Ayaz, Buminhan Burkay Selçuk

Pages : 27-38

Doi:10.52998/trjmms.1363389

View : 141 | Download : 153

Publication Date : 2024-03-18

Article Type : Research Paper

Abstract :This research aims to determine early-life population parameters and hatch date of sharpsnout seabream (Diplodus puntazzo Walbaum, 1792) juveniles using microstructure analyses of sagittal otoliths collected from the Sea of Marmara, Türkiye. Specimens were collected using an experimental beach seine at 12 stations from November 2021 to March 2022. The mean catch per unit effort (CPUE) was 1.1 individuals per haul, with 44.4% of the total D. puntazzo specimens collected at the Erdek Station. A negative allometric growth was calculated from the length-weight relationship equation (W=0.0178L2.698). The daily age ranged between 39 days-1 and 141 days-1, with a mean of 78.9 ± 2.29 days-1. The daily growth rate and mortality ratio were calculated as 0.213 mm/day and 4.38%, respectively. The hatching mainly occurred in September and October.
Keywords : Mikroyapı, Sagittal otolitler, Üreme sezonu, Popülasyon, Erken yaşam