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

Daban İ. B., Şen Y., Öztekin A., Ayaz A., Altınağaç U., İşmen A., ...More

TURKISH JOURNAL OF MARITIME AND MARINE SCIENCES, vol.10, no.1, pp.1-10, 2024 (Peer-Reviewed Journal)

  • Publication Type: Article / Article
  • Volume: 10 Issue: 1
  • Publication Date: 2024
  • Journal Indexes: Academic Search Premier
  • Page Numbers: pp.1-10
  • Çanakkale Onsekiz Mart University Affiliated: Yes


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.