@article{article_1374043, title={Estimation of spawning stock biomass and spawning areas of sardine, (Sardina pilchardus) with winter time ichthyoplankton sampling in the Sea of Marmara, Türkiye}, journal={Ege Journal of Fisheries and Aquatic Sciences}, volume={41}, pages={54–62}, year={2024}, DOI={10.12714/egejfas.41.1.08}, author={Daban, İsmail Burak and Şen, Yusuf and Öztekin, Alkan and Ayaz, Adnan and Altınağaç, Uğur and İşmen, Ali and Yüksek, Ahmet and Özekinci, Uğur and Çakır, Fikret and Demirkıran, Tekin and et al.}, keywords={Fish eggs, fish larvae, small pelagic fish, stock estimation, daily egg production}, abstract={The spawning areas and spawning stock biomass of sardine were studied with ichthyoplankton sampling in the winter period from the 32 stations, in the Marmara Sea. The mean fish egg and larvae biomass in a unit area were calculated as 18.4 ± 5.3 eggs/10 m2 and 2.5 larvae/10 m2, respectively. Three main spawning areas were detected as Karacabey Floodplain area, Gönen, and Büyükçekmece estuarine area. The larvae are mostly located in the western part. The batch fecundity of sardine was detected between 2415.9 and 16738.3, with a mean of 6899.8 ± 255.7 eggs. The sex ratio (R), spawning fraction (S), mortality rate, and daily egg production (Po) were calculated as 0.53, 0.098, 0.62, and 9.25 eggs/m2 in the Marmara Sea. The spawning stock biomass (B) is estimated at 2998 tonnes in the Marmara Sea. Both ichthyoplankton biomass and spawning stock biomass were found relatively lower. It is recommended to apply stricter management sanctions for the sustainability of sardine stocks.}, number={1}, publisher={Ege Üniversitesi}, organization={The Scientific and Technological Research Council of Turkey}