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Estimation of spawning stock biomass and spawning areas of sardine, (Sardina pilchardus) with winter time ichthyoplankton sampling in the Sea of Marmara, Türkiye

Cilt: 41 Sayı: 1 15 Mart 2024
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Estimation of spawning stock biomass and spawning areas of sardine, (Sardina pilchardus) with winter time ichthyoplankton sampling in the Sea of Marmara, Türkiye

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.

Keywords

Destekleyen Kurum

The Scientific and Technological Research Council of Turkey

Proje Numarası

121G097

Etik Beyan

No specific ethical approval was necessary for this study.

Teşekkür

The authors thanks to Captain Osman Odabaşı and Able Seaman Umut Tunçer for their helps in the field works.

Kaynakça

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Ayrıntılar

Kaynak Göster

APA
Daban, İ. B., Şen, Y., Öztekin, A., Ayaz, A., Altınağaç, U., İşmen, A., Yüksek, A., Özekinci, U., Çakır, F., Demirkıran, T., Uğur, G. E., Ayaz, O., & Selçuk, B. B. (2024). Estimation of spawning stock biomass and spawning areas of sardine, (Sardina pilchardus) with winter time ichthyoplankton sampling in the Sea of Marmara, Türkiye. Ege Journal of Fisheries and Aquatic Sciences, 41(1), 54-62. https://doi.org/10.12714/egejfas.41.1.08