Edremit Körfezi (Kuzey Ege Denizi, Türkiye)’nden avlanan Trachurus trachurus (L., 1758)’un bazı üreme özellikleri

Öz

Bu çalışmada, Kuzey Ege Denizi, Edremit Körfezi’nden Ekim 2008-Ekim 2009 tarihleri arasında, Trachurus trachurus (Linneaus, 1758) cinsiyet oranı, gonadosomatik indeksi, yumurtlama mevsimi, ilk eşeysel olgunluk boyu ve fekonditesi incelenmiştir. Toplam 829 adet T. trachurus bireyi aylık olarak örneklenmiştir. T. trachurus’un 1-4 yaş grupları arasındaki bireylerin %55.73’ünü dişiler, %44.23’ünü erkek bireyler oluşturmuştur.  Trachurus trachurus (L., 1758)’un üreme döneminin Nisan- Ağustos ayları arasında olduğu belirlenmiştir. İlk üreme boyu dişi bireyler için 13 cm olarak saptanmıştır. Türün mutlak yumurta verimliliği-toplam boy, mutlak yumurta verimliliği-toplam ağırlık sırasıyla F = 1.672xTL^3.311, F = 491.91TW+1306.6 olarak tespit edilmiştir. Bu çalışma Trachurus trachurus’un Türkiye sularında bazı üreme özelliklerine ilişkin ilk verileri içermektedir.  

Anahtar Kelimeler

• Trachurus trachurus
• üreme özellikleri
• Edremit Körfezi

Some reproductive characteristics of Trachurus trachurus, (Linneaus, 1758) from Edremit Bay (Northern Aegean Sea, Turkey)

Öz

In this study sex ratio, gonadosomatic index, spawning season, length at first sexual maturity and fecundity was investigated of Trachurus trachurus (Linneaus, 1758) which caught in the Northern Aegean Sea between October 2008 and October 2009. A total of 829 specimens of T. trachurus was sampled monthly. The percentage of female was 55.73%, male 44.23 % of T. trachurus which ranged between ages 1-4. The spawning period of Trachurus trachurus (Linneaus, 1758), occurred between April and August.  First sexual maturity length was 13 cm for female. Absolute fecundity- total length and absolute fecundity- total weight relationships were estimated as F = 1.672xTL^3.311, F = 491.91TW+1306.6, respectively.  This study includes first data on some reproductive characteristics of Trachurus trachurus (Linneaus, 1758) for Turkish waters.  

Anahtar Kelimeler

• Trachurus trachurus
• reproductive characteristics
• Edremit Bay

Kaynakça

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