Okan ÖZAYDIN, Adnan İÇEMER, Hüseyin Avni BENLİ, Murat KAYA

Ege Denizi'nde dağılım gösteren Trigla lyra (Linneaus,1758) türünün biyolojisi

Bu çalışmada, 1991-1993 yıllan arasında Ege Denizi genelinde toplanan Trigla lyra (L.) bireylerinin yaş, büyüme ve üremesi çalışıldı. Bireylerin çatal boylan 62-542 mm arasında değişim gösterdi. Boy-ağırlık ilişkisinin eğimi her iki eşey grubu için allometrik büyüme gösterdi (dişi bireyler için b= 2.9396 ve erkek bireyler için b= 2.8877). En büyük birey DC yaş olarak saptandı, von Bertalanffy büyüme parametreleri her iki eşey için birlikte hesaplandı ( $L_infty$ = 596.97 mm, k= 0.16 $y^{-1}$, $t_o$ = -0.8632 yıl). Gonadosomatik indeks değerlerine göre bu türün Ege Denizi'ndeki üreme dönemini güz ve kış ayları oluşturmaktadır.

Biology of piper Trigla lyra (Linneaus,1758) distributing in Aegean Sea

In this study, age, growth and reproduction of Trigla lyra (L.) collected in Aegean Sea during 1991-1993 were studied. The fork length of individuals ranged from 62 to 542 mm. The slopes (b values) of the fork length-weight regressions indicated allometric growth for both sex groups (for females were b= 2.9396 and for males were b= 2.8877). The oldest individual was IX years. The von Bertalanffy growth parameters for sexes combined were L,~ 596.97 mm, k= 0.16 y ', to= -0.8632. According to the gonadosomatic index values, it was determined that reproduction period occurred during autumn and winter months.

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