Okan ÖZAYDIN, Sencer AKALIN, Dilek UÇKUN, Melahat TOĞULGA

İzmir Körfezi'inde Sardalya (Sardina pilchardus Walbaum, 1792) Larvalarının Günlük Büyümesi üzerine bir ön çalışma

Bu çalışmada, 2003 yılı Ocak ayında, İzmir Körfezi Urla kıyılarından, 0.5-1m derinlikte gerçekleştirilen tül ığrıp çekimi sonucunda toplanmış 66 adet Sardalya (Sardina pilchardus Walbaum, 1792) larvası incelenmiştir. Yakalanan larvaların boyları 23.25 ile 32.72 mm ve ağırlıkları ise 0.0041 ile 0.09 g arasında değişim göstermiştir. Örneklenen larvaların otolitlerindeki günlük halka sayısının 35 ile 60 arasında olduğu saptanmıştır. Otolit boyları 158.11 - 423.35 μm ve yarıçapları 87.65 - 244.55 μm arasında ölçülmüş ve otolit boyu ile günlük halka sayısı arasında iyi bir ilişki (r= 0.89) saptanmıştır.

A preliminary study on the dily growth of european sardine (Sardina pilchardus Walbaum, 1792) in İzmir Bay.

A preliminary study on the daily growth of european sardine (Sardina pilchardus Walbaum, 1792) in Izmir Bay. In this study, a total of 66 european sardine (Sardina pilchardus Walbaum, 1792) larvae, sampled between 0.5 - 1 meters by hand net from the coasts of Urla in Izmir Bay in January 2003, were investigated. Length and weight of fishes were distributed between 23.25 and 32.72 mm, 0.0041and 0.09 g respectively. Daily growth rings in their otoliths were counted 35 to 60. The diameters and radius of the otoliths were measured as 158.11 - 423.35 μm and 87.65 - 244.55 μm respectively. It was found a good relationship between otolith diameters and daily growth rings (r=0.89) of the larvae.

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