Growth Study of Flat Oyster (Ostrea edulis L. 1758) on the Coasts of Izmir (Özbek-Urla)

Öz

European oyster (Ostrea edulis L. 1758) in Uzbek-Urla (Izmir) in this study examined individuals placed in Augmentation systems to determine the growth and survival rates of their spats. Temperature, salinity, total particulate matter (TPM) (particulate organic-POM and particulate inorganic-PIM) and chlorophyll-a values were recorded from water parameters throughout the year. The highest in total particulate matter was found at 34.62 mg/l in June. In June, the ratio of inorganic matter in particulate matter was 77.61% and the ratio of organic matter was 22.39%. Mean length of Oyster larvae taken into Augmentation Systems reached from 26.39±4.00 mm at the beginning of the study to 60.84 ±10.71 mm at the end of the study. A significant negative correlation was found between survival rate with temperature and PIM (r2 = -0.654, r2 = -0.644, respectively) (p <0.05).The survival rate of oysters was found to be 61.9%. The results of the survival and growth rate obtained indicate that this region may be suitable for the cultivation of Ostrea edulis.

Anahtar Kelimeler

• flat oyster
• Ostrea edulis
• spat
• survival rate
• particulate inorganic matter

İzmir (Özbek-Urla) Kıyılarında Yassı İstiridye (Ostrea edulis L. 1758) Büyütme Çalışması

Öz

Bu çalışmada Özbek-Urla (İzmir)’de dağılım gösteren Avrupa istiridyesinin (Ostrea edulis L. 1758) büyüme ve yaşama oranlarını belirlemek amacıyla büyütme sistemlerine yerleştirilmiş spatlar incelenmiştir. Yıl boyunca su parametrelerinden sıcaklık, tuzluluk, toplam partikül madde (TPM) (partikül organik-POM ve partikül inorganik-PIM) ve klorofil-a değerleri kaydedilmiştir. Toplam partikül madde en yüksek haziran ayında 34,62 mg/l bulunmuştur. Haziran ayında partikül madde içerisindeki inorganik madde oranı %77,61, organik madde oranı ise %22,39 olarak tespit edilmiştir. Büyütme sistemlerine alınan istiridye yavruları boy ortalamaları çalışmanın başlangıcında 26,39±4,00 mm’den çalışmanın sonunda 60,84 ±10,71 mm’ye ulaşmıştır. İstiridyelerin yaşama oranı % 61,9 olarak bulunmuştur. Yaşama oranı ile Sıcaklık ve PİM arasında anlamlı negatif korelasyon (sırasıyla r2=-0,654, r2=-0,644) bulunmuştur (p<0,05). Elde edilen yaşama ve büyüme oranı sonuçları, bu bölgenin Ostrea edulis yetiştiriciliği için uygun olabileceğini göstermektedir. 

Anahtar Kelimeler

• Yassı istiridye
• Ostrea edulis
• spat
• yaşama oranı
• Partikül inorganik madde

Kaynakça

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