Sefa ACARLI, AYNUR LÖK, AYSUN KÜÇÜKDERMENCİ, Harun YILDIZ, SERPİL SERDAR

Comparative growth, survival and condition index of flat oyster, Ostrea edulis (Linnaeus 1758) in Mersin Bay, aegean sea, Turkey

Doğadan toplanan farklı boylardaki (15 mm, 20 mm, 25 mm, 30 mm, 35 mm ve 40 mm) yassı istiridyelerin, Ostrea edulis, askı kültür tekniği ile büyüme ve yaşama oranı Mersin Körfezi, İzmir, Türkiye de Nisan 2002 Ağustos 2003 tarihleri arasında çalışıldı. Örnekleme süresince aylık olarak sıcaklık, tuzluluk, klorofil-a, total partikül madde (TPM), pH gibi çevresel faktörler takip edildi. Sıcaklık değerleri 13.8ºC (Ekim 2002) ve 24.5ºC (Temmuz ve Ağustos 2002) arasında değişim gösterdi. Ortalama klorofil-a, TPM ve pH değerleri sırası ile 1.7±0.64 μg l-1, 0.01311±0.00224 mg l-1 ve 7.65±0.22’dır. Her boy grubu için kabuk boyu (küçükten büyüye doğru) artışı sırası ile 49.99, 43.39, 39.10, 33.11, 39.36 ve 25.67 mm olarak belirlendi. En küçük boy grubu diğer boy gruplarına göre daha hızlı büyüdüğü tespit edildi (P

Anahtar Kelimeler:

Ege Denizi, ağırlık artışı, yaşayabilme, kabuk, kabuklu su ürünleri, istridye kabuğu, et verimi, büyüme, çevresel faktörler, karşılaştırmalar, Türkiye, Ostrea edulis, Akdeniz

Yassı İstiridyenin, Ostrea edulis (Linnaeus 1758) Mersin Körfezi Ege Denizi Türkiye de büyüme yaşama ve kondisyon indeksinin karşılaştırılması

Growth and survival of fl at oyster, Ostrea edulis, juveniles of diff erent sizes (15 mm, 20 mm, 25 mm, 30 mm, 35 mm and 40 mm) from natural spatfall were studied in suspended culture in Mersin Bay Izmir, Turkey from April 2002 to August 2003. Environmental parameters such as temperature, salinity, chlorophyll-a, total particulate matter (TPM), pH were monitored each sampling time. Temperature was between 13.8ºC (December 2002) and 24.5ºC (July and August 2002). Average chlorophyll-a, TPM and pH were 1.7±0.64 μg l-1, 0.01311±0.00224 mg l-1 and 7.65±0.22, respectively. Shell length increment for each size groups (from small to large) was determined as 49.99, 43.39, 39.10, 33.11, 39.36 and 25.67 mm, respectively. The smallest group was growth faster than others (P<0.05). Significant diff erences in survival rates between size groups occurred (highest: 60% for 15.mm and lowest: 12.8% for 35 mm) (P<0.05). Condition index and meat yield which showed many variations throughout the study changed from 2.65% to 5.11% and from 6.65% to 12%, respectively.

Keywords:

Aegean Sea, weight gain, survival, shells, shellfish, oyster shells, meat yield, growth, environmental factors, comparisons, Turkey, Ostrea edulis, Mediterranean Sea,

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