CÜNEYT SUZER, DENİZ ÇOBAN, H. Okan KAMACI, Şahin SAKA, Kürşat FIRAT

Sinagrit (Dentex dentex (L., 1758) larva yetiştiriciliğinde kullanılan üretim teknikleri

Bu çalışmada, özellikle son yıllarda alternatif türler kapsamında değerlendirilen sinagrit (Dentex dentex) balığının larval döneminde (0–35 gün) 3 farklı üretim tekniğinin larval gelişime olan etkileri incelenmiştir. Çalışmada; akışkanlı su, air-lift ve kapalı devre üretim teknikleri kullanılmıştır. Akışkanlı su tekniğinde tanklardaki suyun 24 saat sürekli yenilenmesi sağlanmıştır. Air-lift yönteminde ortamdaki suyun her gün %10’u, kapalı devre yöntemde ise her saat %10’u yenilenmiştir. En iyi total boy 20.45±4.3 mm ve ağırlık 86.22±6.3 mg olarak air-lift üretim tekniğinin uygulandığı gruptan elde edilmiştir. Bu grubu 18.73±4.6 mm total boy ve 81.13±5.9 mg ağırlık değeri ile kapalı devre ve 16.96±5.2 mm total boy ve 71.34±7.4 mg ağırlık değeri ile akışkanlı su üretim tekniğinin uygulandığı gruplar izlemiştir. Total boy ve ağırlık gelişimi açısından, air-lift üretim sistemi ile kapalı devre üretim sistemi uygulanan gruplar arasındaki fark önemsiz bulunmuştur (p>0.05). Akışkanlı su üretim sistemi uygulanan grup ile diğer gruplar arasındaki fark ise önemlidir (p0.05). Bunun yanında, yaşama oranları ise akışkanlı su, air-lift ve kapalı devre üretim sistemleri için sırasıyla %10.6±2.1, %22.5±3.4 ve %20.6±3.8 olarak saptanmıştır. Yaşama oranları bakımından akışkanlı su üretim sistemi uygulanan grup ise diğerlerinden farklıdır (p

Anahtar Kelimeler:

balık çiftlikleri, kültür teknikleri, balık, sucul kültür, gelişme dönemleri, balık yetiştiriciliği

Culture techniques used in larviculture of common dentex (Dentex dentex (L., 1758)

In this study, the effects of three different culture techniques on larval development during larval period (0-35 day) in common dentex (Dentex dentex) which is accepted as a new candidate species in the recent years were investigated. Larval culture techniques which are circulated sea water, air-lift and closed systems were used. In circulated sea water system, sea water renewed during the day, and also renewed 10% per hour in closed system. Besides, in the air-lift system, sea water circulated inside of tank and 10% of volume renewed during the day. It is determined that the best total length development and weight was found as 20.45±4.3 mm and 86.22±6.3 mg in air-lift technique treated group. Also, these parameters were determined as 18.73±4.6 mm and 81.13±5.9 mg for closed system applied group and 16.96±5.2 mm and 71.34±7.4 mg for circulated sea water treated group. Although significant differences were found in circulated sea water treated group (p<0.05), there are no differences between air-lift and closed system treated groups (p>0.05) in total length development and weight. Also, swimbladder inflation rates were determined as 88%, 92 % and 89% for circulated sea water, air-lift and closed system treated groups respectively. Additionally, survival rates were calculated as 10.6±2.1%, 22.5±3.4% and 20.6±3.8% respectively. Similarly, differences between air-lift and closed system treated groups were not significant (p>0.05) whereas circulated sea water treated group was significantly different than the other groups (p<0.05).

Keywords:

fish farms, culture techniques, fishes, aquaculture, developmental stages, fish farming,

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