MUSTAFA TOLGA TOLON, DİLEK EMİROĞLU, DENİZ GÜNAY, HÜLYA SAYĞI

Effect of Sediment Grain Size on Growth Performance of Juvenile Sea Cucumber (Holothuria tubulosa)

Dünya denizlerinde değerli deniz hıyarı stoklarındaki kritik azalmalar nedeniyle gittikçe önem kazanan deniz hıyarı yetiştiriciliğinde kullanılan sediment tane boyutunun, beslenme ve büyüme performansı üzerindeki etkilerinin bilinmesi önemlidir. Bu çalışmanın amacı tane boyutunun deniz hıyarı (Holothuria tubulosa) juvenillerinin büyüme performansı üzerindeki etkilerinin incelenmesi olarak belirlenmiştir. Bu çalışmada, denizhıyarı (H. tubulosa) genç bireylerinin 3 farklı sediment üzerinde büyüme performansları laboratuvar koşullarında 61 gün süreyle incelenmiştir. Ortalama 35,02±0,52 g ağırlıkta deniz hıyarı genç bireyleri 200x50x50 cm ölçülerindeki cam akvaryumlara 350 g m-2 stok yoğunluğunda yerleştirilmiştir. Farklı boyutlarda (1 mm, 3 mm, 7 mm ve 0,2 mm (kontrol)) doğal kırma kuvartz sediment tüm akvaryumlara 10 cm yüksekliğinde serilmiştir. Grupların son ortalama ağırlıkları 1 mm, 3 mm 7 mm ve kontrol grupları için sırasıyla 49,18±0,94 g, 44,23±0,35 g, 40,72±0,53 g ve 39,57±0,50 g olarak kaydedilmiştir. Spesifik büyüme oranı sediment gruplarına göre 0,20 % gün-1 (kontrol) ila 0,53% gün-1 (1 mm) arasında değişmiş. Tüm değerlendirmelerde 1 mm sediment grubundaki büyüme performansı en iyi düzeyde bulunmuştur

Sediment Tane Boyutunun Deniz Hıyarı (Holothuria tubulosa) Genç Bireylerinin Büyüme Performansı Üzerine Etkiler

It is important to know the impact of sediment type on feeding and growth performance of sea cucumbers in aquaculture which is getting more importance due to the critical decrease in valuable stocks in all seas. The purpose of the present study is to investigate the effect of grain size on growth performance of juvenile sea cucumber (Holothuria tubulosa) under aquaculture conditions. In the present study, the growth performance of juvenile sea cucumber (H. tubulosa) on 3 different grain sized sediment has been investigated in laboratory conditions for 61 days. Sea cucumber juveniles (35.02±0.52 g) were placed into the 200x50x50 cm aquaria by 350 g m-2. Natural crushed quartz sediment in different grain sizes (1 mm, 3 mm, 7mm and 0.2 mm (control)) were placed inaquariaby 10cm height. Final mean weight of the juveniles in sediment groups1 mm, 3 mm, 7 mm and 0.2 mm (control) were recorded as 49.18±0.94 g, 44.23±0.35 g, 40.72±0.53 gand 39.57±0.50 g, respectively. Specific growth rate of juveniles among sediment groups were ranged between 0.20% day-1 (Control) and 0.53 % day-1 (1mm). Overall, best growth performance was found as significant in 1 mm sediment group

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