Turkish Journal of Fisheries and Aquatic Sciences
2003, Vol 3, Num, 1 (Pages: 25-28)
Effect of Different Rearing Systems on Survival Rate of Hatchery Reared Black Sea Turbot, Scophthalmus maximus
Temel Şahin 1 ,Cennet Üstündağ 1
1 Central Fisheries Research Institute, Trabzon, Turkey
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Rearing experiments were carried out to examine the effect of different rearing systems on survival of hatchery reared
Black Sea turbot, Scophthalmus maximus. The larvae were reared under natural light regime from hatching until 20 days old.
Three groups were set as follows: Group I: continuously exchanged sea water (open-system), group II: stagnant seawater
treated with 10 ppm EDTA, group III: stagnant seawater. The feeding regime consisted of Nannochloropsis, Brachionus and
Artemia. From initial total length of 3.44±0.07 mm on day 0, larvae grew to 8.30±0.39 (group I), 8.45±0.56 (group II) and
8.51±0.50 mm (group III) on day 20. Survival rates were 21.1, 15.3 and 9.1% in group I, II, III, respectively.
Keywords :
Turbot, Scophthalmus maximus, growth, survival rate, larval rearing