Türkiye'deki Levrek (Dicentrarchus labrax L., 1758) Larva Üretim (original) (raw)

Broodstock management technics of sea bass (Dicentrarchus labrax L., 1758) larvae hatcheries in Turkey. Broodstock management, egg quality and egg assurance techniques were examined in sea bass (D. labrax) hatcheries in Turkey. The study was carried out by full counting method and 13 hatcheries were active on production in determined 15 hatcheries in 2001. Generally 2-6 years old breeders used and fed high quality pelleted and fresh food in reproduction period only, and natural spawning, photoperiodic manipulation of spawning time and hormonal interference (LHRH, especially) used in egg assurance were determined in all hatcheries. However, average fecundity rate between 150.000 and 300.000 eggs per kilogram, fertilization hatching rate between 80 and 100%, incubation temperature between 14 and 16°C were determined and, intensive egg death observed from fertilization to gastrulation stages.