Studies on the indoor circulating culture of Pseudosciaena crocea at low salinity

Abstract:

Experiments were conducted to determine the feeding, growth and survival rate of eight month juvenile Pseudosciaena croceaduring low salinity domestication in an indoor circulating culture system. The juveniles were domesticated at salinity 10 ppt environment for 30 days and transported to the aquarium facilities at Shanghai Ocean University. After 8 hours transportation, the juveniles were cultured in indoor half closed circulating system at the salinity of 10. After 5 days environmental adaptation and 80 days of feeding period, the length of P.crocea increased from 5.31 cm to 8.36 cm, and the rate of growth was 0.04 cm per day. The weight increased from 2.59 g to 8.50 g, adding 0.07 g per day. The survival rate was 70.5％. Perhaps the commercial feed and the low grazing rate more or less lead to low growth rate of juveniles. Therefore, the result is expected to lay the foundation for the indoor desalination culture of P.crocea in the coastal reclamation and estuary district with low salinity waters.