Energy emtabolism of juvenile Japanese flounder,Paralichthys olivaceus
Zhang Meizhao Zhang Zhaoqi Zheng Chunbo Li Jiqing (Ocean University of Qingdao,266003) (Wendeng Fisheries Bureau,Shandong, 264400)
The metabolism of juvenile Janpanese flounder(indevadual body weight 2.5～87.6 g)was tested at different water temperatures and salinities.The oxygen consumption,CO 2 production and NH 3-N excretion rates of the fish were affected significantly by water temperature and body weight. The RQ and ratio of O/N of Japanese flounder were 0.82±0.08 and 24.4 ±6.4,which meants the energy metabolism of P. olivaceus was diminated by the oxidation of their their protein and lipid .Their mean metabolism rates at slainity 30,25,20,15 were 3.08,3.07,3.87,3.28 J/g·h, respectively,indicating Japanese flounder can adapt a wide range of salinity.
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