The purpose of this study was to confirm the limit of salinity tolerance in juvenile olive flounders (Paralichthys olivaceus) by changes in blood parameters, AChE, antioxidant and stress responses. The P. olivaceus (mean weight 38.8 ± 4.2 g and mean length 16.4 ± 1.2 cm) were exposed to different concentrations of salinity (seawater, 16, 8, 4, 2, and 0 psu) for 2 weeks. Plasma osmotic pressure was significantly decreased in the P. olivaceus at 0 psu. Hematological parameters such as hematocrit and hemoglobin were significantly decreased in the P. olivaceus at low salinity. Plasma components also changed significantly in the low salinity environment. As a stress indicator, cortisol was significantly increased at low salinity. SOD and GST antioxidant responses, were significantly increased. GSH level in the liver was significantly increased, whereas a significant decrease was observed in the gill GSH level. AChE was significantly increased in P. olivaceus at low salinity. The results of this study indicate that exposure to salinities lower than 8 psu leads to changes in hematological parameters, neurotransmitter, antioxidant and stress responses of P. olivaceus.

这项研究的目的是通过血液参数，AChE，抗氧化剂和应激反应的变化来确认幼年比目鱼（Paralichthys olivaceus）的耐盐性极限。将橄榄假单胞菌（平均体重38.8±4.2 g，平均长度16.4±1.2 cm）暴露于不同浓度的盐度（海水，16、8、4、2和0 psu）中2周。血浆渗透压显著在降低牙鲆在0 PSU。橄榄假单胞菌的血液学参数（如血细胞比容和血红蛋白）显着降低低盐度。在低盐度环境中，血浆成分也发生了显着变化。作为压力指标，皮质醇在低盐度下显着增加。SOD和GST的抗氧化反应显着增加。肝脏中的GSH水平显着升高，而ill GSH水平则显着下降。在低盐度下，橄榄假单胞菌的AChE显着增加。这项研究的结果表明，盐度低于8 psu会导致寡果假单胞菌的血液学参数，神经递质，抗氧化剂和应激反应发生变化。