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A Comparative Study on Low and High Salinity Tolerance of Two Strains of Pinctada fucata

文献类型： 外文期刊

作者： Sun, Jing 1 ; Chen, Mingqiang 2 ; Fu, Zhengyi 2 ; Yang, Jingru 2 ; Zhou, Shengjie 2 ; Yu, Gang 2 ; Zhou, Wenli 1 ; Ma, Zh 1 ;

作者机构： 1.Tianjin Agr Univ, Coll Fisheries, Tianjin, Peoples R China

2.Sanya Fisheries Res Inst, Sanya, Peoples R China

3.Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou, Peoples R China

4.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Trop Aquaculture Res & Dev Ctr, Sanya, Peoples R China

关键词： Pinctada fucata; salinity; osmotic regulation; respiratory metabolism; antioxidant

期刊名称：FRONTIERS IN MARINE SCIENCE （ 影响因子：4.912； 五年影响因子：5.125 ）

ISSN：

年卷期： 2021 年 8 卷

页码：

收录情况： SCI

摘要： This study compares salinity tolerance between red and black shell Pinctada fucata salinity stress of 20 and 50 parts per thousand, while 35 parts per thousand was used as a control. The hemolymph osmotic pressure, inorganic ion concentration, the activities of Na+-K+-ATPase, respiratory metabolism related enzymes and liver tissue antioxidant related enzymes were measured at 12 and 24 h after salinity stress. The osmotic pressure and inorganic ion concentration of hemolymph of two strains P. fucata increased significantly with the increase of salinity. The activity of Na+-K+-ATPase of red P. fucata only decreased under low salinity at 24 h, and was significantly higher than that the control under low salinity at 12 h and high salinity at 12 and 24 h. The succinate dehydrogenase (SDH) activities of the P. fucata treatment groups were significantly higher than those the control at 12 h. The lactate dehydrogenase (LDH) activity increased significantly with salinity at 12 h. and the black P. fucata LDH activity was significantly higher than the control at 24 h, while the LDH activity of red P. fucata was significantly lower than that the control in 50 parts per thousand salinity. The superoxide dismutase (SOD) activity of black P. fucata was significantly lower than that the control, while that of red P. fucata was significantly higher than that the control within 24. At 12 h, the catalase (CAT) activity of red P. fucata increased significantly with salinity, but decreased significantly with salinity at 24 h. The CAT activity of black P. fucata was highest at 24 h under low salinity. Glutathione peroxidase (GSH-Px) and alkaline phosphatase (AKP) activities of red P. fucata were significantly higher than those the control under low or high salinity. At high salinity for 24 h, the GSH-Px activity was lowest in black P. fucata, AKP activity was highest. The present study indicates that the physical responses of P. fucata to the salinity stress vary with shell colors. The red P. fucata can quickly respond positively to the change of environmental salinity and reduce the damage caused by the change of environmental salinity.

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