Effects of Salinity on Biogenic Amines,Hemolymph Osmotic Pressure,and Activity of Gill’s Na+/K+‐ATPase in Charybdis japonica (Crustacea,Decapoda) |
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| Authors: | Liu Hong‐Yu Pan Lu‐Qing Zheng Debin |
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| Institution: | The Key Laboratory of Mariculture of Chinese, Ministry of Education, Ocean University of China, Qingdao 266003, China |
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| Abstract: | The effects of salinity on hemolymph osmotic pressure, gill Na+/K+‐ATPase activity and dopamine (DA), norepinephrine (NE), serotonin (5‐HT) in the gills, and hemolymph of the adult Charybdis japonica were studied. DA levels increased significantly (P < 0.05), while the NE and 5‐HT revealed contrary change in hemolymph and gills. The iso‐osmotic point of C. japonica (911.4 mOsm/kg) was at salinity of 27.87 ppt. The Na+/K+‐ATPase activity of gill showed negative correlation with salinity in the hypotonic environment (<27.87 ppt). The results of this experiment indicated that C. japonica had great capability to acclimate to low salinity. |
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