Effects of salinity fluctuation amplitudes on growth, osmolarity, Na＋-K＋-ATPase activity and Hsp70 of juvenile Chinese shrimp Fenneropenaeus chinensis Osbeck

• Published in: Chinese journal of oceanology and limnology Vol. 27; no. 4; pp. 723 - 728
• Main Author: 丁森 王芳 董双林 高勤峰
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science Press 01.11.2009; Springer Nature B.V; The Key Laboratory of Mariculture,Ministry of Education,Ocean University of China,Qingdao 266003,China
• Subjects: Amplitude; Amplitudes; Aquaculture; ATP酶活性; Crustaceans; Earth and Environmental Science; Earth Sciences; Eyestalks; Fenneropenaeus chinensis; Gills; Growth rate; Hemolymph; Hepatopancreas; Hsp70 protein; Juveniles; Marine biology; Na+/K+-exchanging ATPase; Oceanography; Osmolarity; Saline water; Salinity; Salinity effects; Seawater; Weight; Weight gain; 中国对虾; 波动幅度; 渗透压; 热休克蛋白70; Hsp70; Na; ATPase activity; osmolarity; growth; salinity fluctuation amplitude; K; Fenneropenaeus chinensis; Na~+-K~+-ATPase activity
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/s00343-009-9185-0

The effects of various salinity fluctuation amplitudes （2, 4, 6 and 8） on the growth, osmolarity, Na＋-K＋-ATPase activity and Hsp70 of juvenile Fenneropenaeus chinensis cultured in seawater with a salinity of 20 were studied. The results show that weight gain in the salinity fluctuation treatments was better than that in control; in particular, the weight gain of treatments S4 and SO, at 231.8% and 196.3%, respectively, was significantly different （P〈0.05）. The hemolymph osmolarity of treatments SO, S2, S4, S6 and S8 was 635.4, 630.8, 623.6, 614.4 and 600.3 mOsm/kg, respectively, and decreased with increasing salinity fluctuation amplitude. The level of Na＋-K＋-ATPase activity in gills ofE chinensis was higher than that in hepatopancreas, but there were no significant differences among all treatments, either in gills or hepatopancreas （P〉0.05）. The relative level of Hsp70 in treatment $4 was 48.4% and 40.4% higher than control in muscle and eyestalks, respectively, with the highest values being recorded under a salinity fluctuation amplitude of 4.