| 曾霖,雷霁霖,刘滨,洪万树,艾春香,高淳仁.2014.盐度对大菱鲆幼鱼鳃Na -K -ATPase活力、血清离子浓度 和激素水平的影响.动物学杂志,49(3):407-414. |
| 盐度对大菱鲆幼鱼鳃Na -K -ATPase活力、血清离子浓度 和激素水平的影响 |
| Effects of Salinities on Gill Na -K -ATPase Activities, and Serum Concentrations of Ions and Hormones in Juvenile Turbot (Scophthalmus maximus) |
| 投稿时间：2013-06-15 修订日期：2014-03-03 |
| DOI：10.13859/j.cjz.201403013 |
| 中文关键词: 大菱鲆 盐度 Na -K -ATPase 血清离子 生长激素 皮质醇激素 |
| 英文关键词:Scophthalmus maximus Salinity Na -K -ATPase Serum ions Growth hormone Cortisol |
| 基金项目:现代农业产业技术体系专项资金(No. CARS-50) |
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| 中文摘要: |
| 采用饲养试验方法，研究了平均体质量为（7.16±0.07）g的大菱鲆幼鱼（Scophthalmus maximus）分别在盐度（12、18、24、30和36）下饲养60 d后，其鳃Na -K -ATPase活力、血清离子浓度、生长激素（GH）、皮质醇激素（COR）、特定生长率（SGR）和饲料效率（FCE）的变化。结果表明：幼鱼鳃Na -K -ATPase活力、血清Na 浓度均随盐度的升高而上升，分别在3.48～8.30 μmol ADP/mg protein/h和169.99～180.00 mmol/L之间，其中12盐度组最低，36盐度组最高。幼鱼血清中K 和Cl-浓度分别在2.20～3.47 mmol/L 和136.67～142.00 mmol/L之间，各盐度组间差异不显著。幼鱼血清中GH和COR浓度分别在0.41～1.66 ng/ml和35.33～76.41 ng/ml之间；其中GH在36盐度组最高，12盐度组最低，而COR在12盐度组最高，36盐度组最低。幼鱼SGR和FCE分别在1.45～2.00 %/d和1.12～1.38%之间，两者均为12盐度组最低，但与盐度的相关性不显著。由此可见，盐度变化显著影响大菱鲆幼鱼鳃Na -K -ATPase活力、血清Na 浓度和激素含量。本研究对大菱鲆养殖生理生态条件分析具有重要参考意义，研究结果可为大菱鲆养殖的盐度选择提供理论依据。 |
| 英文摘要: |
| Gill Na -K -ATPase activities, serum concentrations of ions and hormones, specific growth rates and feed conversion efficiency in juvenile turbot (Scophthalmus maximus) (body weight of 7.16±0.07 g), which have been reared at salinities 12, 18, 24, 30 and 36 for 60 days, were investigated. The results showed that Na -K -ATPase activities and Na concentrations were 3.48-8.30 μmol ADP/mg protein/h and 169.99-180.00 mmol/L, respectively, the levels of which increased with the rise of water salinity, the highest ones all were observed at salinity 36, and lowest ones all at salinity 12. Na -K -ATPase activities and Na concentrations in the fish reared at salinity 12 was significantly lower than those in the control (P<0.05). K and Cl- concentrations were 2.37-3.47 mmol/L and 136.67-142.00 mmol/L, respectively, both of which had no significant differences between groups (P>0.05). Growth hormone and cortisol levels were 0.41-1.66 and 35.33-76.41 ng/ml, respectively. Growth hormone levels was the lowest in the fish reared at salinity 12, and the highest at salinity 36, both of which had significant differences in comparison with that of the control (P<0.05); while cortisol levels was the highest at salinity 12, and the lowest at 36, with no significant differences compared with that of the control (P>0.05). Specific growth rates and feed conversion efficiency were 1.45-2.00 %/day and 1.12-1.38%, respectively. Although both were the lowest at salinity 12, they were not significantly correlative with salinity. Thus, the results indicated that the changes in salinity could have significant impacts on Na -K -ATPase activities in gill, concentrations of Na ions, growth hormone and cortisol in serum of juvenile turbot. The results from this study provide important reference for salinity selection in turbot mariculture. |
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