水生生物学报Issue(6)：1150-1159,10.DOI:10.7541/2015.151
细胞质膜在罗非鱼和叉尾斗鱼低温驯化过程中的功能
THE FUNCTIONAL SIGNIFICANCE OF THE PLASMA MEMBRANE IN COLD ACCLIMATION OF TWO FISH SPECIES：THE TILAPIA (OREOCHROMIS NILOTICUS) AND THE PARADISE FISH (MACROPODUSOPERCULARIS)
摘要
Abstract
In this study, we initially compared the cold tolerance of the Genetically Improved Farmed Tilapia (GIFT) strain of Nile tilapia (Oreochromis niloticus) and the paradise fish (Macropodus opercularis) with a series of scientific indices, such as the temperature at death (TAD), the cumulative degree hours (CDH) and the survival curves. Next, we systematically studied the effects of low temperatures on a series of plasma membrane-related physiological functions, such as membrane fluidity, endocytosis and the activity of the membrane protein Na+, K+-ATPase in both species. The results showed that the paradise fish had a better cold tolerance than did the GIFT. The plasma membrane-related physiological functions were all sensitive in low temperatures of both fishes. However, these sensitivities were different between the hardy species (paradise fish) and the non-hardy species (GIFT). The patterns and tendencies concerning sensitivity changes during varied temperatures were consistent in each species. All these interspecific differences and intras-pecific consistence highlighted the importance of the membrane fluidity during the cold acclimation. These results suggest that the plasma membrane, particularly membrane fluidity, may play an important role in cold acclimation of the two fish species.关键词
罗非鱼/叉尾斗鱼/低温/细胞质膜/膜流动性/细胞内吞作用/钠钾泵Key words
Tilapia/Paradise fish/Low temperatures/Plasma membrane/Membrane fluidity/Endocytosis/Na+, K+-ATPase分类
生物科学引用本文复制引用
段志刚,吴金英,葛岩岩,詹绪良,李文笙..细胞质膜在罗非鱼和叉尾斗鱼低温驯化过程中的功能[J].水生生物学报,2015,(6):1150-1159,10.基金项目
The China Agriculture Research System (CARS-49) （CARS-49）
the Agriculture Research Special Funds (3-49-10) （3-49-10）
