水生态学杂志Issue(4)：68-73,6.
不同盐度下3种罗非鱼的Na＋-K＋-ATPase活性比较
Na+-K+-ATPase Activity of Blackchin Tilapia,Nile Tilapia and Israel Red Tilapia at Different Salinities
摘要
Abstract
This study focused on the effects of salinity on Na+-K+-ATPase activities in gills and kidneys of Blackchin tilapia(Sarotherodon melanotheron),Nile tilapia (Oreochromis niloticus)and Israel red tilapia (Oreo-chromis sp.).Na+-K+-ATPase activities at different salinities(0,10,20 and 30)were measured with ATPase test kit.The results were as follows:(1 )Salinity significantly affected the Na+-K+-ATPase activities of different tis-sues,fish species and interactions between different treatments had no significant effect on Na+-K+-ATPase activi-ty;(2)Na+-K+-ATPase activities in gills and kidneys of Blackchin tilapia,Nile tilapia and Israel red tilapia all increased with the rise of salinity,among which Na+-K+-ATPase activity of Blackchin tilapia rose sharply ,fol-lowed by Israel red tilapia and Nile tilapia.Na+-K+-ATPase activity of Nile tilapia was relatively stronger at low salinity,while the activity of Na+-K+-ATPase for blackchin tilapia was relatively stronger at high salinity,indica-ting that the Na+-K+-ATPase activity of tilapia was related to their salt tolerance;(3 )Na+-K+-ATPase activity in gills of Blackchin tilapia was higher than that of Israel red tilapia when the salinity was above 7.19,and higher than that of Nile tilapia when the salinity was above 1 1 .94.Na+-K+-ATPase activity in kidneys of Blackchin tilapia was higher than that of Nile tilapia when the salinity was above 18.42;(4)Except for Nile tilapia at the salinities of 20 and 30,and Israel red tilapia at the salinity of 30,Na+-K+-ATPase activities in gills of the three species wese all higher than those of in kidneys,the reaction of Na+-K+-ATPase activity in kidney was stronger than in gill,indica-ting that the gill of tilapias was much more responsible for osmoregulation than kidney.关键词
萨罗罗非鱼/尼罗罗非鱼/以色列红罗非鱼/Na+-K+-ATPase活性/盐度Key words
Blackchin tilapia/Nile tilapia/Israel red tilapia/Na+-K+-ATPase activity/salinities分类
生物科学引用本文复制引用
李学军,程臆臻,胡灿灿,宋东蓥..不同盐度下3种罗非鱼的Na＋-K＋-ATPase活性比较[J].水生态学杂志,2014,(4):68-73,6.基金项目
国家自然科学基金项目（30972252）；河南省重点科技攻关项目（122102310357）；河南省水产学省级重点学科资助。 （）
