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当前位置: 首页 > 文章 > 不同盐度对斜带石斑鱼幼鱼生长和生理的影响 广东海洋大学学报 2011,31 (6) 43-48
Position: Home > Articles > Effects of Different Salinities on Growth and Physiology of Orange-Spotted Grouper, Epinephelus coioides Journal of Guangdong Ocean University 2011,31 (6) 43-48

不同盐度对斜带石斑鱼幼鱼生长和生理的影响

作  者：
王素久;张海发;赵俊;杨宇晴;杨少森
单  位：
广东省大亚湾水产试验中心;华南师范大学生命科学学院
关键词：
斜带石斑鱼;生长;生理;盐度;特定生长率;Na+-K+-ATP酶;消化酶
摘  要：
设置6、12、18、24、30等5个盐度梯度,在循环水养殖条件下饲养体质量56±7.2 g(平均值±标准差,下同)、的斜带石斑鱼幼鱼65 d,研究工厂化养殖条件下,盐度对斜带石斑鱼幼鱼生长、渗透压调节、消化酶活性等的影响。结果表明:盐度12和18组的特定生长率分别为(0.80±0.05)%/d(0.77±0.07)%/d,显著高于其他盐度组(P<0.05),且两者的特定生长率差异不显著(P>0.05);盐度12和18组饵料系数分别为1.20±0.08、1.16±0.03,显著低于其余盐度组(P<0.05),两者的饵料系数差异不显著(P>0.05);鳃丝Na+-K+-ATP酶活性在盐度12时最低;消化酶活性在盐度24时最高;血清中谷草转氨酶(GOT)活性在盐度6时活性最高,其余盐度组之间差异不显著(P>0.05);盐度12与18组血清超氧化物歧化酶(SOD)活性和溶菌酶(lysozyme)活性显著高于其他组(P<0.05)。综合各盐度条件下的生长、饵料转化、生理变化情况,适当降低盐度可提高斜带石斑鱼养殖效益。
译  名：
Effects of Different Salinities on Growth and Physiology of Orange-Spotted Grouper, Epinephelus coioides
作  者：
WANG Su-jiu1,2,ZHANG Hai-fa1,ZHAO Jun2,YANG Yu-qing1,YANG Shao-sen1(1.Guangdong Daya Bay Fishery Development Center,Huizhou 516081,China;2.College of Life Science,South China Normal University,Guangzhou 510631,China)
关键词：
Epinephelus coioides;growth;physiology;salinity;special growth rate;Na+-K+-ATPase;digestive enzyme
摘  要：
Effects of different salinities on growth and physiology of orange-spotted grouper(Epinephelus coioides) reared in recirculating systems was studied.Juvenile orange-spotted groupers,with initial weight 56 ± 7.2 g(mean ± standard error,and the same below)at five different levels of salinity(6,12,18,24 and 30) for 65 days.The special growth rate(SGR) of the grouper at salinity of 12 and 18 was 0.80 ± 0.05 %/d and 0.77 ± 0.07 %/d,respectively,and were significantly higher compared to other groups(P < 0.05).The food conversion ratio of the grouper at salinity of 12 and 18 was 1.20 ± 0.08 and 1.16 ± 0.03,respectively,and were significantly lower compared to other groups(P < 0.05),but there was no significant difference between group of salinity 12 and 18 in special growth rate and food conversion ratio(P > 0.05).The Na+-K+-ATPase activity in gill of the grouper reared at salinity 12 was significantly lower than other groups(P < 0.05).The digestive enzyme activity of group of salinity 24 was significantly higher than other groups(P < 0.05).Glutamic-oxaloacetic transaminase(GOT) activity in blood was significantly higher at salinity 6,and there was no significant difference among the groups of salinity 12,18,24 and 30(P > 0.05).Superoxide dismutase(SOD) and lysozyme activity in blood at salinity 12 and 18 were significantly higher than other groups(P > 0.05).Farming economics could be improved by rearing orange-spotted grouper at lower salinities,with respect to growth rate,food conversion and physiology.

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