| 于娜,李加儿,区又君,范春燕,张建生.2011.盐度胁迫对鲻鱼幼鱼鳃丝Na+/K+-ATP酶活力 和体含水量的影响.动物学杂志,46(1):93-99. |
| 盐度胁迫对鲻鱼幼鱼鳃丝Na+/K+-ATP酶活力 和体含水量的影响 |
| Effects of Salinity Stresses on Gill Na+/K+-ATPase(NAK)Activity and Body Moisture in Juvenile Grey Mullet Mugil cephalus |
| 投稿时间：2010-06-30 修订日期：2010-11-01 |
| DOI： |
| 中文关键词: 盐度胁迫 鲻鱼 Na+/K+-ATP酶 体含水量 |
| 英文关键词:Mugil cephalus Salinity stresses Gill NAK Body moisture |
| 基金项目:广东省科技计划项目(No.2007B020708005); |
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| 中文摘要: |
| 研究了环境盐度急性胁迫对鲻鱼幼鱼(Mugil cephalus)鳃丝Na+/K+-ATPase (NKA)活性及体内含水量的影响。结果表明,将幼鱼从S33(盐度33)的对照组中直接转移至S0(盐度0)、S10(盐度10)、S20(盐度20)、S33和S40(盐度40)的水体中,随盐度降低各盐度处理的死亡率迅速升高。各处理组鱼的鳃丝NKA活性在最初3 d内出现一定波动,随后变化平稳。实验结束时(12 d),NKA活性随盐度梯度呈"∩"型分布,最终(12 d时),S10、S20处理组酶活性显著高于其他处理组(P<0.05),S33处理组活性最低。不同盐度的去内脏组和全鱼组含水量比较结果均为S0>S20>S10>S33>S40。从总体结果来看,鲻鱼幼鱼在9 d左右适应不同盐度的水环境。在稳定期,全鱼组(12 d)与去内脏组(14 d)比较,除S0处理组的鲻鱼含水量去内脏组大于全鱼组,其余各组都是全鱼组大于去内脏组。 |
| 英文摘要: |
| In this paper,the gill Na+/K+-ATPase (NKA) activity and the body moisture in juvenile grey mullet Mugil cephalus were investigated after 12 d stress at different ambient salinities (0-40).The results showed that the mortality rate of the juvenile grey mullet were 31.7%,28.3%,6.7%,3.3% and 13.4%,respectively when the fishes were suddenly transferred from control group(salinity was 33) into S0(salinity was 0),S10,S20,S33 (control) and S40 treatments.The gill NKA activity fluctuated in the first 3 d,and then changed smooth1y in all treatments.At the end of experiment (12 d),the NKA activity varied with salinity grade in a ″∩ ″shape,being significantly higher in salinity S10 and S20 (P<0.05) groups while the lowest in S33 group.The body moisture content of visceral removal group showed a trend of S0 > S20 > S10 > S33 > S40 while that of whole fish group showed a trend of S0 > S20 > S10 > S33 > S40.All the results revealed that the juvenile grey mullet could adapt to different salinity environments in 9 days.Comparing with the visceral removal group (14 d),the moisture content of whole fish group (12 d) was higher except for the S0 treatment group. |
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