水产学报2017，Vol.41Issue(9)：1383-1391,9.DOI:10.11964/jfc.20160110229
不同盐度对斜带石斑鱼幼鱼血清离子浓度和激素水平的影响及其与鳃MRCs渗透调节功能的关系
Effects of various salinities stress on the relationship between concentrations of ions, hormones in serum and gill mitochondrion-rich cells osmotic regulations of Epinephelus coioides junveniles
摘要
Abstract
Effects of low salinity stress on the relationship between concentrations of ions,hormones in serum and gill mitochondrion-rich cells osmotic regulations of Epinephelus coioides juveniles were studied.E.coioides juveniles relayed in the seawater with salinity of 30 were directly transferred to water with salinities at 5,10,20,and 30,while those in seawater with salinity of 30 were taken as the control group.Na+,K+,Cl-concentrations and cortisol (COR) in serum ofE.coioides juveniles were investigated at 7 d and 15 d after transferring,and then the distributions and changes of the mitochondrion-rich cells (MRCs) in gills were studied.The results showed that Na+ and C1-concentrations in serum significantly increased with the rise of water salinity (P＜0.05),while there were no significant differences with K+ concentration at different salinities (P＞0.05).COR level in water with salinities 5 and 10 were significantly higher than that in water with salinity 20 and the control group (P＜0.05).The volume and quantity of MRCs were increased,and the volume of MRCs in water with salinity 20 and control group were significantly greater than that in water with salinities 5 and 10 (P＜0.05).There was a special apical membrane in gill MRCs.The apical surfaces of gill MRCs in water with salinities 5 and 10 were generally flat with dense microvilli-like projections.In contrast,the gill MRCs in water with salinity 20 control group exhibited deeply invaginated surfaces with smaller orifices without projections In the light of this study,E.coioides juveniles can survive in water at salinities above 5,and the fresh water aquiculture ofE.coioides is feasible.关键词
斜带石斑鱼/盐度/血清离子/血清激素/鳃线粒体丰富细胞Key words
Epinephelus coioides/salinity/serum ions/hormones/mitochondrion-rich cells分类
农业科技引用本文复制引用
王雯,区又君,温久福,李加儿,谢木娇,陈世喜..不同盐度对斜带石斑鱼幼鱼血清离子浓度和激素水平的影响及其与鳃MRCs渗透调节功能的关系[J].水产学报,2017,41(9):1383-1391,9.基金项目
广东省科技计划(2015A020209041)Science and Technology Planning Project of Guangdong Province (2015A020209041) （2015A020209041）
