盐度渐变过程对黄条鰤(Seriola aureovittata)幼鱼渗透调节的影响

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英文篇名：Effects of Gradual Salinity Change on Osmotic Regulation of Juvenile Yellowtail Kingfish (Seriola aureovittata) 作者：史宝 ; 柳学周 ; 刘永山 ; 张言祥 ; 高全义 ; 徐永江 ; 王滨 ; 姜燕 ; 宋雪松 英文作者：SHI Bao;LIU Xue-zhou;LIU Yong-shan;ZHANG Yan-xiang;GAO Quan-yi;XU Yong-jiang;WANG Bin;JIANG Yan;SONG Xue-song;Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences;Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao);Dalian Fugu Fishery Co., Ltd.; 关键词：黄条鰤 ; 盐度渐变 ; 渗透压 ; Na~+/K~+-ATP酶 ; 离子浓度 英文关键词：Seriola aureovittata;;gradual salinity change;;osmotic pressure;;Na~+/K~+-ATPase activity;;ion concentration 中文刊名：海岸工程 英文刊名：Coastal Engineering 机构：中国水产科学研究院黄海水产研究所;青岛海洋科学与技术试点国家实验室海洋渔业科学与食物产出过程功能实验室;大连富谷水产有限公司; 出版日期：2019-03-15 出版单位：海岸工程 年：2019 期：01 基金：中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金资助项目——中国-文莱重要海水经济鱼类种质资源评价与利用(2018GH17);; 青岛海洋科学与技术国家实验室海洋渔业科学与食物产出过程功能实验室开放课题——PTEN和MSTN调控黄条鰤肌肉快速生长机制的研究(2017-3A01);; 青岛市民生科技计划项目——黄条鰤繁殖生物学与人工繁育技术(17-3-3-61-nsh);; 现代农业产业技术体系专项经费——池塘养殖岗位(CARS-47);; 中国水产科学研究院黄海水产研究所基本科研业务费专项资金资助项目——lncRNA调控半滑舌鳎卵母细胞成熟机制的研究(20603022017016) 语种：中文; 页：67-74 页数：8 CN：37-1144/U ISSN：1002-3682 分类号：S917.4

摘要

为了解盐度渐变对黄条鰤(Seriola aureovittata)渗透调节的影响,设置自然海水(对照组盐度为29),5,10,15,20,35六个盐度梯度,并对不同盐度下幼鱼鳃丝Na~+/K~+-ATP酶活力、离子浓度、渗透压进行了检测和分析。结果显示:在盐度5～35,黄条鰤尿、血清、血浆的渗透压均随盐度升高而升高,盐度为35时渗透压均为最高,其中尿的渗透压显著高于血清和血浆渗透压。在盐度从29下降的过程中,鳃丝Na~+/K~+-ATP酶活力、离子浓度、渗透压呈现相似的变化规律,都随着盐度的降低而呈现总体下降的趋势;盐度从29升高到35时,各检测指标中仅有尿和血浆的K~+含量无显著变化(P>0.05),其余均显著升高(P<0.05)。实验结果表明,黄条鰤生存和繁衍的自然海水盐度29是幼鱼存活的适宜盐度,在略低的盐度20～29均能较快适应,说明在盐度渐变过程中,黄条鰤幼鱼对外界盐度变化有较强的调节能力。
        Seriola aureovittata is a kind of seawater fish with important ecological and economic value. In order to understand the influence of gradual salinity change on osmotic regulation of juvenile Seriola aureovittata, 6 salinity gradient points are set up, which are the natural seawater with salinity of 29(i.e. the control group) and the seawater with salinity of 5, 10, 15, 20 and 35 respectively, and the gill Na~+/K~+-ATPase activity, ion concentration and osmotic pressure of the juvenile Seriola aureovittata are detected and analyzed under the conditions of different salinity. In the process of salinity decreasing from 29, the gill Na~+/K~+-ATPase activity, the ion concentration and the osmotic pressure present a similar law, that is, all showing an overall downward trend with the decreasing of salinity. When salinity goes up from 29 to 35, only the contents of K~+ in urine and plasma show no significant changes(P>0.05) and all the rest detected indexes are increased significantly(P<0.05). All these results have revealed that the salinity 29 of the natural seawater for Seriola aureovittata to survive and propagate is an optimal salinity for juvenile Seriola aureovittata to survive. In the case of slightly lower salinity 20～29 the juvenile fishes can also adapt quickly. All these indicate that in the process of salinity change the juvenile Seriola aureovittata has strong adjusting ability to the change of external salinity.

引文

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