文章摘要
贾倩倩,吕为群.低盐胁迫对褐牙鲆成鱼血浆渗透压、皮质醇、生长激素和催乳素的影响[J].上海海洋大学学报,2016,25(1):71-77
低盐胁迫对褐牙鲆成鱼血浆渗透压、皮质醇、生长激素和催乳素的影响
Effects of low salinity stress on plasma osmolality, cortisol, prolactin and growth hormone of Japanese flounder, Paralichthys olivaceus
投稿时间:2015-01-07  修订日期:2015-06-10
DOI:10.12024/jsou.20150101296
中文关键词: 褐牙鲆  低盐胁迫  渗透压  激素  血浆离子
英文关键词: Paralichthys olivaceus  low salinity stress  plasma osmolality  hormone  plasma ion
基金项目:国家自然科学基金(41376134);高等教育博士点基金知识服务平台项目(20113104110002)
作者单位E-mail
贾倩倩 上海海洋大学 水产与生命学院, 上海 201306  
吕为群 上海海洋大学 水产与生命学院, 上海 201306 wqlv@shou.edu.cn 
摘要点击次数: 1341
全文下载次数: 1257
中文摘要:
      将褐牙鲆成鱼由盐度30直接转入盐度3的低盐海水(实验组)和30的海水(对照组)中,并在转移前0 h(空白组),转移后8 h、1 d、2 d、5 d、8 d和14 d采样,分析急性低盐胁迫对血浆渗透压、血浆皮质醇(COR)、催乳素(PRL)、生长激素(GH)及离子浓度的影响。结果显示,实验期间对照组中血浆的各项指标与空白组样品无差异;盐度3实验组中,渗透压、Na+、Cl-均在1~2 d下降至最低且显著低于对照组,随后在该水平上波动;K+逐渐上升,1 d到达最高值,2 d时回落但仍高于对照组,之后保持平衡;COR在转移至低盐后1 d时上升至2 d时下降并低于对照组;血浆GH在1 d时显著下降至最低,后有所回升,但低于对照组;PRL于1 d时下降至最低,2 d时逐渐上升,显著高于对照组。上述结果表明: 褐牙鲆成鱼具有成熟完善的渗透压调节机制,在急性低盐环境胁迫下,COR、PRL、GH等激素的共同作用能在短期内调整机体适应盐度变化,并建立新的内环境稳态。
英文摘要:
      Transferring adult Japanese flounder (Paralichthys olivaceus) directly from salinity 30 into salinity 3 and 30, effects of abrupt low salinity stress on plasma osmolality, cortisol(COR), prolactin(PRL), growth hormone(GH) were studied after 0 h, 8 h, 1 d, 2 d, 5 d, 8 d and 14 d, and the changes of Na+, K+ and Cl- in the plasma were also monitored. Results showed that, all plasma indicators had no significant changes between control group and 0h blank group; after transfer to salinity 3, plasma osmolality decreased in 8 h, continued to decline in 1 d, and then rose slightly in 2 d and then kept stable; the levels of Na+ and Cl- showed similar changes, decreased in 8h-1d, then stabilized; K+ gradually increased after transferring into salinity 3, then rose to the highest level in 1 d, while in 2 d it dropped to the level that was slightly higher than control group; the concentration of COR in plasma rose to the highest value in 1 d, then declined in 2 d, significantly lower than control group; PRL level reduced firstly then elevated 2 d,and it was significantly higher than the value in 30‰ seawater. Plasma GH in experimental group decreased in 1 d and then remained the lower level. As a euryhaline fish, Japanese flounder has strong adaptability to abrupt low salinity stress,and it could increase or decrease hormones rapidly, such as COR, PRL, GH, to re-establish a new internal environment homeostasis.
HTML 查看全文     下载PDF阅读器
关闭