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中国农学通报 ›› 2020, Vol. 36 ›› Issue (19): 145-151.doi: 10.11924/j.issn.1000-6850.casb19030127

所属专题: 生物技术 水产渔业

• 水产·渔业 • 上一篇    下一篇

盐度对大麻哈鱼幼鱼肝脏组织学、非特异性免疫酶及消化酶活力的影响

李培伦1, 刘伟1(), 王继隆1, 高文燕1,2, 崔康成1,2   

  1. 1中国水产科学研究院黑龙江水产研究所,哈尔滨 150070
    2上海海洋大学水产与生命学院,上海 201306
  • 收稿日期:2019-03-28 修回日期:2019-09-23 出版日期:2020-07-05 发布日期:2020-07-08
  • 通讯作者: 刘伟
  • 作者简介:李培伦,男,1989年出生,河南平顶山人,助理研究员,硕士,研究方向:鱼类生理生态学。通信地址:150070 黑龙江省哈尔滨市道里区河松街232号 黑龙江水产研究所,E-mail:lpl19890925@163.com。
  • 基金资助:
    中央级公益性科研院所基本科研业务费专项“人工条件下大麻哈鱼生长及繁殖生理特征研究”(HSY201712Q);农业农村部财政专项物种资源保护项目“大麻哈鱼栖息地调查及标志放流效果评估”(2010-2018)

Salinity and Juvenile Chum Salmon (Oncorhynchus keta): Effects on Liver Histomorphology, Non-specific Immune and Digestive Enzymes

Li Peilun1, Liu Wei1(), Wang Jilong1, Gao Wenyan1,2, Cui Kangcheng1,2   

  1. 1Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Science, Harbin 150070
    2College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306
  • Received:2019-03-28 Revised:2019-09-23 Online:2020-07-05 Published:2020-07-08
  • Contact: Liu Wei

摘要:

为研究盐度对大麻哈鱼幼鱼非特异性免疫酶、消化酶活力及肝脏组织结构的影响,试验设置4个盐度组(0‰、8‰、16‰、24‰),周期42天,取肝脏和消化道分别测定非特异性免疫酶和消化酶活力,并观察肝脏组织结构变化。结果表明:大麻哈鱼幼鱼肝脏超氧化物歧化酶、谷胱甘肽过氧化物酶和过氧化氢酶活力变化趋势一致,随着盐度升高均呈现出先上升后下降的趋势,但其活力峰值不同;碱性磷酸酶活力随盐度升高呈现先升后降的趋势,而盐度对各组之间酸性磷酸酶活力无显著影响(P>0.05);盐度对消化道各种消化酶活力影响复杂且各种消化酶之间并未表现出整体效应;组织切片显示盐度0‰、8‰、16‰组肝脏结构正常,而盐度24‰组则呈现一定程度病变。推测体重1 g左右的大麻哈鱼降海洄游时比较适宜的盐度范围介于8‰~16‰之间。

关键词: 大麻哈鱼, 降海洄游, 盐度, 肝脏, 非特异性免疫酶, 消化酶

Abstract:

The paper aims to study the effects of various salinities on liver histomorphology, non-specific immune and digestive enzymes activities in juvenile Chum salmon (Oncorhynchus keta). The Chum salmon was cultured in salinities 0‰, 8‰, 16‰ and 24‰ for 42 days,respectively, we measured the non-specific immune enzyme and digestive enzyme activities by using the liver and digestive tract, and observed the liver structure change under different salinities. The results showed that: the trend of superoxide dismutase, glutathione peroxidase and catalase activities in the liver of juvenile Chum salmon increased first and then decreased with the increase of salinity, but the enzyme activity peaks were different; the alkaline phosphatase activity increased first and then decreased with the increase of salinity, but different salinity treatment groups had no significant effects on acid phosphatase activity (P>0.05); different salinities had complicated effects on various digestive enzymes’ activities in the digestive tract and there was no overall effect between various digestive enzymes; histological observation showed that the liver structure of the salinity group 0‰, 8‰, and 16‰ was normal, while the salinity group 24‰ showed a certain degree of lesions. It is speculated that 8‰-16‰ is the optimal salinity for juvenile Chum salmon with the body weight about 1 g during the catadromous migration period.

Key words: chum salmon, catadromous migration, salinity, liver, non-specific immune enzyme, digestive enzyme

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