Effects of Intermittent and Chronic Hypoxia on Fish Size and Nutrient Metabolism in Tiger Puffer (Takifugu rubripes)

文献类型： 外文期刊

第一作者： Ma, Qiang

作者： Ma, Qiang;Zhang, Renxiao;Wei, Yuliang;Liang, Mengqing;Xu, Houguo;Wei, Yuliang;Liang, Mengqing;Xu, Houguo;Zhang, Renxiao

作者机构：

关键词： intermittent hypoxia; chronic hypoxia; nutrients metabolism; hypoxia-inducible factor; marine deoxygenation

期刊名称：ANIMALS （ 影响因子：2.7； 五年影响因子：3.2 ）

ISSN： 2076-2615

年卷期： 2024 年 14 卷 17 期

页码：

收录情况： SCI

摘要： Intermittent and chronic hypoxia are common stresses to marine fish, but the different responses of fish to intermittent and chronic hypoxia have not been well-known. In this study, tiger puffers were farmed in normoxia conditions (NO, 6.5 +/- 0.5 mg/L), intermittent hypoxia (IH, 6.5 +/- 0.5 mg/L in the day and 3.5 +/- 0.5 mg/L in the night), or choric hypoxia (CH, 3.5 +/- 0.5 mg/L) conditions for 4 weeks, after which the growth, nutrient metabolism and three hif alpha isoforms expression were measured. Both intermittent and chronic hypoxia decreased the fish growth and visceral weight but increased the feed conversion ratio and blood hemoglobin content. Chronic hypoxia but not intermittent hypoxia promoted protein synthesis and whole-fish protein content by activating mtor gene expression and promoted the glycolysis pathway by activating gene expression of hif1 alpha and hif2 alpha. Intermittent hypoxia but not chronic hypoxia decreased the hepatic lipid synthesis by inhibiting fasn and srebf1 gene expression. Meanwhile, intermittent hypoxia reduced the monounsaturated fatty acid content but increased the n-3 polyunsaturated fatty acids percentage. The results of this study clarified the adaptive mechanism of tiger puffer to intermittent and chronic hypoxia, which provides important information about mechanisms of hypoxia adaption in fish.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序