Insights in the Size Heterogeneity of Lates calcarifer: Expression of Growth and Immune-related Genes

文献类型： 外文期刊

第一作者： Fu, Zhengyi

作者： Fu, Zhengyi;Yang, Rui;Zhou, Shengjie;Ma, Zhenhua;Yu, Gang;Fu, Zhengyi;Yang, Rui;Zhou, Shengjie;Ma, Zhenhua;Yu, Gang;Fu, Zhengyi;Yang, Rui;Zhou, Shengjie;Ma, Zhenhua;Yu, Gang;Fu, Zhengyi

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关键词： Size heterogeneity; Lates calcarifer; Gene expression; Growth; Immune

期刊名称：PAKISTAN JOURNAL OF ZOOLOGY （ 影响因子：0.831； 五年影响因子：0.768 ）

ISSN： 0030-9923

年卷期： 2021 年 53 卷 6 期

页码：

收录情况： SCI

摘要： Significant size heterogeneity in barramundi Lates calcarifer juveniles has been frequently reported in hatchery practices. Huge variation of mortality in different size grade of juvenile fish has also been observed. In order to explore the effect of size heterogeneity on gene expression level of barramundi juveniles, we graded them according to body length and selected growth-related genes (GHRH, GH, GHR, IGF-I, IGF-II, MSTN-1 and MSTN-2), and immune-related genes (IL8, IL10, TGF beta 1, TNF, INF-gamma 1, Mx, CRP, C3, C4, mTOR, mLST8, eIF4E, HSP70 and HSP90) to measure their relative expression level. Results from the present study indicate that the expression level of GHR, IGF-I and IGF-II is consistent with body length, but there is no similar rule between GHRH, GH, mstn-1 and mstn-2. TOR pathway related genes were more actively expressed in L grade. Heat shock protein has no obvious rule in body length grade. L grade pro-inflammatory cytokines were up-regulated, but anti-inflammatory cytokines were down-regulated and inflammatory markers were up-regulated, indicating an obvious inflammatory response. The expression levels of S and M grade anti-inflammatory and proinflammatory cytokines was more balanced. This study provides the basis for finding the relationship between size heterogeneity and gene expression level of barramundi juveniles, and may provide insights for further understanding on the causes of size heterogeneity.

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