Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (5): 857-866.DOI: 10.3969/j.issn.1004-1524.20250307

• Animal Science • Previous Articles     Next Articles

Metabolome analysis of embryos of Megalobrama terminalis at different developmental stages

YU Yongqing1,2(), TANG Hong1,2, JIAN Jieliang2, GU Zhimin1,2,*(), GUAN Wenzhi2,*()   

  1. 1 College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
    2 Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2025-04-15 Online:2026-05-25 Published:2026-06-02

Abstract:

To investigate the types, dynamic variation patterns and regulatory metabolic pathways of metabolites during different developmental stages of Megalobrama terminalis embryos, a non-targeted metabolomic approach based on liquid chromatography-mass spectrometry (LC-MS) was employed to analyze embryo samples collected at the gastrula stage (17 h), neurula stage (25 h), somitogenesis stage (32 h), tail bud stage (41 h), muscular effect stage (50 h) and heart beating stage (58 h). The results showed that a total of 952 metabolites were detected, mainly including lipids and lipid-like molecules, organic acids and derivatives, and organoheterocyclic compounds. Comparative analysis of differential metabolites revealed that 9,11-tetradecadienedioylcarnitine and paraldehyde were unique to Megalobrama terminalis embryos at 32 h of development, while sepiapterin, stearaldehyde and β-nitropropionic acid were specific metabolites at 58 h. KEGG enrichment analysis indicated that metabolic pathways such as nucleotide metabolism, ABC transporters and aminoacyl-tRNA biosynthesis exerted important biological functions in the processes of genetic material and protein biosynthesis, energy metabolism and signal transduction during embryonic development of Megalobrama terminalis. The findings of this study can provide theoretical support for improving the hatching rate of fertilized eggs of Megalobrama terminalis.

Key words: Megalobrama terminalis, embryonic development, metabolomics, differential metabolites, high-efficiency hatching

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