ArticleFish physiology and biochemistry2026
A comparative analysis of serum biochemistry, gene expression, and gut microbiota in domestication-susceptible and domestication-resistant mandarin fish (Siniperca chuatsi).
Article in Fish physiology and biochemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The feeding behavior of mandarin fish (Siniperca chuatsi) is unique in that it exclusively preys on live fish throughout its life. Feed-based mandarin fish production has become central to aquaculture, yet domestication success remains low. This study examines intrinsic factors underlying poor feed acceptance in mandarin fish, alongside traits of domestication-susceptible individuals (group A) through a comprehensive comparison. The results showed that: compared to domestication-resistant mandarin fish (group B): (1) the glucose content and amylase activity in the serum of group A are significantly levels higher; (2) compared with domestication-resistant mandarin fish (group B), domestication-susceptible fish (group A) showed significantly higher serum glucose content and amylase activity. Glycolipid metabolism-related genes, including phosphofructokinase (pfk), phosphoenolpyruvate carboxykinase (pepck), glutamic-pyruvic transaminase (gpt), and lipoprotein lipase (lpl), were significantly upregulated in the liver of group A. In the brain, orexigenic genes, including agouti-related peptide (agrp) and neuropeptide Y (npy), were upregulated, whereas anorexigenic genes, including cocaine- and amphetamine-regulated transcript (cart) and pro-opiomelanocortin (pomc), were downregulated in group A. Taste receptor genes, including t1r1 and t1r3, were downregulated in the tongue and lips of group A. Retinal function-related genes, including etinol dehydrogenase 8(rdh8), cellular retinol-binding protein (crbp), and retinal G protein-coupled receptor (rgr), were upregulated in group A, whereas learning/memory-related genes were downregulated; (3) gut microbiota differed markedly between groups, with Firmicutes dominating A and Proteobacteria B; metabolic functions showed greater divergence. These findings reveal differences in metabolic rate, visual/taste perception, and microbiota function, informing artificial selection for domestication.
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