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Comparative studies on the intestinal health of wild and cultured ricefield eel (Monopterus albus)

文献类型： 外文期刊

作者： Yang, Hang 1 ; Yuan, Quan 1 ; Rahman, Mohammad Mizanur 3 ; Lv, Weiwei 1 ; Huang, Weiwei 1 ; Hu, Wei 4 ; Zhou, Wenzong 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai, Peoples R China

2.Shanghai Acad Agr Sci, Key Lab Integrated Rice Fish Farming Ecosyst, Minist Agr & Rural Affairs, Shanghai 201403, Peoples R China

3.Univ Chittagong, Inst Marine Sci, Chattogram, Bangladesh

4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Hubei Hongshan Lab, Wuhan, Peoples R China

关键词： Monopterus albus; intestinal health; gut barrier; intestinal microbiota; intestinal tissue morphology

期刊名称：FRONTIERS IN IMMUNOLOGY （ 影响因子：5.7； 五年影响因子：6.8 ）

ISSN： 1664-3224

年卷期： 2024 年 15 卷

页码：

收录情况： SCI

摘要： Fish intestinal health under intensive aquaculture mode plays an important role in growth, development, and immune function. The present study was aimed to systematically investigate the differences of intestinal health between wild and cultured Monopterus albus by biochemical parameters, histomorphology, and molecular biology. A total of 15 healthy M. albus per group, with an average body weight of 45 g, were sampled to analyze intestinal health parameters. Compared with wild fish, the cultured M. albus in the foregut had lower trypsin, lipase, SOD, CAT, T-AOC, and GSH-Px activities (P < 0.05) and higher amylase activity and MDA content (P < 0.05). The villus circumference and goblet cells in the cultured group were significantly lower than those in the wild group (P < 0.05). In addition, the cultured fish showed lower relative expression levels of occludin, zo-1, zo-2, claudin-12, claudin-15, mucin5, mucin15, lysozyme, complement 3, il-10, tgf-beta 1, tgf-beta 2, and tgf-beta 3 (P < 0.05) and higher il-1 beta, il-6, il-8, tnf-a, and ifn gamma mRNA expressions than those of wild fish (P < 0.05). In terms of gut microbiota, the cultured group at the phylum level displayed higher percentages of Chlamydiae and Spirochaetes and lower percentages of Firmicutes, Bacteroidetes, Actinobacteria, Cyanobacteria, and Verrucomicrobia compared to the wild group (P < 0.05). At the genus level, higher abundances of Pseudomonadaceae_Pseudomonas and Spironema and lower abundances of Lactococcus and Cetobacterium were observed in the cultured group than in the wild group (P < 0.05). To our knowledge, this is the first investigation of the intestinal health status between wild and cultured M. albus in terms of biochemistry, histology, and molecular biology levels. Overall, the present study showed significant differences in intestinal health between wild and cultured M. albus and the main manifestations that wild M. albus had higher intestinal digestion, antioxidant capacity, and intestinal barrier functions than cultured M. albus. These results would provide theoretical basis for the subsequent upgrading of healthy aquaculture technology and nutrient regulation of intestinal health of cultured M. albus.

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