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Comparison of Intestinal Bacteria of Procambarus clarkii Farmed in Various Rice Paddy Regions

文献类型： 外文期刊

作者： Ding, Chonghang 1 ; Jia, Rui 2 ; Wang, Yunfeng 3 ; Hou, Yiran 2 ; Zhang, Liqiang 2 ; Li, Bing 2 ; Zhu, Jian 1 ;

作者机构： 1.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China

2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Integrated Rice Fish Farming Ecol, Minist Agr & Rural Affairs, Wuxi 214081, Peoples R China

3.Fishery Technol Extens Stn Yunnan, 25 Dianchi Rd, Kunming 650034, Peoples R China

关键词： Procambarus clarkii; integrated rice-crayfish co-culture; intestinal microbiota; microbial diversity; co-occurrence networks

期刊名称：ANIMALS （ 影响因子：3.0； 五年影响因子：3.2 ）

ISSN： 2076-2615

年卷期： 2024 年 14 卷 6 期

页码：

收录情况： SCI

摘要： Simple Summary Procambarus clarkii, an important freshwater species in China, is predominantly cultivated in an integrated rice-crayfish co-culture system. However, potential regional differences in the quality of P. clarkii have been scarcely reported. Therefore, the aim of this study was to assess the regional differences of P. clarkii through analyzing gut microbiota composition in specimens from ten major producing areas in China. Microbial sequencing analysis demonstrated that P. clarkii across various regions exhibit distinct microbial diversity and composition. These data would contribute to the assessment of the quality of P. clarkii aquaculture. The aim of this study was to assess the regional differences of Procambarus clarkii through analyzing gut microbiota in specimens from different areas in China. The P. clarkii were collected from ten integrated rice-crayfish farming systems locating across ten major producing areas as follows: Feixi (FX), Suqian (SQ), Yangzhou (YZ), Xuyi (XY), Qianjiang (QJ), Jianli (JL), Honghu (HH), Yueyang (YY), Changsha (CS), and Nanxian (NX). The composition of gut microbiota was assessed by analyzing 16S rRNA sequences. The PCoA results indicated significant differences in microbial community composition among the ten areas (R = 0.999, p = 0.001). The intestinal microbial diversity in P. clarkii cultured in rice fields from YY and CS exceeded that of other regions, with NX displaying the least diversity. At the phylum level, Proteobacteria were most abundant in HH, while Firmicutes showed increased relative abundances in FX and SQ, contrasted by lower relative abundances of Bacteroidetes in these areas. At the genus level, Ralstonia, Amedibacillus, Bacteroides, Anaerorhabdus, and Dysgonomonas were the dominant bacteria. The bacterial co-occurrence networks analysis revealed that the community structures in locations FX, SQ, XY, HH, and NX were comparatively simplistic, whereas those in the YZ, QJ, JL, YY, and CS regions displayed as more complex. In summary, the diversity and relative abundance of intestinal bacteria exhibits regional variability. These findings can offer theoretical data for evaluating the quality of P. clarkii aquaculture.

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