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  1. Article: Strain-Specific Benefits of

    Han, Congjie / Song, Shizhen / Cui, Congcong / Cai, Yan / Zhou, Yongcan / Wang, Jiawen / Bei, Weilie / Zhang, Dongdong / Guo, Weiliang / Wang, Shifeng

    Animals : an open access journal from MDPI

    2024  Volume 14, Issue 7

    Abstract: In the realm of modern aquaculture, the utilization of probiotics has gained prominence, primarily due to their ability to enhance growth, boost immunity, and prevent diseases in aquatic species. This study primarily investigates the efficacy ... ...

    Abstract In the realm of modern aquaculture, the utilization of probiotics has gained prominence, primarily due to their ability to enhance growth, boost immunity, and prevent diseases in aquatic species. This study primarily investigates the efficacy of
    Language English
    Publishing date 2024-03-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2606558-7
    ISSN 2076-2615
    ISSN 2076-2615
    DOI 10.3390/ani14071062
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Strain-Specific Benefits of

    Han, Congjie / Shi, Huizhong / Cui, Congcong / Wang, Jiawen / Li, Ling / Bei, Weilie / Cai, Yan / Wang, Shifeng

    Antioxidants (Basel, Switzerland)

    2024  Volume 13, Issue 3

    Abstract: In the dynamic field of intensive aquaculture, the strategic application of probiotics has become increasingly crucial, particularly for enhancing resistance to environmental stressors such as ammonia-nitrogen. Over a 42-day period, this study ... ...

    Abstract In the dynamic field of intensive aquaculture, the strategic application of probiotics has become increasingly crucial, particularly for enhancing resistance to environmental stressors such as ammonia-nitrogen. Over a 42-day period, this study investigated the effects of different probiotic strains-
    Language English
    Publishing date 2024-03-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox13030317
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Epidemiological characteristics of Streptococcus agalactiae in tilapia in China from 2006 to 2020

    Zhang, Defeng / Liu, Zhigang / Ren, Yan / Wang, Yinggang / Pan, Houjun / Liang, Dingwu / Bei, Weilie / Chang, Ouqin / Wang, Qing / Shi, Cunbin

    Aquaculture. 2022 Feb. 25, v. 549

    2022  

    Abstract: Group B Streptococcus (GBS) is the major causative pathogen of streptococcosis in tilapia, leading to a massive economic loss in the aquaculture industry worldwide. To date, the epidemiological characterization of tilapia GBS in China remains limited. ... ...

    Abstract Group B Streptococcus (GBS) is the major causative pathogen of streptococcosis in tilapia, leading to a massive economic loss in the aquaculture industry worldwide. To date, the epidemiological characterization of tilapia GBS in China remains limited. Thus, the aim of this study was to determine the phenotype and genotype of GBS strains in tilapia in China from 2006 to 2020. A total of 678 GBS strains were isolated from farmed tilapia in the past decade. The CAMP reaction of GBS strains was investigated, and the cfb gene of the CAMP negative strains was sequenced and analysed. The genotypic distribution of these strains was determined by molecular serotyping, multi-locus sequence typing (MLST), virulence genotyping, and prophage genotyping. All GBS strains were divided into two serotypes (Ia and Ib), two sequence types (STs; ST7 and ST261), five virulence genotypes (V1–V5), and three prophage genotypes (P1-P3). A total of six genotypes (I–VI) were obtained based on serotyping, MLST, virulence genotyping, and prophage genotyping. Among them, strains in genotypes I, II, III, and IV were primarily prevalent from 2006 to 2015, and those in genotypes V and VI were the dominant epidemic strains from 2012 to 2020. Moreover, genotype VI strains showed a substantial population explosion from 2011 to 2020 and were mainly distributed in the geographically proximate provinces of Guangdong, Guangxi, Hainan, and Fujian. This is first report of tilapia Ia-GBS CAMP negative strains, and the strains were probably from the same hatchery. Genetic diversity in tilapia GBS strains has been high in China over the past decade, especially from 2010 to 2015. The genotypes of the tilapia GBS strains underwent obvious variation, and the prevalent strains in recent years have harboured more virulence-related genes. This study provides a better understanding of the epidemiology, pathogenesis, and evolutionary mechanism of tilapia GBS strains.
    Keywords Streptococcus agalactiae ; aquaculture ; aquaculture industry ; financial economics ; genes ; genetic variation ; genotype ; hatcheries ; multilocus sequence typing ; pathogenesis ; pathogens ; phenotype ; population growth ; serotypes ; virulence ; China
    Language English
    Dates of publication 2022-0225
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 185380-6
    ISSN 0044-8486 ; 0044-8516
    ISSN 0044-8486 ; 0044-8516
    DOI 10.1016/j.aquaculture.2021.737724
    Database NAL-Catalogue (AGRICOLA)

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