Fish intestinal microbiome: diversity and symbiosis unravelled by metagenomics.
TLDR
This review aims to summarize the available knowledge on fish gastrointestinal communities obtained from metagenomics, including biases from sample processing, factors influencing assemblage structure, intestinal microbiology of important aquaculture species and description of the teleostean core microbiome.Abstract:
The gut microbiome of vertebrates plays an integral role in host health by stimulating development of the immune system, aiding in nutrient acquisition and outcompeting opportunistic pathogens. Development of next-generation sequencing technologies allows researchers to survey complex communities of microorganisms within the microbiome at great depth with minimal costs, resulting in a surge of studies investigating bacterial diversity of fishes. Many of these studies have focused on the microbial structure of economically significant aquaculture species with the goal of manipulating the microbes to increase feed efficiency and decrease disease susceptibility. The unravelling of intricate host-microbe symbioses and identification of core microbiome functions is essential to our ability to use the benefits of a healthy microbiome to our advantage in fish culture, as well as gain deeper understanding of bacterial roles in vertebrate health. This review aims to summarize the available knowledge on fish gastrointestinal communities obtained from metagenomics, including biases from sample processing, factors influencing assemblage structure, intestinal microbiology of important aquaculture species and description of the teleostean core microbiome.read more
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Autochthonous probiotic bacteria modulate intestinal microbiota of Pirarucu, Arapaima gigas
Gabriella do Vale Pereira,Gabriella do Vale Pereira,Scheila Anelise Pereira,Arno Soares,José Luiz Pedreira Mouriño,Daniel L. Merrifield +5 more
TL;DR: Both strains could populate the intestinal mucosa of A. gigas and could be used as probiotics in pirarucu production as they can influence hematoimmunological parameters and decrease the abundance of pathogenic bacteria in the gut of pirarUCu within 21 days of feeding.
Journal ArticleDOI
Presence of Lactic Acid Bacteria in the Intestinal Tract of the Mediterranean Trout (Salmo macrostigma) in Its Natural Environment.
Massimo Iorizzo,Gianluca Albanese,Bruno Testa,Mario Ianiro,Francesco Letizia,Mariantonietta Succi,Patrizio Tremonte,Mariasilvia D'Andrea,Nicolaia Iaffaldano,Raffaele Coppola +9 more
Abstract: Knowledge of the composition of the gut microbiota in freshwater fish living in their natural habitat has taxonomic and ecological importance. Few reports have been produced on the composition of the gut microbiota and on the presence of LAB in the intestines of freshwater fish that inhabit river environments. In this study, we investigated the LAB community that was present in the gastrointestinal tract (GIT) of Mediterranean trout (Salmo macrostigma) that colonized the Biferno and Volturno rivers of the Molise region (Italy). The partial 16S rRNA gene sequences of these strains were determined for the species-level taxonomic placement. The phylogenetic analysis revealed that the isolated LABs belonged to seven genera (Carnobacterium, Enterococcus, Lactobacillus, Lactiplantibacillus, Vagococcus, Lactococcus, and Weissella). The study of the enzymatic activities showed that these LABs could contribute to the breakdown of polysaccharides, proteins, and lipids. In future studies, a greater understanding of how the LABs act against pathogens and trigger the fish immune response may provide practical means to engineer the indigenous fish microbiome and enhance disease control and fish health.
Journal ArticleDOI
Health Characteristics and Blood Bacterial Assemblages of Healthy Captive Red Drum: Implications for Aquaculture and Fish Health Management
TL;DR: Blood characteristics of cultured Red Drum Sciaenops ocellatus are investigated to demonstrate the potential for these bacterial communities to be linked to immunological characteristics often used as biomarkers for fish health and provide further evidence for the tissue microbiota hypothesis.
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Reviews and syntheses: Bacterial bioluminescence – ecology and impact in the biological carbon pump
TL;DR: This article first reviews current knowledge on bioluminescent bacteria symbiosis in light organs, then focuses on gut-associated bacteria, and proposes a strategy, at a worldwide scale, relying on recently developed instrumentation and methodological tools to quantify the impact of biolumscent bacteria in the biological carbon pump.
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Potential Use of Microbial Community Genomes in Various Dimensions of Agriculture Productivity and Its Management: A Review
TL;DR: This article reviewed various aspects of metagenomics from experimental methods to techniques used for sequencing, as well as diversified computational resources, including databases and software tools, to focus on a wider range of applications of meetagenomics and its association studies.
References
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