Enzyme‐producing bacteria isolated from fish gut: a review

By A. Ray, K. Ghosh, E. Ringø. 2012

668 citations recorded by the source corpus.

Digestion of food depends on three main factors: (i) the ingested food and the extent to which the food is susceptible to the effects of digestive enzymes, (ii) the activity of the digestive enzymes and (iii) the length of time the food is exposed to the action of the digestive enzymes. Each of these factors is affected by a multitude of secondary factors. The present review highlights the experimental results on the secondary factor, enzymatic activity and possible contribution of the fish gut microbiota in nutrition. It has been suggested that fish gut microbiota might have positive effects to the digestive processes of fish, and these studies have isolated and identified the enzyme-producing microbiota. In addition to Bacillus genera, Enterobacteriaceae and Acinetobacter, Aeromonas, Flavobacterium, Photobacterium, Pseudomonas, Vibrio, Microbacterium, Micrococcus, Staphylococcus, unidentified anaerobes and yeast are also suggested to be possible contributors. However, in contrast to endothermic animals, it is difficult to conclude the exact contribution of the gastrointestinal microbiota because of the complexity and variable ecology of the digestive tract of different fish species, the presence of stomach and pyloric caeca and the relative intestinal length. The present review will critically evaluate the results to establish whether or not intestinal microbiota do contribute to fish nutrition.

Subfields: Aquatic Science, Immunology, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/978cb1a3075180da89c91b98c12e44f5acd944e5

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Citations in the corpus

Genus bacillus, promising probiotics in aquaculture: Aquatic animal origin, bio-active components, bioremediation and efficacy in fish and shellfish (2019, background): “Chitin is considered as the second most abundant biological material in the world after cellulose that forms a major constituent of many fish food organisms, viz., protozoans, coelenterates, crustaceans, mollusks, fungi, and green algae (Ray et al., 2012).”
Effect of dietary components on the gut microbiota of aquatic animals. A never‐ending story? (2016, neutral): “Exogenous cellulase Several studies have shown that the intestinal microbiota of aquatic animals harbours cellulosedecomposing micro-organisms, including sequences related to Anoxybacillus, Bacillus, Carnobacterium, Citrobacter, Clostridium, Leuconostoc, Staphylococcus, Acinetobacter, Phaeobacter, P”
Intestinal microbiota of healthy and unhealthy Atlantic salmon Salmo salar L. in a recirculating aquaculture system (2018, background): “…have shown that patients with infl ammatory bowel diseases show reduced microbial diversity and abundance of specifi c phyla, such as Bacteroidetes and Firmicutes, together with increased Proteobacteria, including the family Enterobacteriaceae (Blumberg and Powrie, 2012; Reveco et al., 2014).”
Intestinal bacterial community structure differs between healthy and inflamed intestines in Atlantic salmon (Salmo salar L.) (2014, background): “The fish intestinal microbiota has an important role in regulating nutrient digestion, immune responses, intestinal differentiation, disease resistance and colonization of potential pathogens (Bates et al., 2006; Kanther and Rawls, 2010; Merrifield et al., 2010; Nayak, 2010; Ray et al., 2012).”
Bacterial symbiosis in the fish gut and its role in health and metabolism (2017, methodology): “Thus, GIT microbiota gains special attention by degrading different types of substances including cellulose, lipid, protein, phytate and chitin (Roy et al. 2009; Ray et al. 2012).”
Tenebrio molitor meal in diets for European sea bass (Dicentrarchus labrax L.) juveniles: Growth performance, whole body composition and in vivo apparent digestibility (2016, background): “Other enzyme-producing bacteria have been isolated from the gut of many fish species (Ray et al., 2012): protease-and/or lipase-producing bacteria (Vibrio, Acinetobacter, Enterobacteriaceae, Pseodomonas) have been isolated from sea bass larvae (Gatesoupe et al.”
Combined effects of exogenous enzymes and probiotic on Nile tilapia (Oreochromis niloticus) growth, intestinal morphology and microbiome (2016, background): “…to 295 produce fibre-degrading enzymes that may complement endogenous enzyme activity for 296 digestion in fish (Roy et al., 2009, Ray et al., 2010, Ray et al., 2012) as well as the external 297 exogenous enzyme capacity to increase the availability of suitable substrates for probiotic 298 action…”
The Gut Microbiota of Marine Fish (2018, positive): “Of these Aeromonas, Photobacterium, Pseudomonas and Vibrio have all been identified as fish gut microbiota that might aid digestion (Ray et al., 2012).”