Probiotic Integration for Aquatic Animal Health
Summary
Probiotic integration in aquaculture involves the deliberate administration of beneficial microorganisms to aquatic animals in order to enhance host health, optimise growth performance and reduce reliance on antibiotics. These live microbial preparations, which may include bacteria, yeasts or filamentous fungi, act through multiple mechanisms: they modulate the indigenous gut microbiota, strengthen barrier integrity, stimulate immune defences and produce bioactive metabolites such as short-chain fatty acids. Across finfish and shellfish species, dietary supplementation or water-borne delivery of probiotics has been shown to improve nutrient utilisation, elevate antioxidant capacity and increase resistance to environmental stressors and pathogens. The global significance of probiotic strategies lies in their potential to support sustainable intensification of aquaculture, mitigate disease outbreaks and lessen the ecological footprint of production systems. Practical applications span larval rearing of marine fish, grow-out of freshwater species and crustacean hatchery management, illustrating the versatility of probiotic interventions in diverse husbandry contexts.
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Probiotic Integration for Aquatic Animal Health publication trend
The graph below shows the total number of articles in probiotic integration for aquatic animal health across all publications each year (not limited to Nature Index journals).
Technical terms
Probiotic: A live microorganism that, when administered in adequate amounts, confers a health benefit on the host by modulating microbiota and immune responses.
Microbiota: The community of microorganisms inhabiting the gastrointestinal tract, which influences digestion, immunity and overall host physiology.
Short-chain fatty acids (SCFAs): Organic acids such as acetate, propionate and butyrate produced by microbial fermentation, which serve as energy sources for enterocytes and regulators of immune function.
Tight junction proteins: Transmembrane and cytoskeletal components (e.g. claudins, occludin, zonula occludens) that maintain epithelial barrier integrity and prevent pathogen translocation.
Immunomodulation: The process by which probiotics influence host immune responses, including enhancement of phagocytosis, modulation of cytokine production and stimulation of antioxidant defences.
References
- Probiotic breakthrough: Clostridium butyricum improved the intestinal SCFAs content, digestive enzymes and antioxidant activities, gut morphology and microbiota composition of largemouth bass. Aquaculture Reports (2024).
- Effects of dietary Clostridium butyricum on the growth performance, digestion, and intestinal health of spotted sea bass (Lateolabrax maculatus). Frontiers in Immunology (2023).
- Dietary Clostridium butyricum Improves Growth Performance and Resistance to Ammonia Stress in Yellow Catfish (Pelteobagrus fulvidraco). Aquaculture Nutrition (2022).
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