Título: EVALUATION OF THE ANTIVIRAL ACTIVITY OF NATURAL SUBSTANCES OBTAINED FROM BACTERIA AND ALGAE AGAINST VIRAL HAEMORRHAGIC SEPTICEMIA VIRUS
Resumen: Viral haemorrhagic septicaemia virus (VHSV) infects a wide range of freshwater and marine fish species, causing high mortality rates in susceptible cultured fish, mainly salmonids (Smail and Snow, 2011). A prophylactic practise to enhance the natural resistance of farmed fish to viral infections is the use of functional food. Extracellular polymers (ECPs) from probiotic bacteria are postbiotics that represent a valid and safe alternative for providing beneficial effects against microorganisms in fish (Domínguez Maqueda et al., 2024; García-Márquez et al., 2023). Macroalgae and microalgae are also alternative sources of substances with potential activity to improve resistance to microbial infections (Abdala-Díaz et al., 2021; Parra-Riofrio et al., 2023). The objective of this study was to evaluate the antiviral activity of ECPs from the probiotic bacteria Shewanella putrefaciens Pdp11 and Bacillus pumilus UMA169, as well as extracts and/or polysaccharides from Ulva rigida and Porphyridium cruentum, against a freshwater VHSV isolate.
Congreso: Aquaculture Europe, Valencia 2025
