Spain.- Researchers of CIIMAR (Centro Interdisciplinar De Investigação Marinha e Ambiental, Portugal), ALGAPLUS Lda (Ílhavo, Portugal) and IATS Nutrigenomics group have reported the positive effects of 5% dietary supplementation of an aqueous extract of the seaweed Gracilaria sp on sea bass antioxidant capacity and resistance against a bacterial infection.
The study revealed that fish fed the Gracilaria extract showed a delay in mortality after infection with Photobacterium damselae. This beneficial effect was supported by plasma biochemical analysis, liver enzymatic assays and tissue gene expression data that pointed out an up-regulation of immune and antioxidant related pathways in fish fed the dietary supplement.
This work was partially funded by the IMPROV-SEABASS Transnational Access of AQUAEXCEL2020 project at IATS-CSIC facilities.
This study has been published in the Open Access journal Scientific Reports.
Reference (open):
Peixoto, M.J., Ferraz, R., Magnoni, L.J. et al. Protective effects of seaweed supplemented diet on antioxidant and immune responses in European seabass (Dicentrarchus labrax) subjected to bacterial infection. Sci Rep 9, 16134 (2019) doi:10.1038/s41598-019-52693-6 https://www.nature.com/articles/s41598-019-52693-6
Source: IATS
Editor at the digital magazine AquaHoy. He holds a degree in Aquaculture Biology from the National University of Santa (UNS) and a Master’s degree in Science and Innovation Management from the Polytechnic University of Valencia, with postgraduate diplomas in Business Innovation and Innovation Management. He possesses extensive experience in the aquaculture and fisheries sector, having led the Fisheries Innovation Unit of the National Program for Innovation in Fisheries and Aquaculture (PNIPA). He has served as a senior consultant in technology watch, an innovation project formulator and advisor, and a lecturer at UNS. He is a member of the Peruvian College of Biologists and was recognized by the World Aquaculture Society (WAS) in 2016 for his contribution to aquaculture.
