Intestinal microbiota shifts by dietary intervention during extreme heat summer episodes in farmed gilthead sea bream (Sparus aurata)

The aim of this study was to gain more insights on this issue, examining the effect of the record breaking-heat summer of 2022 on the gut microbiota of farmed gilthead sea bream (Sparus aurata), reared from May to August at the IATS research infrastructure (Spain Mediterranean coast). Fish were fed daily with four experimental diets, containing two different lipid levels (16% and 14%) with/without a commercial emulsifier (0.1%; Volamel Aqua, Nukamel). On August 9th, concurrently with the historical record of water temperature (30.49 C), fish were sampled for analysis of blood-stress markers and water/intestinal microbiota. These are the samples for this study.