Impact of Fishmeal Replacement in Diets for Gilthead Sea Bream (Sparus aurata) on the Gastrointestinal Microbiota Determined by Pyrosequencing the 16S rRNA Gene

Impact of Fishmeal Replacement in Diets for Gilthead Sea Bream (Sparus aurata) on the Gastrointestinal Microbiota Determined by Pyrosequencing the 16S rRNA Gene

cite: Estruch, Guillem, et al. “Impact of fishmeal replacement in diets for gilthead sea bream (Sparus aurata) on the gastrointestinal microbiota determined by pyrosequencing the 16S rRNA gene.” PloS one 10.8 (2015): e0136389.

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Abstract

Microbiota data was collected from stomach, foregut, midgut, and hindgut.

Results:

Reduce the survival ratio: 88% to 60%
Microbiota of the water was also analysed inorder to study the mutual impact of the system.

Alpha diversity has no significant different between diet switch groups.

Photobacterium and Streptococcus which were highly represented in the AA0 and FM100 diets

Proteobacteria was more related to wheatmeal, while Firmicutes were more abundant in fishmeal

Aquaculture environment

Flavobacteriaceae, Rhodobacteraceae, and Saprospiraceae are pretty common in Aquaculture environment.

In this study, Rhodobacteraceae was found in higher percentages in wheatmeal group. This shows that food could affect the colonization of GIT by bacteria present in the surrounding water

Diet switch

• Contributed the low survival ratio to anti-nutrition factors, tannins, for example.
• Enterobacteriaceae was abundant in wheatmeal in responsible to the digestion of polysaccharide.
• Corynebacterium, Propionibacterium, and Clostridium were abundant in fishmeal gut.
• Diversity and Richness were not significantly changed
• Higher percentage of Proteobacteria (Which related to high efficiency of nutrition absorption)
• variate in individuals? …