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. 2018 Sep 1;6(3):92.
doi: 10.3390/microorganisms6030092.

Gut Bacterial Communities in Geographically Distant Populations of Farmed Sea Bream (Sparus aurata) and Sea Bass (Dicentrarchus labrax)

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Gut Bacterial Communities in Geographically Distant Populations of Farmed Sea Bream (Sparus aurata) and Sea Bass (Dicentrarchus labrax)

Eleni Nikouli et al. Microorganisms. .

Abstract

This study investigated the profile of the autochthonous gut bacterial communities in adult individuals of Sparus aurata and Dicentrarchus labrax reared in sea cages in five distantly located aquaculture farms in Greece and determine the impact of geographic location on them in order to detect the core gut microbiota of these commercially important fish species. Data analyses resulted in no significant geographic impact in the gut microbial communities within the two host species, while strong similarities between them were also present. Our survey revealed the existence of a core gut microbiota within and between the two host species independent of diet and geographic location consisting of the Delftia, Pseudomonas, Pelomonas, Propionibacterium, and Atopostipes genera.

Keywords: aquaculture; bacteria; intestine; microbiota; teleosts.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Flower diagram of the shared operational taxonomic units (OTU) between Sparus aurata and Dicentrarchus labrax individuals from different aquaculture sites in Greece.
Figure 2
Figure 2
Dissimilarity vs. overlap correlation of all the possible sample pairs of the gut bacterial operational taxonomic units between different Sparus aurata and Dicentrarchus labrax aquaculture sites in Greece.
Figure 3
Figure 3
Ratio of positive to total (PT) correlations (Pearson, −0.7 > R > 0.7, p < 0.05) of the most dominant operational taxonomic units (OTUs) in Sparus aurata and Dicentrarchus labrax individuals from aquaculture sites in Greece. Vertical lines indicate standard error.

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