期刊
MICROORGANISMS
卷 9, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms9061157
关键词
tuna; microbiome; enteric bacteria; fish; barcoding; gut
类别
资金
- THE MOME Projet
- Montpellier University of Excellence (MUSE)
- MOSANE project (JEAI IRD)
- IRD [2017/1004, 2016/1251]
- Measure 77 of the European Maritime and Fisheries Fund (EMFF) [2017/1004, 2016/1251]
This study utilized metabarcoding to investigate the gut bacteriome in three tuna species, finding significant differences in the microbial communities of yellowfin and bigeye tuna as they grow, while the skipjack tuna's bacteriome remained relatively constant. The results suggest that the gut bacteriome of marine fish may not always undergo structural modifications during growth, especially in species with consistent feeding behaviors throughout their lifetime.
In recent years, a growing number of studies sought to examine the composition and the determinants of the gut microflora in marine animals, including fish. For tropical tuna, which are among the most consumed fish worldwide, there is scarce information on their enteric bacterial communities and how they evolve during fish growth. In this study, we used metabarcoding of the 16S rDNA gene to (1) describe the diversity and composition of the gut bacteriome in the three most fished tuna species (skipjack, yellowfin and bigeye), and (2) to examine its intra-specific variability from juveniles to larger adults. Although there was a remarkable convergence of taxonomic richness and bacterial composition between yellowfin and bigeyes tuna, the gut bacteriome of skipjack tuna was distinct from the other two species. Throughout fish growth, the enteric bacteriome of yellowfin and bigeyes also showed significant modifications, while that of skipjack tuna remained relatively homogeneous. Finally, our results suggest that the gut bacteriome of marine fish may not always be subject to structural modifications during their growth, especially in species that maintain a steady feeding behavior during their lifetime.
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