Convergence of gut microbiotas in the adaptive radiations of African cichlid fishes

The ISME Journal
Laura BaldoWalter Salzburger

Abstract

Ecoevolutionary dynamics of the gut microbiota at the macroscale level, that is, in across-species comparisons, are largely driven by ecological variables and host genotype. The repeated explosive radiations of African cichlid fishes in distinct lakes, following a dietary diversification in a context of reduced genetic diversity, provide a natural setup to explore convergence, divergence and repeatability in patterns of microbiota dynamics as a function of the host diet, phylogeny and environment. Here we characterized by 16S rRNA amplicon sequencing the gut microbiota of 29 cichlid species from two distinct lakes/radiations (Tanganyika and Barombi Mbo) and across a broad dietary and phylogenetic range. Within each lake, a significant deviation between a carnivorous and herbivorous lifestyle was found. Herbivore species were characterized by an increased bacterial taxonomic and functional diversity and converged in key compositional and functional community aspects. Despite a significant lake effect on the microbiota structure, this process has occurred with remarkable parallels in the two lakes. A metabolic signature most likely explains this trend, as indicated by a significant enrichment in herbivores/omnivores of bacterial ...Continue Reading

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Citations

Feb 13, 2019·FEMS Microbiology Ecology·Josh J Faber-HammondSuzy C P Renn
Jul 22, 2019·Molecular Ecology·François-Étienne SylvainNicolas Derome
Oct 22, 2020·Molecular Ecology·Qi HuangKenneth M Y Leung
Dec 23, 2020·The ISME Journal·Matthew A LemayLaura Wegener Parfrey
Jul 10, 2021·Frontiers in Microbiology·Kuanguan HuangXuguo Zhou
Aug 2, 2021·Microbiome·Pil Soo KimJin-Woo Bae
Dec 25, 2021·Frontiers in Microbiology·Tamir OfekMalka Halpern

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Methods Mentioned

BETA
Illumina sequencing

Software Mentioned

Galaxy
vegan R package
PICRUSt
uclust
Qiime
group

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