Gut milieu shapes the bacterial communities of invasive silver carp

Silver carp is an invasive fish present in the Gobindsagar reservoir, India and has a profound impact on aquaculture. Understanding taxonomic diversity and functional attributes of gut microbiota will provide insights into the important role of bacteria in metabolism of silver carp that facilitated...

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Bibliographic Details
Published in:Genomics (San Diego, Calif.) Calif.), 2021-03, Vol.113 (2), p.815-826
Main Authors: Khurana, Himani, Sharma, Monika, Bharti, Meghali, Singh, Durgesh Narain, Negi, Ram Krishan
Format: Article
Language:English
Subjects:
Animals
Carps - microbiology
Exotic fish
Functional profiling
Gastrointestinal Microbiome
Gut microbiome
Intestinal Mucosa - metabolism
Intestinal Mucosa - microbiology
Introduced Species
Invasion
Niche specialization
Silver carp
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Summary:Silver carp is an invasive fish present in the Gobindsagar reservoir, India and has a profound impact on aquaculture. Understanding taxonomic diversity and functional attributes of gut microbiota will provide insights into the important role of bacteria in metabolism of silver carp that facilitated invasion of this exotic species. Microbial composition in foregut, midgut, hindgut and water samples was analysed using 16S rRNA gene amplicon sequencing. The bacterial communities of water samples were distinct from gut microbiota, and unique microbial assemblages were present in different regions of gut depicting profound impact of gut environment on microflora. Proteobacteria was the most abundant phyla across all samples. Ecological network analysis showed dominance of competitive interactions within posteriors region of the gut, promoting niche specialization. Predictive functional profiling revealed the microbiota specialized in digestive functions in different regions of the gut, which also reflects the dietary profile of silver carp. •Gut microbiome analysis of exotic silver carp using amplicon sequencing.•Gut environment drives the microbial community composition of silver carp.•Interspecies interactions indicate niche specialization of microbes in the gut.•Functional profiling depicts the role of gut microflora in digestion of the host.
ISSN:0888-7543
1089-8646
DOI:10.1016/j.ygeno.2021.01.013