Dataset Information

Effects of aging on the skin and gill microbiota of farmed seabass and seabream.

ABSTRACT:

Background

Important changes in microbial composition related to sexual maturation have been already reported in the gut of several vertebrates including mammals, amphibians and fish. Such changes in fish are linked to reproduction and growth during developmental stages, diet transitions and critical life events. We used amplicon (16S rRNA) high-throughput sequencing to characterize the skin and gill bacterial microbiota of farmed seabass and seabream belonging to three different developmental age groups: early and late juveniles and mature adults. We also assessed the impact of the surrounding estuarine water microbiota in shaping the fish skin and gill microbiota.

Results

Microbial diversity, composition and predicted metabolic functions varied across fish maturity stages. Alpha-diversity in the seabass microbiota varied significantly between age groups and was higher in older fish. Conversely, in the seabream, no significant differences were found in alpha-diversity between age groups. Microbial structure varied significantly across age groups; moreover, high structural variation was also observed within groups. Different bacterial metabolic pathways were predicted to be enriched in the microbiota of both species. Finally, we found that the water microbiota was significantly distinct from the fish microbiota across all the studied age groups, although a high percentage of ASVs was shared with the skin and gill microbiotas.

Conclusions

We report important microbial differences in composition and potential functionality across different ages of farmed seabass and seabream. These differences may be related to somatic growth and the onset of sexual maturation. Importantly, some of the inferred metabolic pathways could enhance the fish coping mechanisms during stressful conditions. Our results provide new evidence suggesting that growth and sexual maturation have an important role in shaping the microbiota of the fish external mucosae and highlight the importance of considering different life stages in microbiota studies.

SUBMITTER: Rosado D

PROVIDER: S-EPMC7934244 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Publications

Effects of aging on the skin and gill microbiota of farmed seabass and seabream.

Rosado Daniela D Pérez-Losada Marcos M Pereira Ana A Severino Ricardo R Xavier Raquel R

Animal microbiome 20210112 1

<h4>Background</h4>Important changes in microbial composition related to sexual maturation have been already reported in the gut of several vertebrates including mammals, amphibians and fish. Such changes in fish are linked to reproduction and growth during developmental stages, diet transitions and critical life events. We used amplicon (16S rRNA) high-throughput sequencing to characterize the skin and gill bacterial microbiota of farmed seabass and seabream belonging to three different develop ...[more]

PMID: 33499971

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Dataset Information

Effects of aging on the skin and gill microbiota of farmed seabass and seabream.

Background

Results

Conclusions

Publications

Effects of aging on the skin and gill microbiota of farmed seabass and seabream.

Similar Datasets

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