Skin and gut microbiomes of tadpoles vary differently with host and water environment: a short-term experiment using 16S metabarcoding

Santos, Bárbara; Martins, Filipa M. S.; Sabino-Pinto, Joana; Licata, Fulvio; Crottini, Angelica

doi:10.1038/s41598-023-43340-2

Cited by 3 publications

(1 citation statement)

References 62 publications

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“…variations in light, temperature, or UV exposure) and thus internal cavities may represent a more stable environment relative to the environment experienced by a skin community (Costello et al 2009 ). Secondly, internal cavities are under reduced colonization or invasion pressure relative to a skin microbiota; potential colonizers of internal cavities must be introduced through breathing or food consumption compared to a skin microbiota, which is exposed to the entire ‘microbial soup’ of the environment (Grönroos et al 2019 , Harrison et al 2019 , Vila et al 2019 , Berggren et al 2023 , Santos et al 2023 ). Internal cavities of migratory organisms may be under even less colonization pressure during migration due to fasting or altered feeding regimes, which may reduce exposure to new organisms during the migratory process (Klinner et al 2020 ).…”

Section: Insight From Simulationsmentioning

confidence: 99%

Long-distance movement dynamics shape host microbiome richness and turnover

Pearman,

Duffy,

Gemmell

et al. 2024

FEMS Microbiology Ecology

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Host-associated microbial communities are shaped by host migratory movements. These movements can have contrasting impacts on microbiota, and understanding such patterns can provide insight into the ecological processes that contribute to community diversity. Furthermore, long-distance movements to new environments are anticipated to occur with increasing frequency due to host distribution shifts resulting from climate change. Understanding how hosts transport their microbiota with them could be of importance when examining biological invasions. Although microbial community shifts are well-documented, the underlying mechanisms that lead to the restructuring of these communities remain relatively unexplored. Using literature and ecological simulations, we develop a framework to elucidate the major factors that lead to community change. We group host movements into two types—regular (repeated/cyclical migratory movements, as found in many birds and mammals) and irregular (stochastic/infrequent movements that do not occur on a cyclical basis, as found in many insects and plants). Ecological simulations and prior research suggest that movement type and frequency, alongside environmental exposure (e.g. internal/external microbiota) are key considerations for understanding movement-associated community changes. From our framework, we derive a series of testable hypotheses, and suggest means to test them, to facilitate future research into host movement and microbial community dynamics.

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Section: Insight From Simulationsmentioning

confidence: 99%

Long-distance movement dynamics shape host microbiome richness and turnover

Pearman,

Duffy,

Gemmell

et al. 2024

FEMS Microbiology Ecology

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Effects of parental care on skin microbial community composition in poison frogs

Fischer,

Xue,

Costello

et al. 2024

Preprint

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Parent-offspring interactions constitute the first contact of many newborns with their environment, priming community assembly of microbes through priority effects. Early exposure to microbes can have lasting influences on the assembly and functionality of the host’s microbiota, leaving a life-long imprint on host health and disease. Studies of the role played by parental care in microbial acquisition have primarily focused on humans and hosts with agricultural relevance. Anuran vertebrates offer the opportunity to examine microbial community composition across life stages as a function of parental investment. In this study, we investigate vertical transmission of microbiota during parental care in a poison frog (FamilyDendrobatidae), where fathers transport their offspring piggyback-style from terrestrial clutches to aquatic nurseries. We found that substantial bacterial colonization of the embryo begins after hatching from the vitelline envelope, emphasizing its potential role as microbial barrier during early development. Using a laboratory cross-foster experiment, we demonstrated that poison frogs performing tadpole transport serve as a source of skin microbes for tadpoles on their back. To study how transport impacts the microbial skin communities of tadpoles in an ecologically relevant setting, we sampled frogs and tadpoles of sympatric species that do or do not exhibit tadpole transport in their natural habitat. We found more diverse microbial communities associated with tadpoles of transporting species compared to a non-transporting frog. However, we detected no difference in the degree of similarity between adult and tadpole skin microbiotas, based on whether the frog species exhibits transporting behavior or not. Using a field experiment, we confirmed that tadpole transport can result in the persistent colonization of tadpoles by isolated microbial taxa associated with the caregiver’s skin, albeit often at low abundance. This is the first study to describe vertical transmission of skin microbes in anuran amphibians, showing that offspring transport may serve as a mechanism for transmission of parental skin microbes. Overall, these findings provide a foundation for further research on how vertical transmission in this order impacts host-associated microbiota and physiology.

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Environmental microbial reservoir influences the Hydra-associated bacterial communities

Bathia,

Miklos,

Gyulai

et al. 2024

Preprint

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Microbes from the surrounding environment serve as potential colonizers for animal microbiome. We studied the impact of environmental water on microbial communities in freshwater Hydra using correlational and experimental methods. Hydra polyps and water samples were collected from 15 Hungarian lakes, and bacterial community composition was assessed via 16S sequencing. Correlation analyses and neutral modeling evaluated the impact of water microbiota on geographical variation in Hydra microbiota. In the lab, field-collected Hydra polyps from three populations were cultured in either native water or water from another location. Our findings revealed that lake water bacteria significantly contribute to Hydra microbial communities, but the compositional profile remained stable when cultured in different water sources. These results indicate that while water serves as a source for bacterial colonization, Hydra's microbial communities demonstrate resilience to environmental invasion from freshwater sources.

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Skin and gut microbiomes of tadpoles vary differently with host and water environment: a short-term experiment using 16S metabarcoding

Cited by 3 publications

References 62 publications

Long-distance movement dynamics shape host microbiome richness and turnover

Long-distance movement dynamics shape host microbiome richness and turnover

Effects of parental care on skin microbial community composition in poison frogs

Environmental microbial reservoir influences the Hydra-associated bacterial communities

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