Ontogeny drives shifts in skin bacterial communities in facultatively paedomorphic salamanders.
Microbiology (Reading)
; 169(10)2023 10.
Article
em En
| MEDLINE
| ID: mdl-37815535
ABSTRACT
Microbiomes are major determinants of host growth, development and survival. In amphibians, host-associated bacteria in the skin can inhibit pathogen infection, but many processes can influence the structure and composition of the community. Here we quantified the shifts in skin-associated bacteria across developmental stages in the striped newt (Notophthalmus perstriatus), a threatened salamander species with a complex life history and vulnerable to infection by the amphibian chytrid fungus Batrachochytrium dendrobatidis and ranavirus. Our analyses show that pre-metamorphic larval and paedomorphic stages share similar bacterial compositions, and that the changes in the microbiome coincided with physiological restructuring during metamorphosis. Newts undergoing metamorphosis exhibited microbiome compositions that were intermediate between paedomorphic and post-metamorphic stages, further supporting the idea that metamorphosis is a major driver of host-associated microbes in amphibians. We did not find support for infection-related disruption of the microbiome, though infection replicates were small for each respective life stage.
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Base de dados:
MEDLINE
Assunto principal:
Urodelos
/
Microbiota
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article