From alien species to alien communities: Interactions between host- and habitat associated microbiomes in an alien amphibian from the Caribbean

We analysed the skin and gut microbiome of Eleutherodactylus johnstonei from native range populations in St Lucia and exotic range populations in Colombia, Europe and Guadeloupe in combination with the respective environmental matrix communities through a 16S metabarcoding approach. We show that amphibian associated and environmental microbial communities form meta-communities that are determined by both selective niche effects and the transmission of microbes between communities.