Origin based predominance of Dothideomycetes and Saccharomycetes in the intestinal mycobiota of zebrafish

Fish intestinal mycobiota are hitherto poorly characterized. Using next generation sequencing, we have profiled the intestinal mycobiota of wild caught, laboratory-reared and wild-caught-laboratory-kept zebrafish, which contained more than 15 fungal classes. In wild zebrafish, mycobiota comprised mainly Dothideomycetes, whereas saprotrophic Saccharomycetes were predominant in their laboratory-reared counterparts. This pioneer study shed light into differences in intestinal fungal communities of wild-caught and laboratory-reared zebrafish, thus enriching our knowledge on fish mycobiota.