title: The bacterial community of amphioxus and habitat microbiome
design: The habitat sample was the sediment of the locus that amphioxus captured.The feces sample was collected from the mixture of 6 female and male amphioxus after 1 hour of amphioxus cultured in the sterile seawater. Fecal samples from the mixture of 6 female and male amphioxus, which had cultivated in the lab for more than three months, were collected.