16S rDNA amplicon sequencing of the oral cavity microbiome of the common dolphin, harbour porpoise and stripped dolphin
DNA was extracted from swab sample using the PureLinkTM Genomic DNA Mini Kit (Genomed), according to the instructions provided by the supplier with few modifications. The gene for the bacterial ribossomal subunit 16S was amplified using universal primers  which targeted a segment comprising the variable region V4.