Metabarcoding of eDNAbyss water samples. CCR_CEB_CDX

Water from different depths was prefiltered in situ using Salsa pump or collected in CTD bottled before being filtered onboard to retain small cell sizes or nucleic acids (DNA/RNA). Nucleic acids were extracted from filters and submitted to a PCR-ligation protocols using 6 sets of primers pairs targeting metazoans (2 primer pairs targeting a fragment of Cytochrome Oxydase I and one of rDNA18S V1-V2), microeukaryotes (2 primer pairs targeting rDNA 18S V4 and V9) and prokaryotes (2 sets of primer pairs targeting rDNA16S V4-V5 respectively defined for prokaryotes in general, and archaebacterial in particular).