Co-occurring nematodes and bacteria in submarine canyon sediments

Submarine canyon Acidobacteria
DOI: 10.7717/peerj.5396 Publication Date: 2018-07-31T10:17:41Z
ABSTRACT
In submarine canyon sediments, bacteria and nematodes dominate the benthic biomass play a key role in nutrient cycling energy transfer. The diversity of these communities remains, however, poorly studied. This work aims at describing composition nematode Lacaze-Duthiers north-western Mediterranean Sea. We targeted three sediment depths for two consecutive years investigated using nuclear markers (18S rRNA 16S genes). High throughput sequencing combined to maximal information coefficient (MIC) statistical analysis allowed us identify, first time, same small scale, community structures co-occurrence Operational Taxonomic Units across cores. associations detected by MIC revealed marked patterns co-occurrences between could be linked ecological requirements individual nematodes. For bacterial community, Delta- Gammaproteobacteria sequences were most abundant, as seen some canyons earlier, although Acidobacteria, Actinobacteria Planctomycetes have been prevalent other sediments. 20 identified genera included feeders Terschellingia, Eubostrichus, Geomonhystera, Desmoscolex Leptolaimus. present study provides new data on further highlights importance small-scale sampling an accurate vision deep-sea communities.
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