Co-occurring nematodes and bacteria in submarine canyon sediments
In submarine canyon sediments, bacteria and nematodes dominate the benthic biomass and play a key role in nutrient cycling and energy transfer. The diversity of these communities remains, however, poorly studied. This work aims at describing the composition of bacteria and nematode communities in th...
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PeerJ Inc.
2018-07-01
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| author | Jadwiga Rzeznik-Orignac Antoine Puisay Evelyne Derelle Erwan Peru Nadine Le Bris Pierre E. Galand |
| author_facet | Jadwiga Rzeznik-Orignac Antoine Puisay Evelyne Derelle Erwan Peru Nadine Le Bris Pierre E. Galand |
| author_sort | Jadwiga Rzeznik-Orignac |
| collection | DOAJ |
| description | In submarine canyon sediments, bacteria and nematodes dominate the benthic biomass and play a key role in nutrient cycling and energy transfer. The diversity of these communities remains, however, poorly studied. This work aims at describing the composition of bacteria and nematode communities in the Lacaze-Duthiers submarine canyon in the north-western Mediterranean Sea. We targeted three sediment depths for two consecutive years and investigated the communities using nuclear markers (18S rRNA and 16S rRNA genes). High throughput sequencing combined to maximal information coefficient (MIC) statistical analysis allowed us to identify, for the first time, at the same small scale, the community structures and the co-occurrence of nematodes and bacteria Operational Taxonomic Units across the sediment cores. The associations detected by MIC revealed marked patterns of co-occurrences between the bacteria and nematodes in the sediment of the canyon and could be linked to the ecological requirements of individual bacteria and nematodes. For the bacterial community, Delta- and Gammaproteobacteria sequences were the most abundant, as seen in some canyons earlier, although Acidobacteria, Actinobacteria and Planctomycetes have been prevalent in other canyon sediments. The 20 identified nematode genera included bacteria feeders as Terschellingia, Eubostrichus, Geomonhystera, Desmoscolex and Leptolaimus. The present study provides new data on the diversity of bacterial and nematodes communities in the Lacaze-Duthiers canyon and further highlights the importance of small-scale sampling for an accurate vision of deep-sea communities. |
| first_indexed | 2024-03-09T06:23:41Z |
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| id | doaj.art-3e0b5168265e439dad1652ce44e018b1 |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:23:41Z |
| publishDate | 2018-07-01 |
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| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-3e0b5168265e439dad1652ce44e018b12023-12-03T11:29:55ZengPeerJ Inc.PeerJ2167-83592018-07-016e539610.7717/peerj.5396Co-occurring nematodes and bacteria in submarine canyon sedimentsJadwiga Rzeznik-Orignac0Antoine Puisay1Evelyne Derelle2Erwan Peru3Nadine Le Bris4Pierre E. Galand5Laboratoire d’Ecogéochimie des Environnements Benthiques, LECOB, Sorbonne Université, CNRS, Banyuls-sur-Mer, FranceLaboratoire d’Ecogéochimie des Environnements Benthiques, LECOB, Sorbonne Université, CNRS, Banyuls-sur-Mer, FranceLaboratoire de Biologie Intégrative des Organismes Marins, Sorbonne Université, CNRS, Banyuls-sur-Mer, FranceLaboratoire d’Ecogéochimie des Environnements Benthiques, LECOB, Sorbonne Université, CNRS, Banyuls-sur-Mer, FranceLaboratoire d’Ecogéochimie des Environnements Benthiques, LECOB, Sorbonne Université, CNRS, Banyuls-sur-Mer, FranceLaboratoire d’Ecogéochimie des Environnements Benthiques, LECOB, Sorbonne Université, CNRS, Banyuls-sur-Mer, FranceIn submarine canyon sediments, bacteria and nematodes dominate the benthic biomass and play a key role in nutrient cycling and energy transfer. The diversity of these communities remains, however, poorly studied. This work aims at describing the composition of bacteria and nematode communities in the Lacaze-Duthiers submarine canyon in the north-western Mediterranean Sea. We targeted three sediment depths for two consecutive years and investigated the communities using nuclear markers (18S rRNA and 16S rRNA genes). High throughput sequencing combined to maximal information coefficient (MIC) statistical analysis allowed us to identify, for the first time, at the same small scale, the community structures and the co-occurrence of nematodes and bacteria Operational Taxonomic Units across the sediment cores. The associations detected by MIC revealed marked patterns of co-occurrences between the bacteria and nematodes in the sediment of the canyon and could be linked to the ecological requirements of individual bacteria and nematodes. For the bacterial community, Delta- and Gammaproteobacteria sequences were the most abundant, as seen in some canyons earlier, although Acidobacteria, Actinobacteria and Planctomycetes have been prevalent in other canyon sediments. The 20 identified nematode genera included bacteria feeders as Terschellingia, Eubostrichus, Geomonhystera, Desmoscolex and Leptolaimus. The present study provides new data on the diversity of bacterial and nematodes communities in the Lacaze-Duthiers canyon and further highlights the importance of small-scale sampling for an accurate vision of deep-sea communities.https://peerj.com/articles/5396.pdfBacteriaMeiofaunaCanyon Lacaze-DuthiersMetabarcordingMolecular approachMediterranean Sea |
| spellingShingle | Jadwiga Rzeznik-Orignac Antoine Puisay Evelyne Derelle Erwan Peru Nadine Le Bris Pierre E. Galand Co-occurring nematodes and bacteria in submarine canyon sediments PeerJ Bacteria Meiofauna Canyon Lacaze-Duthiers Metabarcording Molecular approach Mediterranean Sea |
| title | Co-occurring nematodes and bacteria in submarine canyon sediments |
| title_full | Co-occurring nematodes and bacteria in submarine canyon sediments |
| title_fullStr | Co-occurring nematodes and bacteria in submarine canyon sediments |
| title_full_unstemmed | Co-occurring nematodes and bacteria in submarine canyon sediments |
| title_short | Co-occurring nematodes and bacteria in submarine canyon sediments |
| title_sort | co occurring nematodes and bacteria in submarine canyon sediments |
| topic | Bacteria Meiofauna Canyon Lacaze-Duthiers Metabarcording Molecular approach Mediterranean Sea |
| url | https://peerj.com/articles/5396.pdf |
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