FN Archimer Export Format PT J TI Microbial diversity associated with the hydrothermal shrimp Rimicaris exoculata gut and occurrence of a resident microbial community BT AF DURAND, Lucile ZBINDEN, Magali CUEFF-GAUCHARD, Valerie DUPERRON, Sebastien ROUSSEL, Erwan SHILLITO, Bruce CAMBON-BONAVITA, Marie-Anne AS 1:1;2:2;3:1;4:2;5:1;6:2;7:1; FF 1:PDG-DOP-DCB-EEP-LMEE;2:;3:PDG-DOP-DCB-EEP-LMEE;4:;5:PDG-DOP-DCB-EEP-LMEE;6:;7:PDG-DOP-DCB-EEP-LMEE; C1 IFREMER, Ctr Brest, Lab Microbiol Environm Extremes, DEEP LM2E,UMR 6197, F-29280 Plouzane, France. Univ Paris 06, CNRS, UMR 7138, Paris, France. C2 IFREMER, FRANCE UNIV PARIS 06, FRANCE SI BREST SE PDG-DOP-DCB-EEP-LMEE IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 3.456 TC 63 TU Centre national de la recherche scientifique Institut de recherche pour le développement Institut français de recherche pour l'exploitation de la mer Muséum national d'histoire naturelle Université Nice - Sophia-Antipolis Université Pierre et Marie Curie Université de Bretagne Occidentale Université des Antilles UR https://archimer.ifremer.fr/doc/00000/11142/7919.pdf LA English DT Article CR EXOMAR MOMAR2008-LEG2 MOMARDREAM-NAUT1-NAUT2 BO Unknown L'Atalante Pourquoi pas ? DE ;Deferribacteres;midgut epibiosis;Mollicutes;Proteobacteria;Rimicaris exoculata;starvation experiment AB Rimicaris exoculata dominates the megafauna of several Mid-Atlantic Ridge hydrothermal sites. Its gut is full of sulphides and iron-oxide particles and harbours microbial communities. Although a trophic symbiosis has been suggested, their role remains unclear. In vivo starvation experiments in pressurized vessels were performed on shrimps from Rainbow and Trans-Atlantic Geotraverse sites in order to expel the transient gut contents. Microbial communities associated with the gut of starved and reference shrimps were compared using 16S rRNA gene libraries and microscopic observations (light, transmission and scanning electron microscopy and FISH analyses). We show that the gut microbiota of shrimps from both sites included mainly Deferribacteres, Mollicutes, Epsilon- and Gammaproteobacteria. For the first time, we have observed filamentous bacteria, inserted between microvilli of gut epithelial cells. They remained after starvation periods in empty guts, suggesting the occurrence of a resident microbial community. The bacterial community composition was the same regardless of the site, except for Gammaproteobacteria retrieved only in Rainbow specimens. We observed a shift in the composition of the microbiota of long-starved specimens, from the dominance of Deferribacteres to the dominance of Gammaproteobacteria. These results reinforce the hypothesis of a symbiotic relationship between R. exoculata and its gut epibionts. PY 2010 PD FEB SO Fems Microbiology Ecology SN 0168-6496 PU Wiley-blackwell Publishing, Inc VL 71 IS 2 UT 000273065000012 BP 291 EP 303 DI 10.1111/j.1574-6941.2009.00806.x ID 11142 ER EF