Data/hora: 09/06/2024 13:32:57

Provedor de dados: 	5	
País: 	France	
Título: 	Biogeographical distribution of Rimicaris exoculata resident gut epibiont communities along the Mid-Atlantic Ridge hydrothermal vent sites	
Autores: 	Durand, Lucile; Roumagnac, Marie; Cueff-gauchard, Valerie; Jan, Cyrielle; Guri, Mathieu; Tessier, Claire; Haond, Marine; Crassous, Philippe; Zbinden, Magali; Arnaud-haond, Sophie; Cambon-bonavita, Marie-anne.	
Data: 	2015-10	
Ano: 	2015	
Palavras-chave: 	Epibiont; Extreme environments; Network analyses; Phylogeography.	
Resumo: 	Rimicaris exoculata is a deep-sea hydrothermal vent shrimp which enlarged gill chamber houses a complex trophic epibiotic community. Its gut harbours an autochthonous and distinct microbial community. This species dominates hydrothermal ecosystems megafauna along the Mid-Atlantic Ridge, regardless of contrasted geochemical conditions prevailing in them. Here, the resident gut epibiont community at four contrasted hydrothermal vent sites (Rainbow/TAG/Logatchev/Ashadze) was analysed and compiled with previous data to evaluate the possible influence of site location, using 16S rRNA surveys and microscopic observations (TEM, SEM and FISH analyses). Filamentous epibionts inserted between the epithelial cells microvilli were observed on all examined samples. Results confirmed resident gut community affiliation to Deferribacteres, Mollicutes, Epsilonproteobacteria and to a lesser extent Gammaproteobacteria lineages. Still a single Deferribacteres phylotype was retrieved at all sites. Four Mollicutes-related OTUs were distinguished, one being only identified on Rainbow specimens. The topology of ribotypes median-joining networks illustrated a community diversification possibly following demographic expansions, suggesting a more ancient evolutionary history and/or a larger effective population size at Rainbow. Finally, the gill chamber community distribution was also analysed through ribotypes networks based on sequences from R. exoculata collected at Rainbow/Snake Pit/TAG/Logatchev/Ashadze sites. Results allow refining hypotheses on the epibiont role and transmission pathways.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00288/39890/38443.pdf

DOI:10.1093/femsec/fiv101

http://archimer.ifremer.fr/doc/00288/39890/	
Editor: 	Oxford Univ Press	
Formato: 	application/pdf	
Fonte: 	Fems Microbiology Ecology (0168-6496) (Oxford Univ Press), 2015-10 , Vol. 91 , N. 10 , P. 1-15	
Fonte: 	FEMS 2015. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com 1

info:eu-repo/semantics/openAccess

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