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Authordc.contributor.authorSchwob, Guillaume 
Authordc.contributor.authorCabrol, Lea 
Authordc.contributor.authorPoulin, Elie 
Authordc.contributor.authorOrlando, Julieta 
Cita de ítemdc.identifier.citationFront. Microbiol. February 2020 | Volume 11 | Article 308es_ES
Abstractdc.description.abstractAbatus agassizii is an irregular sea urchin species that inhabits shallow waters of South Georgia and South Shetlands Islands. As a deposit-feeder, A. agassizii nutrition relies on the ingestion of the surrounding sediment in which it lives barely burrowed. Despite the low complexity of its feeding habit, it harbors a long and twice-looped digestive tract suggesting that it may host a complex bacterial community. Here, we characterized the gut microbiota of specimens from two A. agassizii populations at the south of the King George Island in the West Antarctic Peninsula. Using a metabarcoding approach targeting the 16S rRNA gene, we characterized the Abatus microbiota composition and putative functional capacity, evaluating its differentiation among the gut content and the gut tissue in comparison with the external sediment. Additionally, we aimed to define a core gut microbiota between A. agassizii populations to identify potential keystone bacterial taxa. Our results show that the diversity and the composition of the microbiota, at both genetic and predicted functional levels, were mostly driven by the sample type, and to a lesser extent by the population location. Specific bacterial taxa, belonging mostly to Planctomycetacia and Spirochaetia, were differently enriched in the gut content and the gut tissue, respectively. Predictive functional profiles revealed higher abundance of specific pathways, as the sulfur cycle in the gut content and the amino acid metabolism, in the gut tissue. Further, the definition of a core microbiota allowed to obtain evidence of specific localization of bacterial taxa and the identification of potential keystone taxa assigned to the Desulfobacula and Spirochaeta genera as potentially host selected. The ecological relevance of these keystone taxa in the host metabolism is discussed.es_ES
Patrocinadordc.description.sponsorshipComision Nacional de Investigacion Cientifica y Tecnologica (CONICYT): PIA ACT 172065, ECOS SUD-CONICYT C16B03, INACH-RT09-12.es_ES
Publisherdc.publisherFrontiers Mediaes_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Sourcedc.sourceFrontiers in Microbiologyes_ES
Keywordsdc.subjectHeart sea urchines_ES
Keywordsdc.subjectAbatus agassiziies_ES
Keywordsdc.subjectGut microbiotaes_ES
Keywordsdc.subjectWest Antarctic Peninsulaes_ES
Títulodc.titleCharacterization of the Gut microbiota of the Antarctic Heart Urchin (Spatangoida) Abatus agassiziies_ES
Document typedc.typeArtículo de revistaes_ES
dcterms.accessRightsdcterms.accessRightsAcceso Abierto
Indexationuchile.indexArtículo de publicación ISI
Indexationuchile.indexArtículo de publicación SCOPUS

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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile