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	Provedor de dados ArchiMer (4) Repositório Alice (1) Autor Arancio, Marc (1) BORGES, W. L. (1) COSTA JÚNIOR, J. de S. (1) Hernandez Avila, Ivan (1) Jan, Cyrielle (1) Le Bloa, Simon (1) MARTINS, C. M. (1) RUMJANEK, N. G. (1) Mais... Palavra-chave Symbiose (5) Rimicaris exoculata (2) Symbiosis (2) Amoebophrya (1) Anatomia vegetal (1) Antimicrobial peptide (1) Biological nitrogen fixation (1) Crevettes Alvinocarididae (1) Cycle de vie (1) Cycles biologiques -- Modèles mathématiques (1) Deep-water hydrothermal vents (1) Dinoflagellés -- Mouvements (1) Dinoflagellés -- Parasites (1) Dispersal (1) Epibiontes (1) Epibionts (1) Fixação simbiótica de nitrogênio (1) Genetic marker (1) Hydrothermal vent (1) Legume (1) Mais... Tipo do documento Text (4) Artigo de periódico (1) Ano 2016 (2) 2015 (1) 2014 (1) 2012 (1) País France (4) Brazil (1) Idioma Francês (4) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Approche métagénomique de la chimiosynthèse en système hydrothermal océanique profond : cas particulier des symbioses bactériennes associées à la crevette Rimicaris exoculata ArchiMer Jan, Cyrielle. The hydrothermal shrimp Rimicaris exoculata is an endemic species of the Mid-Atlantic Ridge (MAR).This species lives in dense aggregates on the walls of active chimneys and dominates the megafauna of most of these sites. This shrimp has two distinct microbial communities whose roles remain almost unknown. One of these communities is associated with the cephalothorax and hypertrophied mouthparts.These are covered by a dense community of bacteria affiliated to chemoautotrophic epibionts associated with mineral deposits. To deepen our knowledge on the symbiotic community in the context of the thesis, a metagenomic approach was undertaken. This helped highlighting the microbial diversity present with a dominant phylum, the Proteobacteria. Two classes are... Tipo: Text Palavras-chave: Epibiontes; Métagénomique; Rimicaris exoculata; Symbiose; Zetaproteobacteria; Symbiosis; Epibionts; Metagenomic. Ano: 2012 URL: https://archimer.ifremer.fr/doc/00498/60954/64357.pdf Dispersion larvaire et cycle de vie dans les environnements hydrothermaux profonds : le cas de Rimicaris exoculata et d'espèces proches ArchiMer Hernandez Avila, Ivan. Deep-water hydrothermal vent host high-biomass communities based on chemoautotrophy supported by the metabolic activity of free-living and symbiotic bacteria associated to invertebrates, especially megafauna. Knowledge on the mechanisms of dispersal and the life cycle of vent species is essential to our understanding of the vent communities in terms of distribution, structure and temporal variation. In this study, I present some advances regarding the dispersal and life cycle of a dominant species of the Mid-Atlantic Ridge (MAR) vent ecosystems, the alvinocaridid shrimp Rimicaris exoculata, and other related species. The methodological approaches applied include morphological descriptions of larvae, analysis of population biology and reproduction, and... Tipo: Text Palavras-chave: Sources hydrothermales profondes; Cycle de vie; Structure de population; Symbiose; Crevettes Alvinocarididae; Deep-water hydrothermal vents; Life cycle; Population structure; Reproduction; Dispersal; Symbiosis; Speciation. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00498/60927/64321.pdf Etude théorique des interactions entre des dinoflagellés et des parasitoïdes eucaryotes en environnement mélangé : persistance du système et succession phytoplanctonique ArchiMer Arancio, Marc. Many species of autotrophic dinoflagellates can be parasitized by multiple eukaryotic parasitoids. These parasitoids have a specific life cycle resulting in the death of the host and the release of hundreds of zoospores that can infect a new host. Several studies have demonstrated their potential to control the host population in a few days as well as their great diversity and suggests a very complex dynamics of infection in this kind of environment. The objective of this thesis is to understand the parasitoid-dinoflagellates infection dynamics in a highly mixed estuary and a better understanding of the different interactions taking place within this system. To address this problem, we used the modeling approach (IBM). This approach has enabled to show... Tipo: Text Palavras-chave: Amoebophrya; Parvilucifera; Relations hôte-parasite; Dinoflagellés -- Parasites; Dinoflagellés -- Mouvements; Symbiose; Succession écologique; Cycles biologiques -- Modèles mathématiques; Écologie des estuaires; Phytoplancton. Ano: 2014 URL: https://archimer.ifremer.fr/doc/00498/60942/64335.pdf Mode de reconnaissance hôte symbionte en milieux extrêmes : cas du modèle symbiotique Rimicaris exoculata ArchiMer Le Bloa, Simon. Deprived of light, the deep-sea hydrothermal vents are extremes ecosystems sustained by micobial chemosynthesis. These environments are colonized by animal species living in close relationships with these chemoautotrophic micro-organisms, eating them or establishing long term interactions with them, may they be trophic or not only. The shrimp Rimicaris exoculata is an endemic hydrothermal species of the Mid-Atlantic Ridge (MAR) sites. This crustacean represents the predominant macrofauna of some sites of the MAR. It lives in symbiotic association with two distinct microbial communities qualified as ectosymbiosis. One is located in its gill chamber and one in its gut. First, this work focused on the study of bacterial communication (Quorum Sensing or QS)... Tipo: Text Palavras-chave: Écosystèmes hydrothermaux; Peptide antimicrobien; Marqueurs génétiques; Hydrothermal vent; Rimicaris exoculata; Symbiose; Quorum Sensing; Antimicrobial peptide; Genetic marker. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00498/60918/64279.pdf Rhizobial diversity from stem and root nodules of Discolobiumand Aeschynomene. Repositório Alice MARTINS, C. M.; BORGES, W. L.; COSTA JÚNIOR, J. de S.; RUMJANEK, N. G.. Among the genera that exhibit stem nodulation, Aeschynomeneand Discolobiumare found in the Pantanal Mato-grossense (wetlands in the state ofMato Grosso, Brazil). Isolates obtained from the stem and root nodules of D. pulchellum, D. psoraleaefolium, D. leptophyllumand A. fluminensiswere collected from various locations in the Pantanal de Poconésub-region and phenotypically characterized and genotyped by restriction analysis of the 16S rDNA gene. Of the 282 isolates obtained from the stem and root nodules, 84.3% alkalized YMA media and 74.1% showed slow growth. No differences in either the phenotype or the genotype among the rhizobial populations isolated from the root or stem nodules of the species Discolobiumand A. fluminensis were observed. Among the... Tipo: Artigo de periódico Palavras-chave: Symbiose; Biological nitrogen fixation; Vegetable.; Anatomia vegetal; Nodulação; Simbiose; Fixação simbiótica de nitrogênio; Legume; Plant anatomy.; Nodulation. Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1015336 Registros recuperados: 5 Primeira ... 1 ... Última

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