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	Provedor de dados Acta biol.Colomb. (2) Autor ARÉVALO-FERRO,Catalina (1) CADAVID,LUIS F (1) CADAVID,Luis F. (1) FRANCO,Ángel G. (1) SCHWARZ,RYAN S (1) Palavra-chave Hydractinia (2) Allorecognition (1) Celllineage competition (1) Chimera (1) Larva metamorphosis (1) Larva settlement (1) Quorum Sensing Signaling Molecules (1) Unitsofselection (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2019 (1) 2007 (1) País Colombia (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última BIOFILMS AND EXTRACTS FROM BACTERIA PRODUCING "QUORUM SENSING' SIGNALING MOLECULES PROMOTE CHEMOTAXIS AND SETTLEMENT BEHAVIORS IN Hydractinia Symbiolongicarpus (Cnidaria: Hydrozoa) LARVAE Acta biol.Colomb. FRANCO,Ángel G.; CADAVID,Luis F.; ARÉVALO-FERRO,Catalina. ABSTRACT Many sessile marine invertebrates have life cycles involving the development of larvae that settle on specific substrates to initiate metamorphosis to juvenile forms. Although is recognized that bacterial biofilms play a role in this process, the responsible chemical cues are beginning to be investigated. Here, we tested the role of substrate-specific bacteria biofilms and their Quorum Sensing Signaling Molecule (QSSM) extracts on chemotaxis and settlement of larvae from Hydractinia symbiolongicarpus, a hydroid that grows on gastropod shells occupied by hermit crabs. We isolated and taxonomically identified by 16S rDNA sequencing, 14 bacterial strains from shells having H. symbiolongicarpus. Three isolates, Shigella flexneri, Microbacterium... Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydractinia; Larva metamorphosis; Larva settlement; Quorum Sensing Signaling Molecules. Ano: 2019 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2019000100150 DYNAMICS OF SOMATIC CELLLINEAGE COMPETITION IN CHIMERAS OF Hydractinia symbiolongicarpus (CNIDARIA: HYDROZOA) Acta biol.Colomb. SCHWARZ,RYAN S; CADAVID,LUIS F. Sessile colonial invertebrates often fuse with conspecifics to form chimeras. Chimerism represents an unequivocal instance of withinindividual selection where genetically different celllineages compete for representation in the somatic and gametic pools. We analyzed temporal and spatial variations in somatic celllineage composition of laboratoryestablished chimeras of the hydroid Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa). Using three clones with different allotypic specificities (i.e., two rejecting one another but fusing with a third one), we established two classes of twoway chimeras, a single threeway chimera class, and an incompatible interaction as control. Chimeras were sampled at five time intervals for a year. Celllineages in samples were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Allorecognition; Hydractinia; Unitsofselection; Celllineage competition; Chimera. Ano: 2007 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2007000300002 Registros recuperados: 2 Primeira ... 1 ... Última

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