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	Provedor de dados RChHN (4) Biol. Res. (1) Gayana (1) Autor MÉNDEZ,MARCO A (6) CORREA,CLAUDIO (2) PALMA,R. EDUARDO (2) ARAYA,SERGIO (1) CAMBIAZO,VERÓNICA (1) COLLADO,GONZALO A (1) DINIZ-FILHO,JOSÉ A. F (1) GALLARDO,CAROLINA E (1) GONZÁLEZ,MAURICIO (1) GUERRERO,CLAUDIA J (1) HERNÁNDEZ,HÉCTOR J (1) ITURRA,PATRICIA (1) LEIVA,ANDREA (1) LOBOS,GABRIEL (1) POULIN,ELIE (1) REYES,ANGÉLICA (1) VELOSO,ALBERTO (1) VILA,IRMA (1) Mais... Palavra-chave AFLP markers (1) Altiplano (1) Amphibian (1) Calyptocephalellini (1) Chile (1) Control region (1) Cop operon (1) CopY binding site (1) Copper homeostasis (1) Enterococcus hirae (1) Hybridization (1) Lactobacillale order (1) Landscape genetics (1) Least cost models (1) MtDNA (1) Phylogenetic reconstruction (1) Rhinodermatidae (1) Ribosomal mitochondrial genes (1) Telmatobiinae (1) Toads (1) Mais... Tipo do documento Journal article (6) Ano 2015 (1) 2013 (1) 2012 (1) 2011 (1) 2006 (2) País Chile (6) Idioma Inglês (4) Espanhol (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 6 Primeira ... 1 ... Última Cop-like operon: Structure and organization in species of the Lactobacillale order Biol. Res. REYES,ANGÉLICA; LEIVA,ANDREA; CAMBIAZO,VERÓNICA; MÉNDEZ,MARCO A; GONZÁLEZ,MAURICIO. Copper is an essential and toxic trace metal for bacteria and, therefore, must be tightly regulated in the cell. Enterococcus hirae is a broadly studied model for copper homeostasis. The intracellular copper levels in E. hirae are regulated by the cop operon, which is formed by four genes: copA and copB that encode ATPases for influx and efflux of copper, respectively; copZ that encodes a copper chaperone; and copY, a copper responsive repressor. Since the complete genome sequence for E. hirae is not available, it is possible that other genes may encode proteins involved in copper homeostasis. Here, we identified a cop-like operon in nine species of Lactobacillale order with a known genome sequence. All of them always encoded a CopY-like repressor and a... Tipo: Journal article Palavras-chave: Cop operon; CopY binding site; Copper homeostasis; Enterococcus hirae; Lactobacillale order. Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000100010 Caracterización trófica de Orestias (Teleostei: Cyprinodontidae) en el Parque Nacional Lauca Gayana GUERRERO,CLAUDIA J; POULIN,ELIE; MÉNDEZ,MARCO A; VILA,IRMA. Los peces muestran una amplia diversidad de comportamientos alimentarios, algunas veces asociados con morfologías específicas, las cuales pueden reflejar adaptaciones para usar los recursos dependiendo de su hábitat. En los sistemas acuáticos aislados, los peces son un buen modelo de estudio para entender las relaciones tróficas. Este estudió evaluó la dieta de cinco especies de Orestias, las cuales habitan ocho sitios diferentes en la Región de Arica y Parinacota, Parque Nacional Lauca. Se analizaron 177 estómagos pertenecientes a las especies Orestias chungarensis, O. laucaensis, O. parinacotensis, O. piacotensis y Orestias cf agassii. Para los análisis se utilizaron descriptores cuantitativos de número de items presa y frecuencia de ocurrencia. Se... Tipo: Journal article Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382015000100004 A hybrid zone of two toad sister species, Rhinella atacamensis and R. arunco (Anura: Bufonidae), defined by a consistent altitudinal segregation in watersheds RChHN CORREA,CLAUDIO; MÉNDEZ,MARCO A; ARAYA,SERGIO; LOBOS,GABRIEL; PALMA,R. EDUARDO. Delimiting the spatial extension of a hybrid zone is essential to understand its historical origin and to identify the geographical and/or environmental factors which delimit it. Rhinella atacamensis and R. arunco are two sister species which together inhabit Chile between 25° and 38° S. Their distribution limits coincide at about 32° S, where recently it was reported that they hybridize in a small watershed (Pupío creek). Although the genetic evidence suggests that these two species form a hybrid swarm, they are not mixed homogeneously in the entire watershed, but rather are spatially segregated: R. arunco is found in the lower part of the creek and R. atacamensis in the higher part. An extensive exploration north and south of 32° S revealed other... Tipo: Journal article Palavras-chave: AFLP markers; Chile; Control region; Hybridization; Toads. Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200001 Relationship between the genetic structure of the Andean toad Rhinella spinulosa (Anura: Bufonidae) and the northern Chile landscape (21°- 24° S) RChHN GALLARDO,CAROLINA E; HERNÁNDEZ,HÉCTOR J; DINIZ-FILHO,JOSÉ A. F; PALMA,R. EDUARDO; MÉNDEZ,MARCO A. We analyzed the relationship of landscape and environmental features on the genetic differentiation of Rhinella spinulosa (Wiegmann, 1834) in the Altiplano of Antofagasta (Chile). We performed three types of analyses at different spatial scales: (1) Considering all populations; (2) Grouping populations by watershed and by sub-watershed; and (3) Using the results of a spatial analysis of molecular variation (SAMOVA). Landscape features were incorporated using Geographic Information Systems, with three hypothetical dispersal models: (1) Euclidean distance (null model); (2) Least cost based on wetland locations; and (3) Least cost based on least slopes. We also included differences in temperature, precipitation and altitude among localities. The Akaike... Tipo: Journal article Palavras-chave: Altiplano; Amphibian; Landscape genetics; Least cost models; MtDNA. Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000300007 Phylogenetic relationships of Chilean leptodactylids: a molecular approach based on mitochondrial genes 12S and 16S RChHN CORREA,CLAUDIO; VELOSO,ALBERTO; ITURRA,PATRICIA; MÉNDEZ,MARCO A. Most Chilean amphibians belong to the subfamily Telmatobiinae (Anura, Leptodactylidae). Several phylogenetic studies of Leptodactylidae and Telmatobiinae, based principally on morphological characters, have implicitly suggested closer relationships of some species of the Telmatobiinae with members of other subfamilies of leptodactylids, including the leptodactyline genus Pleurodema which is present in Chile. Furthermore, a growing number of molecular studies suggest a non monophyletic status for Telmatobiinae, although none of these studies have investigated the phylogenetic relationships of this subfamily. We compared partial sequences of the ribosomal mitochondrial genes 12S and 16S to determine the phylogenetic relationships of Chilean leptodactylids... Tipo: Journal article Palavras-chave: Telmatobiinae; Calyptocephalellini; Rhinodermatidae; Ribosomal mitochondrial genes; Phylogenetic reconstruction. Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000400003 Los taxa nominales de moluscos descritos por Courty del Salar de Ascotán, Altiplano chileno RChHN COLLADO,GONZALO A; MÉNDEZ,MARCO A. Tipo: Journal article Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000200010 Registros recuperados: 6 Primeira ... 1 ... Última

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