Browsing Biología by Title
Now showing items 462-481 of 871
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Habituation and spatial memory in the context of emotional regulation: Behavioral and genetic mechanisms underlying context information-processing and de-arousal grooming
(2017)Habituation is the ability to passively reduce a response after repeated or prolonged exposures to a particular stimulus. From a cognitive perspective, habituation is a basic, information-gating process that contributes ... -
Hagfishes of Mexico and Central America: Annotated catalog and identification key
(2016)This catalogue contains revised and updated taxonomic and distributional information about hagfishes of Mexico and Central America (Pacific and Caribbean coasts). It includes all nominal species of the family Myxinidae ... -
Hairy kisses: tactile cheliceral courtship affects female mating decisions in Leucauge mariana (Araneae, Tetragnathidae)
(2015)Sexual selection is thought to be an important force driving the evolution of sexually dimorphic morphology and behavior, but direct experimental tests of the functions of species-specific details of morphology are rare ... -
Hallazgos fenotípicos por imágenes con Tomografía Dental Volumétrica (TDV) en amelogénesis imperfecta
(2016)Amelogénesis imperfecta (AI) se describe como un conjunto de defectos mendelianos en la biomineralización del esmalte dental, los cuales son severos en la mayoría de los casos al presentar anormalidades tales como un grosor ... -
Helicobacter pylori Colonization Drives Urokinase Receptor (uPAR) Expression in Murine Gastric Epithelium During Early Pathogenesis
(2020)(1) Background: Persistent Helicobacter pylori infection is the most important risk factor for gastric cancer. The urokinase receptor (uPAR) is upregulated in lesions harboring cancer invasion and inflammation. Circumstantial ... -
Hemidactylus frenatus (Common House Gecko). Diet
(2017)Hemidactylus frenatus is an invasive species in the Americas that has succeeded in establishing populations in Costa Rica (Savage 2002. The Amphibians and Reptiles of Costa Rica: A Herpetofauna between Two Continents, ... -
La herencia: Jornada de estudio (ARPAMEC)
(1981-03-05)El documento contiene el material utilizado en una jornada de estudio de la Asociación Regional para el Mejoramiento de la Enseñanza de las Ciencias (ARPAMEC), que se realizó en el transcurso del primer semestre del año ... -
Hidrocarburos cuticulares: su potencial como estímulo para el reconocimiento de parentela en dos arañas subsociales anelosimus (Araneae: Theridiidae) y patrones de fijación de hilos de seda en la araña subsocial Anelosimus baeza (Araneae: Theridiidae)
(2019-09-27)El reconocimiento de parentela en grupos sociales de artrópodos puede ocurrir por diferentes tipos de estímulos, como por ejemplo los compuestos excretados de la cutícula. Un rasgo posiblemente ancestral de las arañas ... -
Highly diverse fungal communities in carbon-rich aquifers of two contrasting lakes in Northeast Germany
(2019-10)Fungi are an important component of microbial communities and are well known for their ability to decompose refractory, highly polymeric organic matter. In soils and aquatic systems, fungi play an important role in carbon ... -
Historia natural y repertorio acústico del Sancuinclas (Pezopetes capitalis), ave endémica de Costa Rica y el oeste de Panamá
(2014)El Sancuinclas es una especie endémica y un habi- tante común del sotobosque de bosques montanos y páramo en las tierras altas de Costa Rica y el oeste de Panamá. A pesar de ser una especie común, existía poca información ... -
Un híbrido espontáneo entre Aristolochia gorgona y A. grandiflora (Aristolochiaceae)
(2005)A spontaneous hybrid between Aristolochia gorgona and A. grandiflora appeared at Lankester Botanical Garden, Costa Rica, where plants of both species were cultivated in close proximity. This indicates that geographic ... -
Homoplasious colony morphology and mito-nuclear phylogenetic discordance among Eastern Pacific octocorals
(2016)Octocorals are a diverse and ecologically important group of cnidarians. However, the phylogenetic relationships of many octocoral groups are not well understood and are based mostly on mitochondrial sequence data. In ... -
Hydrogen production by immobilized Synechocystis sp. PCC 6803
(2016)The ability of the immobilized Synechocystis sp. PCC 6803 cells to produce hydrogen via an indirect light driven process was investigated. Cells were successfully immobilized in a calcium alginate gel matrix. Beads were ... -
ICSEM10 Slideshow
(2020-03-03)This is a slideshow produced for the 10th International Congress on the Systematics and Ecology of Myxomycetes, held in the city of Turrialba (UCR, Sede del Atlántico) in February 2020. -
Identificación de genes y proteínas relacionados con la producción de nanopartículas de selenio en Pseudomonas putida KT2440
(2019)Existen múltiples bacterias que pueden metabolizar selenito a selenio, no obstante, en muchos casos no se conocen bien los mecanismos mediante los cuales estos microorganismos llevan a cabo este proceso, siendo Pseudomonas ...