Browsing Biología by Title
Now showing items 709-728 of 1582
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Gastric cancer in the era of immune checkpoint blockade
(2019-09-24)Gastric cancer (GC) is one of the most important malignancies worldwide because of its high incidence and mortality. The very low survival rates are mainly related to late diagnosis and limited treatment options. GC is the ... -
Gelatinous fibers and variant secondary growth related to stem undulation and contraction in a monkey ladder vine, Bauhinia glabra (Fabaceae)
(2014)Premise of the study: Some of the most striking stem shapes occur in species of Bauhinia (Fabaceae) known as monkey ladder vines. Their mature stems are flattened and develop regular undulations. Although stems have variant ... -
La genealogía de doña Isabel Jiménez. Una aproximación a la primera fase del mestizaje en Costa Rica
(Orígenes. Revista de la Asociación de Genealogía e Historia de Costa Rica, 1(1), 271-284, 2012)The genealogy of doña Isabel Jiménez is a evidence of Spanish-Amerindian admixture since the early Spanish Colony in Costa Rica. The observed a DNA lineage wich has an Amerindian ancestry in a a deep matrilineal genealogy. ... -
Genera Pleurothallidinarum: An updated phylogenetic overview of Pleurothallidinae
(2016-08-30)Subtribe Pleurothallidinae with just over 5000 species is possibly the most species-rich of all orchids. It has been growing steadily for more than two centuries, but the last three decades have been especially active in ... -
Genera Pleurothallidinarum: the era of Carlyle Luer
(2017)The era or Carlyle Luer, which currently comprehends the forty-two years since the publication of the first Icones Pleurothallidinarum in 1975, has witnessed a true revolution in the knowledge and understanding of the ... -
Generation of myxomycete data from three discrete experiments using moist chamber cultures in a Neotropical forest
(2021-11-23)The moist chamber technique is widely used in ecological research on myxomycetes. However, limited assessments on the usefulness of the technique have been carried out using empirical data. In the present study, three ... -
Generic recircumscriptions of Oncidiinae (Orchidaceae: Cymbidieae) based on maximum likelihood analysis of combined DNA datasets
(2012)Phylogenetic relationships within the orchid subtribe Oncidiinae sensu Chase were inferred using maximum likelihood analyses of single and multilocus DNA sequence data sets. Analyses included both nuclear ribosomal internal ... -
Genetic analysis of the dry forest timber tree Sideroxylon capiri in Costa Rica using AFLP
(2015-01)Sideroxylon capiri (“Tempisque”) is a threatened and economically important timber species in the dry forest of Costa Rica. To assess the extent of the genetic diversity between and within populations of this species, 86 ... -
Genetic And Morphological Variation Of The Sooty-capped Bush Tanager (Chlorospingus Pileatus), A Highland Endemic Species From Costa Rica And Western Panama
(2010)We examined the effect of geographic isolation on morphology, genetic structure, and abundance of the Sooty-capped Bush Tanager (Chlorospingus pileatus), an endemic species restricted to highlands of Costa Rica and western ... -
Genetic contributions to circadian activity rhythm and sleep pattern phenotypes in pedigrees segregating for severe bipolar disorder
(2016-02-09)Abnormalities in sleep and circadian rhythms are central features of bipolar disorder (BP), often persisting between episodes. We report here, to our knowledge, the first systematic analysis of circadian rhythm activity ... -
Genetic diversity analysis of jatropha species from Costa Rica using AFLP markers
(2015)The genetic diversity from species of the genus Jatropha collected from Costa Rica was analyzed by AFLP (amplified fragments length polymorphism). The study consisted of 114 accessions from 15 populations of 4 different ... -
Genetic diversity and reproductive biology of the dioecious and epiphytic bromeliad Aechmea mariae-reginae (Bromeliaceae) in Costa Rica: implications for its conservation
(2019)Ecological traits and pollination mode associated with dioecious sexual expression in plants are likely to influence their reproductive success and levels of genetic diversity. Dioecy is an uncommon condition in Bromeliaceae. ... -
Genetic Diversity and Spatial Genetic Structure of an Epiphytic Bromeliad in Costa Rican Montane Secondary Forest Patches
(2014)Information on genetic variation and its distribution in tropical plant populations relies mainly on studies of ground‐rooted species, while genetic information of epiphytic plants is still limited. Particularly, the effect ... -
Genetic diversity in Oryza glumaepatula wild rice populations in Costa Rica and possible gene flow from O. sativa
(2016-04-07)Wild crop relatives are an important source of genetic diversity for crop improvement. Diversity estimates are generally lacking for many wild crop relatives. The objective of the present study was to analyze how genetic ... -
Genetic diversity in the endangered tropical tree, Guaiacum sanctum (Zygophyllaceae)
(2010)Fragmentation of tropical forests has changed continuous tropical landscapes into a network of poorly connected fragments, reducing population sizes and potentially increasing genetic isolation. This study quantifies genetic ... -
Genetic structure in neotropical birds with different tolerance to urbanization
(2022)Gene flow in birds can be affected by urbanization depending on natural history traits and adaptability to habitat change. Contrasting results can be expected when comparing species with opposite resilience to urbanization. ... -
Genetic structure in two avian species with different tolerance to urbanization: Case of white-eared ground-sparrow and house wren across an urban gradient
(2022)El flujo génico en aves puede verse afectado por la urbanización dependiendo de la historia natural y adaptabilidad de la especie al cambio de hábitat. Se pueden esperar resultados contrastantes cuando se comparan ... -
Genética y ecología de la regeneración de robledables fragmentados en Costa Rica: efecto de mamíferos pequeños en la disperción de semillas y el establecimiento de plántulas.
(2011-08-09)Este proyecto estudió el papel de los mamíferos pequeños (especialmente roedores) en la dinámica de la regeneración de los bosques de roble en las zonas altas de Costa Rica, específicamente en el Cerro de la Muerte. Los ... -
Genome Sequencing of Sulfolobus sp. A20 from Costa Rica and Comparative Analyses of the Putative Pathways of Carbon, Nitrogen, and Sulfur Metabolism in Various Sulfolobus Strains
(2016-11-30)The genome of Sulfolobus sp. A20 isolated from a hot spring in Costa Rica was sequenced. This circular genome of the strain is 2,688,317 bp in size and 34.8% in G+C content, and contains 2591 open reading frames (ORFs). ...