Biología: Recent submissions
Now showing items 1-20 of 732
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Contribution to the knowledge of Costa Rican oribatid mite fauna, with supplementary descriptions of Pergalumna silvatica and P. sura (Acari: Oribatida: Galumnidae)
(2014-06)An annotated checklist of oribatid mites collected from Costa Rica in 2012 is provided. We have registered 10 species in 8 genera and 6 families. Archegozetes magnus, Kokoppia euramosa, Neoamerioppia cocuyana, Xenillus ... -
Desinfección de superficies contaminadas con esporas de Clostridioides difficile con disoluciones activadas electroquímicamente
(2019)Clostridioides difficile es el principal agente causal de diarrea nosocomial. Esta bacteria se diferencia bajo ciertas condiciones adversas en endosporas, las cuales son difíciles de controlar debido a su alta resistencia ... -
Muscarinic and glutamatergic regulation of self-grooming behavior and ultrasonic vocalizations in the context of open-field habituation in rats
(2019)We tested whether pharmacological impairment of OF-habituation after the administration (i.p.) of scopolamine (SCP; muscarinic antagonist) or MK-801 (MK; NMDA antagonist) was able to disrupt or alter grooming syntaxes. ... -
Evaluación de tres extractos naturales contra Bemisia tabaci en el cultivo del melón, Puntarenas, Costa Rica
(2018)El objetivo del trabajo fue evaluar el efecto de repelencia de 3 extractos naturales de plantas (tomillo, chile picante/ajo y canela/clavo de olor), para combatir la mosca blanca en el cultivo de melón, con el fin de ... -
Revisión taxonómica del género Rubus L. (Rosaceae) en Costa Rica y Panamá
(2018)En el primer capítulo se realiza una revisión taxonómica del género Rubus en Costa Rica y Panamá, para lograr una identificación más precisa, determinar el número de especies, reconocer las especies nativas e introducidas, ... -
MURCIÉLAGOS de la región del Golfo Dulce, Puntarenas, Costa Rica
(2019-11-18)La región del Golfo Dulce está compuesta de bosque estacionalmente húmedo primario y secundario. Esta guía incluye especies representativas de las familias presentes en las tierras bajas de la región (< de 400 m.s.n.m), ... -
Phylogenetic comparative methods improve the selection of characters for generic delimitations in a hyperdiverse Neotropical orchid clade
(2019)Taxonomic delimitations are challenging because of the convergent and variable nature of phenotypic traits. This is evident in species-rich lineages, where the ancestral and derived states and their gains and losses are ... -
Pollination of Habenaria tridactylites (Orchidaceae: Orchidinae) on the Canary Islands
(2019)We investigated the pollination of Habenaria tridactylites, an endemic orchid of the Canary Islands. The entirely green, widely open flowers have a long spur containing nectar. We carried out fieldwork, a molecular clock ... -
A New Species of Gorgonian Octocoral from the Mesophotic Zone off the Central Coast of California, Eastern Pacific with a Key to Related Regional Taxa (Anthozoa, Octocorallia, Alcyonacea)
(2019-05-15)Recent offshore benthic surveys utilizing Remotely Operated Vehicles in the National Marine Sanctuaries along the California coastline under the auspices of the National Oceanic and Atmospheric Administration and the Ocean ... -
A new species of the genus Psammogorgia (Cnidaria: Anthozoa: Octocorallia) from the Hannibal Bank in Pacific Panama
(2019)The octocoral faunas occurring at mesophotic depths (from 40 to 150 m) have been relatively unexplored. Recent expeditions to Hannibal Bank, a guyot seamount off Pacific Panama, have yielded new octocoral species and new ... -
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 ... -
New records of Swiftia (Cnidaria, Anthozoa, Octocorallia) from off the Pacific Costa Rican margin, including a new species from methane seeps
(2019)Exploration of the deep sea off the Pacific margin of Costa Rica has resulted in the discovery of a number of new species and reports for the region. Here, we report on the occurrence of the octocoral genus Swiftia, and ... -
Age, experience, and neurobehavioral domain: dissociable effects of environmental enrichment and social isolation on brain and behavior in adult and aged rats
(2019)In rats, environmental enrichment (EE) is a form of physical-social stimulation used for modeling the impact of optimal developmental conditions on animal’s phenotype. When implemented during early life, EE improves animal’s ... -
Age-dependent differences on neurochemistry and behavior in rats raised with low and high levels of maternal care
(2019)In laboratory rats, naturally-occurring variations in maternal care have been used to study the neurobehavioral consequences of maternal nursing and to model the early-life adversity associated with many psychiatric ... -
Análisis de Sostenibilidad de la Cadena de Valor de una Empresa Social Agroforestal en el Trópico Húmedo de América: Diseño de un Informe de Impacto Caso de estudio: Chicza, México
(2019)Desde la aparición del ser humano se han perdido la mitad de los bosques en la tierra. El trayecto actual de la humanidad está arrasando con los ecosistemas y vida silvestre en lo que se considera la sexta extinción masiva ... -
Estudio etnobotánico en Cedral y Corazón de Jesús, área de amortiguamiento de la Reserva Biológica Alberto Manuel Brenes, Costa Rica
(2018)Este estudio etnobotánico ofrece datos referentes al uso, manejo y valoración de la diversidad vegetal, en el área de amortiguamiento de la Reserva Biológica Alberto Manuel Brenes (ReBAMB). Se indagó en la percepción, ... -
The Neutrophil-Lymphocyte Ratio is an Independent Prognostic Factor for Overall Survival in Hispanic Patients with Gastric Adenocarcinoma
(2018-07-13)Introduction High values of neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) are related with poor prognosis in patients with gastric cancer. However, this association has been rarely assessed in ... -
Evaluation of pharmacological therapies used in Costa Rica in patients with metastatic gastric cancer: a retrospective study
(2019-01-18)Background: Gastric cancer is one of the leading causes of cancer death worldwide. Surgery is regarded as the best curative treatment option for gastric cancer; however, a high proportion of cases are diagnosed at advanced ... -
Evaluation of the expression of the oncogene C-ERBB-2/HER2 in gastric cancer cases from Costa Rica
(2019-09-19)Justification: The prevalence of gastric cancer (GC) with increased expression of the HER2 oncoprotein shows important variations worldwide. Incidence and mortality rates of GC in Costa Rica are among the highest in Latin ... -
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 ...