Listar Biología por título
Mostrando ítems 82-101 de 1615
-
Aceites esenciales, fenología e interacciones bióticas de la planta invasora Crassocephalum crepidioides (Asteraceae) en Costa Rica
(2022-12)Crassocephalum crepidioides (Asteraceae) es una especie herbácea con notables usos etnobotánicos en África y otras áreas, que se extendió como invasora en varias regiones tropicales y subtropicales del mundo. Objetivo: ... -
Acoustic courtship songs in males of the fruit fly Anastrepha ludens (Diptera: Tephritidae) associated with geography, mass rearing and courtship success
(Rev. Biol. Trop. 57 (Suppl. 1): 257-265. Epub 2009 November 30., 2009-11-30)The Sterile Insect Technique (SIT) has been used successfully to control or eradicate fruit flies. The commonly observed inferiority of mass-reared males, compared with wild males, when they are paired with wild females, ... -
Actinoramide A Identified as a Potent Antimalarial from Titration-Based Screening of Marine Natural Product Extracts
(2015)Methods to identify the bioactive diversity within natural product extracts (NPEs) continue to evolve. NPEs constitute complex mixtures of chemical substances varying in structure, composition, and abundance. NPEs can ... -
Acuarelas de orquídeas: Arte y ciencia de Rafael Lucas Rodríguez en la Universidad de Costa Rica
(2023-04-07)En 2001 tuve acceso a las acuarelas de Rafael Lucas Rodríguez Caballero, custodiadas en una sala con aire acondicionado de la Biblioteca Luis Demetrio Tinoco de la Universidad de Costa Rica (UCR). Manualmente copié la ... -
Acute stress differentially affects grooming subtypes and ultrasonic vocalisations in the open-field and home-cage test in rats
(2020-06)Grooming behaviour in rodents has been associated with emotional distress, especially in unfamiliar and aversive contexts. However, the biological function of grooming in such situations is still unclear. We hypothesised ... -
Adaptation of biomixtures for carbofuran degradation in on-farm biopurification systems in tropical regions
(2015-07)A biomixture constitutes the active core of the on-farm biopurification systems, employed for the detoxification of pesticide-containing wastewaters. As biomixtures should be prepared considering the available local ... -
Additions to the Costa Rican Myoxanthus (Orchidaceae: Pleurothallidinae)
(2017)Pleurothallis cerea, a species described based on a specimen collected by Lankester in Costa Rica, and commonly placed under the synonymy of Myoxanthus octomeriae or M. congestus, is here recognized as distinct. The species ... -
Additions to the Genus Bactris (Arecaceae)of Mesoamerica
(2000)Two new endemic species of Bactris, found in the understorey of humid forest on the Pacific Coast of Costa Rica, are described and illustrated. Bactris ana-juliae is 1.8-3.0 m tall, and B. herrerana is 2.0-3.0 m tall. -
Additions to the myxobiota of Central America
(2014)Given the fact that until recently the myxomycetes were an understudied group in Central America, it is not surprising that the number of new records for most countries is currently increasing at a steady pace. This is ... -
Addressing the Problem of Harmful Algal Blooms in Latin America and the Caribbean- A Regional Network for Early Warning and Response
(2018)Harmful algal blooms (HABs) constitute a worldwide problem, affecting aquatic ecosystems, public health and local economies. Supported by the International Atomic Energy Agency since 2009, Latin America and the Caribbean ... -
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 ... -
Agresividad y competencia por refugios en el murciélago Kerivoula hardwickii
(2022)En la competencia por recursos, generalmente se ha pensado que los animales con mayor tamaño y masa corporal tienen más probabilidades de ganar batallas. Sin embargo, recientemente se ha descubierto que las diferencias de ... -
Air-exposure behavior: a restricted or a common conduct among intertidal hermit crabs?
(2020)A new behavior related to shell care was recently reported for the intertidal hermit crab Clibanarius erythropus (Latreille, 1818) in the Gulf of Cádiz (southwestern Europe). It also has been observed in other species of ... -
Algoritmos de aprendizaje automático en la identificación de miARNS potencialmente asociados a discapacidades intelectuales no sindrómicas
(2022-05-20)Las Discapacidades intelectuales (IDs) son un grupo de trastornos del neuro-desarrollo con una alta heterogeneidad fenotípica y genotípica. La asociación de elementos genéticos, como genes, micro-ARNs o ARNs largos no ... -
Algunos Detalles Ultraestructurales de la Morfología Externa del Adulto y la Deutoninfa de Allonothrus neotropicus1 en Costa Rica
(2017-09)Se analiza la ultraestructura de Allonothrus neotropicus con ejemplares recolectados en hojarasca de suelo de la región Caribe de Costa Rica. Los caracteres que definen esta especies son: 1) seta e1 el doble de larga que ...