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Mostrando ítems 138-157 de 1640
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Ant–Aphid Relations in Costa Rica, Central America (Hymenoptera: Formicidae; Hemiptera: Aphididae)
(2012)We present the first catalogue of ant-aphid associations (Hymenoptera: Formicidae / Hemiptera: Aphididae) of Costa Rica. 29 species of ants and 18 species of aphids establish 48 relationships. Those interactions seem not ... -
Aphididae (Hemiptera: Sternorrhyncha) from Costa Rica, with new records for Central America
(2010-06-21)Sixty-four aphid species (Hemiptera, Sternorrhyncha: Aphididae) were caught by the authors in Costa Rica during 2008. The Costa Rican aphid catalogue is presented from our data and the records in the literature; it consists ... -
Aportes científicos de un botánico universal: Luis Diego Gómez Pignataro (1944-2009)
(2010)Se analizan detalladamente las múltiples contribuciones científicas de Luis Diego Gómez a la botánica y la historia natural de Costa Rica y otros países neotropicales. -
Aportes para una sociedad del conocimiento y la innovación
(2014-06)La celebración del segundo centenario de independencia del país debería estar directamente asociada con el cumplimiento de grandes metas nacionales, una de ellas convertirse en una sociedad del conocimiento y la innovación, ... -
Aportes perdurables de un botánico destacado - Dr. Focko Weberling in memoriam (1926-2009)
(2009)Se comenta y analiza la vida y la obra del botánico alemán Focko Weberling, un prestigioso sistemático vegetal, gran conocedor de la morfología vegetal y especialista de talla mundial en el estudio de la estructura de ... -
Aposematismo en la rana Phyllobates vittatus (anura: Dendrobatidae): integrando defensas, señales y riesgo de depredación
(2019-10-01)El aposematismo es una estrategia defensiva en la cual animales que poseen una defensa lo advierten a los depredadores a través de una señal conspicua. Por ejemplo, algunos animales tóxicos o con poca palatabilidad le ... -
Applying the SES Framework to coral reef restoration projects on the Pacific coast of Costa Rica
(2023)Introduction: Global and local stressors have led to rapid declines in coral reef health. The high rates of coral degradation have motivated restoration initiatives worldwide. Evaluation of these initiatives has provided ... -
Aquatic fungi: targeting the forgotten in microbial ecology
(2016-06)Fungi constitute important and conspicuous components of aquatic microbial communities, but their diversity and functional roles remain poorly characterized. New methods and conceptual frameworks are required to accurately ... -
Aquatic insect diversity of Costa Rica: state of knowledge
(2008)Costa Rica hosts an extraordinarily high biodiversity and is among the best studied neotropical countries. Insects represent the most diverse group of organisms, not only in terrestrial but also in aquatic, especially ... -
Arabidopsis CHROMOSOME TRANSMISSION FIDELITY 7 (AtCTF7/ECO1) is required for DNA repair, mitosis and meiosis
(The Plant Journal 75: 927–940, 2013-06-10)The proper transmission of DNA in dividing cells is crucial for the survival of eukaryotic organisms. During cell division, faithful segregation of replicated chromosomes requires their tight attachment, known as sister ... -
Arabidopsis Qc‑SNARE genes BET11 and BET12 are required for fertility and pollen tube elongation
(2015-10-01)Pollen tubes are rapidly growing specialized structures that elongate in a polar manner. They play a crucial role in the delivery of sperm cells through the stylar tissues of the flower and into the embryo sac, where the ... -
El arbol de “ajo” (Caryocar-costaricense) una especie endémica de Costa Rica y Panama
(2018-01-03)La especie Caryocar costaricense pertenece a la familia Caryocaraceae. Fue descrita en 1913 por el botánico estadounidense John Donnell Smith (el capitán Smith). El nombre Caryocar se deriva del Griego Karyon, “nuez” y del ... -
Aristolochia gorgona (Aristolochiaceae), a new species with giant flowers from Costa Rica and Panama
(2002-05)Aristolochia gorgona is described from the Atlantic watershed of Costa Rica and central and eastern Panama. It is similar to A. grandiflora Sw., with which it has been confused in the past. The extensive reported synonymy ... -
Aristolochia hondurensis (Aristolochiaceae), a new species from Honduras
(2023-02-23)Aristolochia hondurensis, a new species of Aristolochia series Hexandrae subseries Hexandrae, endemic to Honduras, is described and illustrated. It is a species morphologically similar to Aristolochia anguicida, from which ... -
Aristolochia quiricoana (Aristolochiaceae), a new species from southern Costa Rica
(2021)Background and Aims: Aristolochia is the largest genus in Aristolochiaceae and is widely distributed in the world. A recent synopsis of Aristolochia in Costa Rica recognized 19 species; nevertheless, recent botanical ... -
Aristolochiaceae
(2020)Manual de Plantas de Costa Rica is a concise, illustrated guide to all of the species of native, naturalized and commercially cultivated vascular plants of this Central American country, which lies between Nicaragua and ... -
Aromatic and aliphatic thiol self-assembled monolayers on Au: Anchoring and delivering copper species
(2011)The immobilization of dinuclear copper(II) acetate complexes (Cu2(CH3COO)4·2H2O) on self-assembled monolayers (SAMs) of different aliphatic and aromatic thiols with oxygen and nitrogen donors at the end group is investigated ... -
El arrecife coralino de Punta Cocles, costa Caribe de Costa Rica
(2004)This paper describes the Punta Cocles reef (Limón, Costa Rica). Data were obtained by sampling nine transects along the coast and observations done by skin diving between September and November of 2002.This reef consist ... -
Artificial cavities and substrates for cavity-nesting birds in Neotropical urban environments: A novel resource or the last opportunity to breed?
(2021)Urban development reduces the abundance of most natural resources for some birds but also provides new opportunities for others. One group that is more likely affected by urban development is the cavity-nesting species ...