Listar Biología por título
Mostrando ítems 746-765 de 1615
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Germinación de semillas de Crescentia alata (Bignoniaceae) en distintas condiciones de temperatura, luminosidad y almacenamiento
(2019)Crescentia alata (Bignoniaceae) es una especie arborescente de gran interés cultural y económico desde México hasta Costa Rica. Sin embargo, la protección de las poblaciones naturales y el establecimiento de plantaciones ... -
Germinación de semillas y crecimiento de plántulas de Myroxylon balsamum (Fabaceae, Papilionoideae):Especie considerada en peligro de extinción en Costa Rica
(2021)Introducción: Myroxylon balsamum (Fabaceae) es una especie de árbol considerada en peligro de extinción en Costa Rica y está incluida en alguna categoría de amenaza en otros países de América. Los estudios sobre germinación ... -
Gestión Integrada Marina y Costera en Costa Rica
(2020)Considerado como el primer país en vías de desarrollo en contar con un programa de Gestión Costera Integrada, Costa Rica es un país pequeño con dos costas que inalienablemente debe manejar sus recursos marino-costeros de ... -
El género Elaphrothrips Buffa, 1909 (insecta, thysanoptera, tubulifera) en América Central, discusión del concepto de especie y descripción de especies nuevas para Costa Rica
(2015-08)Se analiza el concepto de especie dentro del género Elaphrothrips, así como los problemas de criterios taxonómicos relacionados a este grupo. Además, se discuten las variaciones morfológicas del mismo y se presentan las ... -
El género Trybomia Karny 1911 en América Central (Insecta: Thysanoptera)
(2015-02-27)El género Trybomia Karny 1911 cuenta con pocas especies, todas en el Neotrópico. La última especie se describió hace 82 años según los datos expuestos en la literatura. El material de estudio se obtuvo de muestreos llevados ... -
Goodyera R.Br.
(2022-12-01)The genus Goodyera was named in 1813 by leading Scottish botanist Robert Brown, who was director of the botany department of the British Museum, and president of the Linnaean Society of London. The name honors the English ... -
Grado de vulnerabilidad ante la presencia del cocodrilo americano (Crocodylus acutus) en cinco comunidades costeras de la Región Pacifico Central de Costa Rica, 2017 - 2018
(2020-09)El conflicto entre seres humanos y animales silvestres es un fenómeno recurrente a nivel mundial y que se origina desde que ambos comparten los mismos hábitats y recursos. Entre el 2017 y el 2018, se evaluó el grado de ... -
Una gran novedad en la literatura orquideológica neotropical, más allá de la taxonomía
(2006)Se analiza el aporte novedoso del libro "Las Orquídeas de México" (E. Hágsater et al., 2005, Instituto Chinoín, México) al estudio de la historia natural de las orquídeas neotropicales. -
Greenidea psidii (Hemiptera: Aphididae: Greenideinae) New Invasive Aphid in Costa Rica
(2009-06)Greenidea (Trichosiphum) psidii van der Goot 1916 is recorded for the first time in Costa Rica and Central America. The species has been recorded on Psidium guajava, Psidium friedrichst halianum and Myrciaria cauliflora ... -
Ground Anoles (Anolis humilis) Discriminate between Aposematic and Cryptic Model Insects
(2016)Aposematic coloration allows predators to use visual cues to avoid eating potentially toxic or distasteful prey. Predators across many animal taxa actively avoid aposematically colored prey and remember distasteful brightly ... -
Growth and hydrogen production by three Chlamydomonas strains cultivated in a commercial fertilizer
(2019)In the present investigation, we report the growth and hydrogen production of two wild type Chlamydomonas reinhardtii strains isolated from a tropical oxidation pond in Costa Rica. The performance of these two new isolates ... -
Growth and hydrogen production of outdoor cultures of Synechocystis PCC 6803
(2016)Synechocystis sp. PCC 6803, a freshwater cyanobacterium, was cultivated outdoors in a 50 L tubular photobioreactor to study the acclimation of cells to solar light in cultures grown at different initial mean biomass ... -
Growth and natural mortality of Diadema mexicanum A. Agassiz, 1863, from west-central Mexico
(2020)Abstract: Population parameters of Diadema mexicanum have not yet been studied; therefore, the objective of this work was to describe, for the first time, the growth and mortality by age of this sea urchin. The growth curve ... -
Guía de los áfidos alados de Costa Rica
(2003-05)This guide is a compilation of limited morphological and biological information on the winged morphs of 60 species of aphids that have been collected in Costa Rica. It should not be viewed as a definitive taxnomic treatise ... -
Habenaria Willd.
(2022-12)The genus Habenaria was named in 1805 by the famous German botanist, dendrologist, and pharmacist Carl Ludwig Willdenow, a professor at the University of Berlin, member of the Berlin Academy of Sciences and director of the ... -
Habitat adaptation drives speciation of a Streptomyces species with distinct habitats and disparate geographic origins
(2022-01-11)Microbial diversification is driven by geographic and ecological factors, but how the relative importance of these factors varies among species, geographic scales, and habitats remains unclear. Streptomyces, a genus of ... -
Habitat fragmentation negatively affects effective gene flow via pollen, and male and female fitness in the dioecious tree, Spondias purpurea (Anacardiaceae)
(2021-03-01)Habitat fragmentation is recognized as one of main threats to global biodiversity. Habitat fragmentation negatively affects population size and mutualistic interactions that directly impact plant fitness and genetic ... -
Habitat fragmentation reduces plant progeny quality: a global synthesis
(2019-05-14)Most of the world’s land surface is currently under human use and natural habitats remain as fragmented samples of the original landscapes. Measuring the quality of plant progeny sired in these pervasive environments ... -
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 ...