Biología
Recent Submissions
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Uso de material artificial para la construcción de nidos de aves: potenciales consecuencias sobre el éxito reproductivo de Turdus grayi (Passeriformes: Turdidae)
(2020-07-29)El exponencial aumento en la población humana ha generado una rápida expansión de las zonas urbanas. El aumento en el área de las ciudades produce que algunas especies entren en contacto directo con nuevos recursos ... -
Assemblages of corticolous myxomycetes associated with species of Pinus (Pinaceae) in four different regions of the world
(2020-07-02)Corticolous myxomycetes associated with four species of pine in different regions of the world were investigated. Samples of bark collected from 20 trees in each region were used to prepare 240 moist chamber cultures, ... -
Ontogeny of an interactive call-and-response system in Spix's disc-winged bats
(2020)We investigated the ontogenetic changes of two call types, the inquiry call and the response call, which comprise an interactive communication system in Spix's disc-winged bats, Thyroptera tricolor. We documented structural ... -
Mosses as spore traps for myxomycetes
(2020-07-06)Small-mesh nylon bags filled with autoclaved samples of mosses were placed out in the field in northwest Arkansas and central Costa Rica to assess the extent to which mosses could serve as spore traps for myxomycetes. The ... -
Virulencia de hongos nativos del orden Hypocreales sobre Bemisia tabaci, estudio de las condiciones óptimas para el desarrollo de los hongos y registros de moscas blancas silvestres para Costa Rica
(2020)Los hongos Hypocreales son hongos entomopatógenos con potencial en control biológico de insectos plaga. El objetivo de este estudio fue identificar especies de hongos patógenos que parasitan insectos de la familia Aleyrodidae ... -
Neurobehavioral Effects of Restricted and Unpredictable Environmental Enrichment in Rats
(2020-05)To study how motivational factors modulate experience-dependent neurobehavioral plasticity, we modify a protocol of environmental enrichment (EE) in rats. We assumed that the benefits derived from EE might vary according ... -
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 ... -
External Morphology of Tagosodes orizicolus (Homoptera: Delphacidae) Revealed by Scanning Electron Microscopy
(2001)A comprehensive analysis of the ultrastructure of the delphacid rice pest Tagosodes orizicolus (Muir) was undertaken using scanning electron microscopy to resolve taxonomic problems in the distinction of females and nymphs ... -
Widespread Occurrence of Black-Orange-Black Color Pattern in Hymenoptera
(2019)Certain color patterns in insects show convergent evolution reflecting potentially important biological functions, for example, aposematism and mimicry. This phenomenon has been most frequently documented in Lepidoptera and ... -
Spectral measure of color variation of black-orange-black (BOB) pattern in small parasitoid wasps (Hymenoptera: Scelionidae), a statistical approach
(2019)Small parasitoid wasps are abundant and extremely diverse, yet their colors have not been analyzed. One of the more common color patterns observed in these wasps is a black-orange-black pattern, which is especially common ... -
Rediscovering the value of families for psychiatric genetics research
(2018-06-28)As it is likely that both common and rare genetic variation are important for complex disease risk, studies that examine the full range of the allelic frequency distribution should be utilized to dissect the genetic ... -
Búsqueda y caracterización de proteínas biopesticidas novedosas a partir de cepas de Bacillus thuringiensis
(1999)En la actualidad se desarrollan y se cultivan comercialmente plantas transgénicas que expresan endotoxinas de Bacillus thuringiensis (Bt) como biopesticida para el control específico de insectos. Sin embargo, se teme que ... -
Connecting biology, optics and nanomechanical properties in micro-wasps
(2020)Coloration in insects provides a fruitful opportunity for interdisciplinary research involving both physics and biology, and for a better understanding of the design principles of biological structures. In this research ... -
Phenology of an urban population of Lyssomanes jemineus Peckham & Wheeler (Araneae: Salticidae) with a list of other jumping spiders from the same Costa Rican site
(2019)Jumping spiders were sampled for 24 months in a Costa Rican urban environment and one of the species collected, Lyssomanes jemineus, was observed in detail in order to document its phenology in this disturbed habitat. ... -
Plantas del Dosel del Bosque: Guía para la identificación de géneros de plantas epífitas con flores de Costa Rica
(2020-01-31)Plantas del Dosel del Bosque es una guía botánica que ofrece información sobre las “plantas epífitas”, que son aquellas plantas que se han especializado en vivir sobre otras plantas y se han independizado de las condiciones ... -
Soybean protease inhibitors increase Bacillus thuringiensis subs. israelensis toxicity against Hypothenemus hampei
(2020)The coffee berry borer (Hypothenemus hampei Ferrari, CBB) is one of the most devastating pests on coffee plantations around the world. Although CBB is susceptible to the effect of δ–endotoxins ... -
Contact calling in context: intra- and intergroup variation in vocalization rates depend on a call’s function
(2020)To maintain group cohesion while coordinating group movements, individuals might use signals to advertise the location of a route, their intention to initiate movements, or their position at a given time. In highly mobile ... -
Patrones de coloración en Hymenoptera: su origen, evolución y posible función en miras a la aplicación biomimética
(2020-04-28)El presente estudio proporciona la primera caracterización física y funcional del patrón negro-naranja-negro (BOB) que se encuentra en avispas parasitoides de muy pequeño tamaño (3-10 mm). Aunque se había reportado previamente ... -
Caracterización de los conflictos humano-felinos y otras especies silvestres en el área de amortiguamiento de la Reserva Biológica Alberto Manuel Brenes, 2017-2020
(2020)El aumento de la población humana ha ejercido presión sobre los recursos naturales razón por la cual fue necesario el establecimiento de áreas protegidas para conservar la biodiversidad. Sin embargo, cuando hay traslape ... -
Morfología, ecolocalización y uso de micro-hábitat de murciélagos del género Pteronotus (Chiroptera: Mormoopidae) en el Parque Nacional Barra Honda, Costa Rica
(2020)En el trópico hay una gran riqueza de especies de murciélagos insectívoros y esta riqueza se mantiene, en parte, por el reparto eficiente de los recursos ambientales. Estudios sobre la repartición de recursos entre los ...
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