Browsing Revista de Biología Tropical by Title
Now showing items 167-186 of 188
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Shade tolerance within the context of the successional process in tropical rain forests
(2019)Abstract: Shade tolerance (the capacity to survive and grow over long periods under shade) is a key component of plant fitness and the foundation of current theories of forest succession in tropical rain forests. It serves ... -
Substrate vibrations in the scorpion Centruroides margaritatus (Scorpiones: Buthidae) during courtship
(Rev. Biol. Trop. (Int. J. Trop. Biol. ISSN-0034-7744) Vol. 57 (Suppl. 1): 267-274, November 2009, 2009-11)Mating behavior in Centruroides margaritatus, as in other scorpion species, includes a series of rapid rocking or shaking movements of the male (“juddering”). It has been suggested that substrate vibrations are generated ... -
El suero de neonatos de Clelia clelia (Serpentes: Colubridae) neutraliza la acción hemorrágica del veneno de Bothrops asper (Serpentes: Viperidae).
(1989)The ability of serum from nine newbom specimens of Clelia clelia (Colubridae) to neutralize hernorrhagic action of Bothrops asper venom was tested. All serum samples neutralized completely the hernorrhagic effect of the ... -
The countries and languages that dominate biological research at the beginning of the 21st century
(Revista de Biolología Tropical 53 (1-2): 283-294, 2005, 2005)Traditionally, studies of scientific productivity are biased in two ways: they are based on Current Contents, an index centered in British and American journals, and they seldom correct for population size, ... -
The dystrophinopathies in Costa Rica
(Rev Biol Trop 52(3), 2004, 2004)A five-years long study aiming to describe the basic genetic epidemiology of the dystrophinopathies in Costa Rica recruited 31 patients with clinical symptoms of DMD/BMD at the National Children’s Hospital (HNN). This ... -
The forgotten habitats in conservation: early successional vegetation
(2019)Conservation efforts in terrestrial environments have focused on preserving patches of natural habitats and restoring disturbed habitats, with the main goal of transforming them into forests or habitats that resemble the ... -
The STR polymorphism (AAAAT)n within the intron 1 of the tumor protein 53 (TP53) locus in 17 populations of different ethnic groups of Africa, America, Asia and Europe
(Revista de Biología Tropical, 52(3):645-657, 2004)The SIR (A.AAAT). within intron 1 of the TP53 Locus was screened in 17 populations from 3 main ethnic groups: Europeans, Asiatics, and Africans. and from the hybrid population of Costa Rica (1968 samples). Three alleles, ... -
Los tisanópteros del grupo genérico Anaphothrips (Thysanoptera: Thripidae), con énfasis en América Central
(Rev. Biol. Trop. (Int. J. Trop. Biol.), v. 55, n. 1, 2007, 2007)Thysanopterans of the generic group Anaphothrips (Thripidae: Thripinae) with emphasis in Central America. A taxonomic revision and phylogenetic analysis of the generic group Anaphothrips are presented. Several genera in ... -
Trichoptera
El orden Trichoptera (en inglés llamado “caddisflies”) pertenece al grupo de órdenes de insectos, en los cuales la totalidad de las especies depende del medio acuático para su desarrollo. ... -
Ultraestructura del bambú Guadua amplexifolia (Poaceaea: Bambusoideae) presente en Costa Rica
(2006-12)Se estudió la ultraestructura anatómica de la lámina y la vaina de la hoja, así como de la bráctea del culmo, de Guadua angustifolia var. Bicolor, por medio de los micros-copio electrónico de barrido. Se encontraron ... -
Ultraestructura del bambú Guadua angustifolia var. bicolor (Poaceae: Bambusoideae), presente en Costa Rica
(2006-08-20)Sections of leaf lamina, leaf sheath and branches of adult Guadua paniculata collected in Costa Rica, were studied ultrastructurally. Diagnostic ultrastructural characteristics include the cellular pattern of the adaxial ... -
Ultraestructura del bambú Guadua macclurei (Poaceae: Bambusoideae) de Costa Rica
(2006-08-20)Se evaluaron ultraestructuralmente secciones de la lámina de la hoja, vaina de la hoja y rama, de una planta adulta de Guadua macclurei. Las brácteas del culmo carecen de setas orales. En la superficie adaxial de la lámina ... -
Ultraestructura del bambú Guadua paniculata (Poaceae: Bambusoideae) de Costa Rica
(2006-12)Sections of leaf lamina, leaf sheath and branches of adult Guadua paniculata collected in Costa Rica, were studied ultrastructurally. Diagnostic ultrastructural characteristics include the cellular pattern of the adaxial ... -
Ultrastructure and histology of organogenesis induced from shoot tips of maize (Zea mays, Poaceae)
(Revista de Biología Tropical; vol.57(supl.1), 2009-11)Shoot tips of maize (Zea mays L.) were cultured on Murashige and Skoog medium supplemented with 2 mg/l BA +1 mg/l 2,4-D +40 mg/l, to investigate phases of ontogenetic development. The study used light microscopy as well ...