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Mostrando ítems 11-20 de 62
Interconexión a nivel ciclónico-atmosférico entre el Caribe y el Pacífico Centroamericano.
(Revista de Biología Tropical, 46 sumpl. 5: 09-21, 1998, 1998)
Some atmospheric properties in the Pacific and Caribbean marine basins close to the Central American Isthmus and their possible interconnections are analized, based on a statistical study. The band describing southern ...
Monitoreo de pastos marinos en Perezoso, Cahuita, Costa Rica (sitio CARICOMP)
(Revista de Biología Tropical: Vol. 55 (1), 55-66, 2007-03)
The seagrass of
Perezoso (Cahuita National Park, Caribbean coast of Costa Rica) was monitored using the CARICOMP protocol. Productivity (2.7±1.15 g/m
2
/d; n=74) was intermediate, compared to other Caribbean sites. ...
Copulatory behaviour and the process of intromission in Anastrepha ludens (Diptera: Tephritidae)
(Rev. Biol. Trop. 59 (1): 291-297. Epub 2011 March 01., 2011-03)
Complex genitalia occur in many arthropods and in some species extreme female morphologies lead
to serious mechanical difficulties for males. Tephritid flies offer examples of such complex genitalia. Because
of their ...
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, ...
Photochemical efficiency of adult and young leaves in the neotropical understory shrub Psychotria limonensis (Rubiaceae) in response to changes in the light environment
(Revista de Biologia Tropical 52 (4): 839-844, 2004-12)
We explored the short-term adjustment in photochemical efficiency (Fv/Fm) in adult and young leaves of the understory neotropical shrub Psychotria limonensis Krause (Rubiaceae) in response to rapid changes in the light ...
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 ...
Recolecta de artrópodos para prospección de la biodiversidad en el Área de Conservación Guanacaste, Costa Rica
(Revista de Biología Tropical 52(1): 119-132, 2004, 2004)
This study describes the results and collection practices for obtaining arthropod samples to be studied as potential sources of new medicines in a bioprospecting effort. From 1994 to 1998, 1800 arthropod samples of 6-10 g ...
Regeneración de la vegetación arbórea en una pequeña reserva forestal urbana del nivel premontano húmedo, Costa Rica
(Rev. Biol. Trop., 44(2): 575-580,1996, 1996)
The tropical premontane moist forest is one of the most destructed Iife zones in Costa Rica. For such regions, a small natural preserve system has been proposed. An inventory of trees greater ...
Ultrastructure and histology of organogenesis induced from shoot tips of maize (Zea mays, Poaceae)
(Rev. biol. trop vol.57 supl.1 San José nov. 2009, 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 ...