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Mostrando ítems 1-10 de 59
Moscas sarcofágidas de Costa Rica (Diptera; Cyclorrhapha)
(Revista de Biología Tropical 30(1) p.105-106, 1982)
A brief review of the sarcophagid flies of Costa Rica revealed the presence of 34 species in 21 genera. Some of these species are associated with flowers, rotting fruits and human cadavers.
El problema de los efectos hemorrágico y mionecrótico por mordeduras de serpiente en el continente Americano
(1980)
Los efectos locales que aparecen como consecuencia de la mordedura de serpientes constituyen un problema de salud importante en las Américas. Sin embargo, la eficacia del suero antiofídico que se usa parece ser escasa, ...
Cannibalism by large tadpoles of Rhinophrynus dorsalis (Anura: Rhinophrynidae)
(2018)
In June 2014, we captured approximately 100 R. dorsalis tadpoles in a net from a seasonal wetland in Palo Verde National Park (10.3428 N, 85.3375 W) in N, 85.3375 W) in northwestern Costa Rica. While rearing the tadpoles ...
Age-dependent differences on neurochemistry and behavior in rats raised with low and high levels of maternal care
(2019)
In laboratory rats, naturally-occurring variations in maternal care have been used to study the neurobehavioral consequences of maternal nursing and to model the early-life adversity associated with many psychiatric ...
Efectos proteolitico, hemorragico y mionecrotico de los venenos de serpientes costarricenses de los generos Bothrops, Crotalus y Lachesis
(1980)
We studied the proteolytic, hemorrhagic and myonecrotic activities of ten Costa Rican species of snakes from the family Viperidae. All of them showed these three activities but we did not observe any correlation between ...
Evidence of maternal provisioning of alkaloid-based chemical defenses in the strawberry poison frog Oophaga pumilio
(2014)
Many organisms use chemical defenses to reduce predation risk. Aposematic dendrobatid frogs sequester alkaloid-based chemical defenses from a diet of arthropods, but research on these defenses has been limited to adults. ...
Detection of a synthetic sex steroid in the American crocodile (Crocodylus acutus): Evidence for a novel environmental androgen
(2017-08)
Endocrine-disrupting contaminants (EDC's) are well known to alter sexual differentiation among vertebrates via estrogenic effects during development, particularly in organisms characterized by
temperature-dependent sex ...
Cariotipos de las principales serpientes coral (Elapidae: Micrurus) de Costa Rica
(1979)
Se describen los cariotipos de las tres especies de serpientes de coral (Elapidae: Micrurus) más abundantes en Costa Rica: M. nigrocinctus, M. alleni y M. mipartitus. M. nigrocinctus presenta dos poblaciones cariotípicas ...
Evaluation of pharmacological therapies used in Costa Rica in patients with metastatic gastric cancer: a retrospective study
(2019-01-18)
Background: Gastric cancer is one of the leading causes of cancer death worldwide. Surgery is regarded as the best curative treatment option for gastric cancer; however, a high proportion of cases are diagnosed at advanced ...
Neutralization of proteolytic and hemorrhagic activities of Costa Rican snake venoms by a polyvalent antivenom
(1985)
The polyvalent antivenom produced at the Instituto Clodomiro Picado, Costa Rica, was tested for its capacity to neutralize proteolytic and hemorrhagic activities of ten Costa Rican crotaline venoms. In experiments with ...