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Mostrando ítems 71-80 de 133
Reproductive biology and behavior of Doru taeniatum (Forficulidae)
(Revista de BioIogía Tropical 36(2B): 437-440, 1988., 1988)
This study deals with the biology of Doru taeniatum, (Forficuüdae), particulary the habitat, feeding, reproduction, maternal care, and nymphal stages. The density of adults is higher in the older corn plants.
The earwings ...
Micronuclei frequency in lymphocytes of individuals occupationally exposed to pesticides
(Revista de Biología Tropical 49 (1):001-008, 2001, 2001)
Pesticides have been widely used in developing countries over the years. A large amount of these
remains in the environment and organisms. Pesticide pollution is detrimental to human health. The effects can
be seen on a ...
Atmospheric forcing of cool subsurface water events in Bahía Culebra, Gulf of Papagayo, Costa Rica
(Revista Biología Tropical, 60 (2): 173-186, 2012-04)
Bahía Culebra, at Gulf of Papagayo on the north Pacific coast of Costa Rica, is an area of seasonal upwelling where more intense cooling events may occur during some boreal winter weeks mainly. To study these extreme cool ...
Cambios post mortem en mucosa intestinal y tejido pulmonar de Mus musculus, observados al microscopio electrónico de barrido
(Revista de Biología Tropical 29(2) p.265-272, 1981)
Post mortem ultrastructural alterations of surface epithelial tissues were
studied by scanning electron microscopy. Ten male albino mice were sacrificed,
and the duodenum, ileum arid lung excised and fixed immediately, ...
Diagnóstico prenatal citogenético mediante amniocentesis durante los trimestres II y III de gestación en Costa Rica
(Revista de Biología Tropical 49 (3-4): 1227-1236, 2001, 2001-12)
El objetivo de este estudio fue identificar cromosomopatía fetal en voluntarias con embarazos de alto riesgo genético, brindar adecuada atención obstétrica y pediátrica y asesoramiento genético. En 842 embarazadas se obtuvo ...
Aspectos ecológicos del cáncer gástrico en Costa Rica
(Revista de Biología Tropical 31(1) p.11-18, 1983-07-18)
An analysis of 1315 cases of gastric cancer from the records of the Ministry of Public Health, San
Jose, Costa Rica between 1977 and 1980 showed important geographical differences in the incidence, and
especially in ...
Algunas características de las corrientes marinas en el Golfo de Nicoya, Costa Rica
(2016-10-13)
The spatial and vertical structure of the water currents and its relationship with the tidal cycles were studied using current meters in the Gulf of Nicoya. In the upper gulf, the vertical marine current differences increase ...
Metals in coastal mollusks of Costa Rica
Metales en moluscos costeros de Costa Rica
(2015-12)
The input of contaminants to coastal ecosystems is a global problem on the rise. Data on metal pollution from tropical sites is often lacking and pilot surveys are urgently needed to provide a general framework to estimate ...
Intoxicación paralítica por mariscos (IPM) por Spondylus calcifer contaminado con Pirodinium bahamense, Costa Rica, 1989-1990
(1990)
This paper describes an outbreak of paralytic shellfish poisoning (PSP), affecting human populations on the
Pacific Coast of Costa Rica in October 1989. Numbness in arms, face and legs occurred 30 to 45 minutes after ...
Estudio comparativo de venenos de ejemplares recien nacidos y adultos de Bothrops asper
(1980)
Se estudiaron comparativamente los venenos de ejemplares recién nacidas (menos de un mes de edad) y adultas de Bothrops asper de dos regiones costarricenses: San Carlos en la vertiente atlántica y Puriscal en la pacífica. ...