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Premarital sex in Costa Rica: incidence, trends and determinants
(1991-03)
A hazards model using retrospective data
from a national sample of Costa Rican
women aged 15-24 interviewed in 1986
indicates that every year approximately 10
'tercent of women aged 17-19—the peak
ages for the initiation ...
Breve historia de los conceptos de sexo y género
(2015)
En el siguiente artículo se hace una recopilación y sistematización de los conceptos de sexo y género dentro de la historia del feminismo. Esta compilación y sistematización de información referente a los conceptos de sexo ...
Sex practices and knowledge about HIV/AIDS among drug users in a low-income urban community of Costa Rica
(2014)
HIV/AIDS transmission among drug users is associated with education, sex practices and substance use. This study examined 159 drugs users’ knowledge, beliefs and sex behavior related to HIV/AIDS risk in Costa Rica. Results ...
Sex pheromone components of Diatraea considerata (Heinrich) (Lep., Pyralidae)
(1998-08)
Three aldehydes. (Z)-11-hexadecenal (Z11–16:Ald), (Z)-7-hexadecenal (Z7–16:Ald) and (Z)-13-octadecenal (Z13–18:Ald), in a ratio of 74:23:3 are female-produced sex pheromone components of the pyralid moth, Diatraea considerata ...
Cariotipos de diez especies de serpientes costarricenses de la familia Viperidae
(1979)
All the karyotypes of ten snake species of the family Viperidae from Costa Rica have a diploid number of 36 chromosomes, 16 macro- and 20 microchromosomes; females show an heteromorphism in the fourth pair. The karyological ...
HIV/AIDS in Costa Rica: epidemiological and sociological features,1993
(1995)
Acquired immunodeficiency syndrome (AIDS) was first detected in Costa Rica in 1983. For four years most known cases were in hemophiliac men. Thereafter, AIDS in homosexual and bisexual men predominated. By December 31 of ...
Karyotype of the yellow-bellied sea snake, Pelamis platurus
(1980)
In this paper we describe the karyotype of the yellow-bellied sea snake, Pelamis platurus from Costa Rica. The diploid number is 38 chromosomes, with 20 macrochromosomes and 18 microchromosomes. The pairs 1 and 2 are ...
A Population-based Serosurveillance of Syphilis in Costa Rica
(1991-04)
As part of a case-control study to investigate the high incidence of cervical cancer in Costa Rican women, the seroprevalence of the treponematoses, in particular, syphilis was determined. In each age group, women with a ...
Ecological Correlates of Roost Fidelity in the Tent-Making Bat Artibeus watsoni
(2007-05)
Roost switching is a common occurrence in bats, yet the causes and consequences of such behavior are poorly understood. In this study we explore the ecological correlates of roost fidelity in the tent‐making bat Artibeus ...
All-offspring natal philopatry in a Neotropical bat
(2011-11)
Natal dispersal is a strategy employed by individuals to avoid reproducing with close relatives. In most
bats, incestuous matings are prevented by the departure of one sex; thus, all-offspring philopatry has
rarely been ...