Related Experiment Video
Updated: Apr 23, 2026

Incremental Temperature Changes for Maximal Breeding and Spawning in Astyanax mexicanus
Published on: February 14, 2021
Reproductive calendar of the Embera eyabida indigenous groups from the Nusidó community in Frontino, Colombia
Erika María Valencia Cortés1, María Mercedes Arias Valencia2
1Universidad de Antioquia, Medellín, Colombia.
Objective:
This work sought to characterize the calendar, pressure, and reproductive intensity of the Embera eyabida Indians from Nusidó.
Methodology:
. Through the female reproductive history technique, aimed at women older than 10 years of age from Nusidó during 2011, information was gathered from 63 participants. Said women represent 76% of the total of those older than 10 years of age.
Results:
The reproductive calendar is characterized by a mean age of menarche of 12 years and a mean entry into conjugal union of 14.4 years with an interval of less than one year for the start of the first gestation. The average of the intergenesic intervals was 29.3 months; these are short in 41.9% of the women, medium in 54.8% and above 60 months in 3.2%. Findings include: a medium and lower Reproductive Stress Index (RSI) in 71.4% of the women and a Reproductive Rate (RR) between medium and high in 19.0% of the women.
Conclusion:
Although early ages are observed in various parameters of the reproductive life, the results permit identifying changes in the indigenous people from Nusidó with respect to prior studies for the ethnic group and the subgroup; among these, there are: improved access to female literacy, delay in the entry into the union, and the start of maternity in young women.
Related Concept Videos
The Menstrual Cycle
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a...
Energy Budgets
Biological Clocks and Seasonal Responses
The Angiosperm Life Cycle
Overview of the Reproductive System
The gonads, or primary reproductive organs, produce gametes and sex hormones. In males, the testes produce spermatozoa and testosterone, which is responsible for developing secondary male sex characteristics, including a deeper voice, larger muscles, facial and body...
Menses Phase
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...

