Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle

Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle

Specimens of Eremophilus mutisii were captured monthly on the upper part of the Bogotá River (municipality of Suesca). The specimens were anesthetized, weighed and measured. Subsequently, a blood sample was taken. The gonads were extracted and weighed to calculate the gonadosomatic index (GSI). Testosterone (T) and estradiol (E2) were determined by chemiluminescence technique. The proportion of females was always greater than that of males, and there were months in which only females were obtained. The T values of the females remained very low during the whole cycle, remaining low or imperceptible levels, with a single peak in October. In males, levels were always higher reaching high values in April, September, November, and December, with a peak in November. E2 in females showed variables values with high levels in November, December and January with a peak in December. In males, it was only possible to determine E2 in November, December, March, April and May, since, during February, June, August, and September the values were imperceptible and in the remaining months no male was captured. The maximum value was obtained in November and the minimum in March and April. In females, the peaks of E2 coincided with the higher values of GSI, while T maintained its low value, independently of this index. In males, the relationship between T and GSI was also coincident, although not as evident as in females. Also, a clear trend was not observed between the E2 and GIS ratio for males.

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Main Authors: Landines P, Miguel A., Prieto M, Camilo A., Rodríguez V, Liliana, Rosado P., Rafael
Format: Digital revista
Language:spa
Published: Universidad de Ciencias Aplicadas y Ambientales U.D.C.A 2017
Online Access:https://revistas.udca.edu.co/index.php/ruadc/article/view/61
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id rev-ruadc-co-article-61
record_format ojs
institution UDCA CO
collection OJS
country Colombia
countrycode CO
component Revista
access En linea
databasecode rev-ruadc-co
tag revista
region America del Sur
libraryname Biblioteca de la UDCA de Colombia
language spa
format Digital
author Landines P, Miguel A.
Prieto M, Camilo A.
Rodríguez V, Liliana
Rosado P., Rafael
spellingShingle Landines P, Miguel A.
Prieto M, Camilo A.
Rodríguez V, Liliana
Rosado P., Rafael
Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle
author_facet Landines P, Miguel A.
Prieto M, Camilo A.
Rodríguez V, Liliana
Rosado P., Rafael
author_sort Landines P, Miguel A.
title Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle
title_short Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle
title_full Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle
title_fullStr Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle
title_full_unstemmed Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle
title_sort profile of sexual steroids of the capitán de la sabana (eremophilus mutisii) during a complete hydrological cycle
description Specimens of Eremophilus mutisii were captured monthly on the upper part of the Bogotá River (municipality of Suesca). The specimens were anesthetized, weighed and measured. Subsequently, a blood sample was taken. The gonads were extracted and weighed to calculate the gonadosomatic index (GSI). Testosterone (T) and estradiol (E2) were determined by chemiluminescence technique. The proportion of females was always greater than that of males, and there were months in which only females were obtained. The T values of the females remained very low during the whole cycle, remaining low or imperceptible levels, with a single peak in October. In males, levels were always higher reaching high values in April, September, November, and December, with a peak in November. E2 in females showed variables values with high levels in November, December and January with a peak in December. In males, it was only possible to determine E2 in November, December, March, April and May, since, during February, June, August, and September the values were imperceptible and in the remaining months no male was captured. The maximum value was obtained in November and the minimum in March and April. In females, the peaks of E2 coincided with the higher values of GSI, while T maintained its low value, independently of this index. In males, the relationship between T and GSI was also coincident, although not as evident as in females. Also, a clear trend was not observed between the E2 and GIS ratio for males.
publisher Universidad de Ciencias Aplicadas y Ambientales U.D.C.A
publishDate 2017
url https://revistas.udca.edu.co/index.php/ruadc/article/view/61
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spelling rev-ruadc-co-article-612020-04-02T12:40:11Z Profile of sexual steroids of the capitán de la sabana (Eremophilus mutisii) during a complete hydrological cycle Perfil de esteroides sexuales del capitán de la sabana (Eremophilus mutisii) durante un ciclo hidrológico completo Landines P, Miguel A. Prieto M, Camilo A. Rodríguez V, Liliana Rosado P., Rafael Testosterona Estradiol IGS Reproducción de peces Testosterone Estradiol GSI Fish reproduction Specimens of Eremophilus mutisii were captured monthly on the upper part of the Bogotá River (municipality of Suesca). The specimens were anesthetized, weighed and measured. Subsequently, a blood sample was taken. The gonads were extracted and weighed to calculate the gonadosomatic index (GSI). Testosterone (T) and estradiol (E2) were determined by chemiluminescence technique. The proportion of females was always greater than that of males, and there were months in which only females were obtained. The T values of the females remained very low during the whole cycle, remaining low or imperceptible levels, with a single peak in October. In males, levels were always higher reaching high values in April, September, November, and December, with a peak in November. E2 in females showed variables values with high levels in November, December and January with a peak in December. In males, it was only possible to determine E2 in November, December, March, April and May, since, during February, June, August, and September the values were imperceptible and in the remaining months no male was captured. The maximum value was obtained in November and the minimum in March and April. In females, the peaks of E2 coincided with the higher values of GSI, while T maintained its low value, independently of this index. In males, the relationship between T and GSI was also coincident, although not as evident as in females. Also, a clear trend was not observed between the E2 and GIS ratio for males. Fueron capturados, mensualmente, adultos de Eremophilus mutisii, en la parte alta del río Bogotá (Municipio de Suesca). Los ejemplares fueron anestesiados, pesados y medidos. Posteriormente, se tomaron muestras de sangre, se extrajeron y se pesaron las gónadas, para cálculo del índice gonadosomático (IGS). Se determinaron testosterona (T) y estradiol (E2), por quimioluminiscencia. La proporción de hembras fue mayor que la de machos, existiendo muestreos en los que solo se obtuvieron hembras. Los niveles de T en hembras permanecieron muy bajos durante todo el ciclo, manteniéndose así o indetectables, con un único pico en octubre. En machos, los niveles fueron superiores, alcanzando valores mayores en abril, septiembre, noviembre y diciembre, con pico en noviembre. El E2 en hembras mostró niveles variables, observándose niveles elevados durante noviembre, diciembre y enero, con pico en diciembre. En machos, solo fue posible determinar E2 en noviembre, diciembre, marzo, abril y mayo, puesto que durante febrero, junio, agosto y septiembre, los valores fueron indetectabes y en los meses restantes, no se capturó ningún macho. El valor máximo fue en noviembre y el mínimo en marzo y abril. En hembras, los picos de E2 coincidieron con los valores más altos de IGS, mientras que la T mantuvo su valor bajo, independientemente de dicho índice. En machos, la relación entre T e IGS también fue coincidente, aunque no de manera tan evidente como en hembras. No se observó una tendencia clara entre la relación de E2 e IGS para machos.   Universidad de Ciencias Aplicadas y Ambientales U.D.C.A 2017-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.udca.edu.co/index.php/ruadc/article/view/61 10.31910/rudca.v20.n1.2017.61 Revista U.D.C.A Actualidad & Divulgación Científica; Vol. 20 No. 1 (2017): Revista U.D.C.A Actualidad & Divulgación Científica. January - June; 43-50 Revista U.D.C.A Actualidad & Divulgación Científica; Vol. 20 Núm. 1 (2017): Revista U.D.C.A Actualidad & Divulgación Científica. Enero - Junio; 43-50 Revista U.D.C.A Actualidad & Divulgación Científica; v. 20 n. 1 (2017): Revista U.D.C.A Actualidad & Divulgación Científica. 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