SciELO - Scientific Electronic Library Online

 
vol.20 issue1RELATIONSHIPS BETWEEN VARIOUS MANIFESTATIONS OF THE FORCE IN DIFFERENT MUSCLE GROUPS IN YOUNG ADULTSEFFECT OF THERMAL PHOSPHATE ON GROWTH AND PRODUCTION OF COMMON BEAN (Phaseolus vulgaris L.) CV 'ICA CERINZA' author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Revista U.D.C.A Actualidad & Divulgación Científica

Print version ISSN 0123-4226

Abstract

LANDINES P., Miguel A.; PRIETO M., Camilo A.; RODRIGUEZ V., Liliana  and  ROSADO P., Rafael. PROFILE OF SEXUAL STEROIDS OF THE CAPITÁN DE LA SABANA (Eremophilus mutisii) DURING A COMPLETE HYDROLOGICAL CYCLE. rev.udcaactual.divulg.cient. [online]. 2017, vol.20, n.1, pp.43-50. ISSN 0123-4226.

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.

Keywords : Testosterone; Estradiol; GSI; Fish reproduction.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License