Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle
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| Formato: | Online |
| Idioma: | eng |
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Universidad de Costa Rica
2011
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/3176 |
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RBT31762022-06-06T18:54:02Z Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle Anelie Guimarães, Diva Luz Ramos, Rosemar Mitio Ohashi, Otávio Wayne Garcia, Gary Gomes Vale, William Dasyprocta prymnolopha reproducción ciclo estral progesterona 17β-estradiol Amazonia brasileña reproduction estrous cycle progesterone Brazilian Amazon Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle. The agouti is a game animal that have been raised in captivity for conservation and sustainability purposes. However, the management of wild animals in an intensive breeding system requires an assertive knowledge of its reproductive parameters, one of the most important features for production improvement. Besides, little information is available regarding changes in reproductive hormone profiles in agouti. The objective of this study was to evaluate the hormonal profile of progesterone and 17β-estradiol during the estrous cycle of the agouti (Dasyprocta prymnolopha). The hormones were analyzed by radioimmunoassay. Blood samples were collected without sedation twice a week. The concentrations of progesterone were as follows: proestrus 0.78+0.39ng/ml, estrus 2.83+2.34ng/ml, metestrus 1.49+1.24ng/ml, diestrus 3.71+1.48ng/ml. In the estrous phase, an increase in the progesterone level was observed during a period of 24h. The average 17β-estradiol levels were as follows: proestrus 2 030.98+961.00pg/ml, estrus 1 910.56+650.54pg/ml, metestrus 1 724.83+767.28pg/ml, diestrus 1 939.94+725.29pg/ml. The current results suggest that the progesterone plasma concentration during the estrous cycle in the agouti has a similar increasing, stabilizing and decreasing pattern, as in domestic mammals. Agoutis have two phases of follicular development, as two periods of 17β-estradiol peaks were observed, the first one in the metestrus and the second during the proestrus. Spontaneous ovulation seems to occur after the progesterone peak, possibly indicating that this hormone is associated with the ovulatory process. A more detailed investigation is needed for better understanding of how progesterone influences ovulation. Studies on the involvement of progesterone in follicular rupture can be carried out, using steroid biosynthesis inhibitors and observing the effect of this hormone on ovarian activity of proteolytic enzymes in the follicular wall. Rev. Biol. Trop. 59 (1): 29-35. Epub 2011 March 01. Universidad de Costa Rica 2011-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/3176 10.15517/rbt.v59i1.3176 Revista de Biología Tropical; Vol. 59 No. 1 (2011): Volume 59 – Regular number 1 – March 2011; 29–35 Revista de Biología Tropical; Vol. 59 Núm. 1 (2011): Volumen 59 – Número regular 1 – Marzo 2011; 29–35 Revista Biología Tropical; Vol. 59 N.º 1 (2011): Volume 59 – Regular number 1 – March 2011; 29–35 2215-2075 0034-7744 10.15517/rbt.v59i1 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/3176/3082 Copyright (c) 2011 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Anelie Guimarães, Diva Luz Ramos, Rosemar Mitio Ohashi, Otávio Wayne Garcia, Gary Gomes Vale, William |
| spellingShingle |
Anelie Guimarães, Diva Luz Ramos, Rosemar Mitio Ohashi, Otávio Wayne Garcia, Gary Gomes Vale, William Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle |
| author_facet |
Anelie Guimarães, Diva Luz Ramos, Rosemar Mitio Ohashi, Otávio Wayne Garcia, Gary Gomes Vale, William |
| author_sort |
Anelie Guimarães, Diva |
| title |
Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle |
| title_short |
Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle |
| title_full |
Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle |
| title_fullStr |
Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle |
| title_full_unstemmed |
Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle |
| title_sort |
plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (dasyprocta prymnolopha) during the estrous cycle |
| title_alt |
Plasma concentration of progesterone and 17β-estradiol of black-rumped agouti (Dasyprocta prymnolopha) during the estrous cycle |
| publisher |
Universidad de Costa Rica |
| publishDate |
2011 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/3176 |
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