Ovarian activity of Agouti paca (Rodentia: Agoutidae) under captivity.
Actividad ovárica del tepezcuintle Agouti paca (Rodentia: Agoutidae) en cautiverio
| dc.creator | Montes Pérez, Rubén C. | |
| dc.creator | Cabrera Baz, Elsy A. | |
| dc.date | 2014-03-04 | |
| dc.date.accessioned | 2016-05-03T15:29:04Z | |
| dc.date.available | 2016-05-03T15:29:04Z | |
| dc.identifier | http://revistas.ucr.ac.cr/index.php/rbt/article/view/13687 | |
| dc.identifier | 10.15517/rbt.v54i3.13687 | |
| dc.identifier.uri | https://hdl.handle.net/10669/26546 | |
| dc.description | The ovarian activity of Agouti paca was characterized by hormonal profiles and ovarian structures. Samples of blood were taken from eight females (seven adults and one juvenile) at the breeding grounds of the Facultad de Medicina Veterinaria y Zootecnia in Yucatán, México. Sampling lasted approximately two months and was done every three and six days. Blood was collected from anesthetized animals, and the levels of progesterone (P4) and 17 β estradiol (E2) were analized by radioimmunoassay technique. Macroscopic and microscopic analyses were carried out in ovaries of dead animals. The estrous cycle lasted 29±8.4 days, levels of 1.61±0.65 ng/ml for P4 and 39±24 pg/ml for E2 were observed for a follicular phase, 6.18±3.70 ng/ml and 29±16 pg/ml for P4 and E2 respectively in the luteal phase. Statistically significant differences were found between phases for P4 but not for E2. The presence of extragonadal steroids with levels of P4 of 1.9±0.77 ng/ml and E2 of 22±17 pg/ml were observed, which arenot produced by the effects of managing stress. The changes in the levels of P4 during the cycle are indicatorsof luteal activity, with the intersticial tissue acting probably as active steroids-producing gland.Follicular growthwas observed during the entire cycle. | en-US |
| dc.description | Se caracterizó la actividad ovárica de A. paca por medio de perfiles hormonales y estructuras ováricas. Se muestrearon ocho hembras (siete adultas y una juvenil) en el criadero de la Facultad de Medicina Veterinaria y Zootecnia en el estado de Yucatán, México, durante aproximadamente dos meses. Se recolectaron muestras sanguíneas cada 3 y 6 días en animales anestesiados. Se estimaron los niveles de progesterona (P4) y 17 β estradiol (E2) sanguíneos por radioinmunoanálisis. Las estructuras ováricas de animales muertos durante el periodo de muestreo fueron analizadas macro y microscópicamente. El ciclo ovárico duró 29±8.4 días, con niveles de1.61±0.65 ng/ml para P4 y de 39±24 pg/ml para E2 durante la fase folicular, y de 6.18±3.70 ng/ml y 29±16 pg/ml para P4 y E2 respectivamente, en la fase luteal. Hubo diferencias (p<0.05) en los niveles de P4 entre las fases folicular y luteal, no así para E2. Se detectó la presencia de esteroides extragonadales, con niveles de 1.9±0.77 ng/ml para P4 y de 22±17 pg/ml para E2, los cuales no son secretados por efecto del estrés por manejo. Los cambios en los niveles de P4 durante el ciclo son indicadores de actividad luteal, funcionando el tejido intersticial probablemente como una glándula productora de esteroides. De igual forma se observó que el crecimiento folicular ocurre durante todo el ciclo. | es-ES |
| dc.format | application/pdf | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.language | spa | |
| dc.publisher | Universidad de Costa Rica | en-US |
| dc.relation | http://revistas.ucr.ac.cr/index.php/rbt/article/view/13687/13008 | |
| dc.rights | Copyright (c) 2014 International Journal of Tropical Biology and Conservation | en-US |
| dc.source | Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 54 (3) September 2006; 903-912 | en-US |
| dc.source | Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 54 (3) September 2006; 903-912 | es-ES |
| dc.source | Revista Biología Tropical; Vol. 54 (3) September 2006; 903-912 | pt-PT |
| dc.source | 2215-2075 | |
| dc.source | 0034-7744 | |
| dc.source | 10.15517/rbt.v54i3 | |
| dc.title | Ovarian activity of Agouti paca (Rodentia: Agoutidae) under captivity. | en-US |
| dc.title | Actividad ovárica del tepezcuintle Agouti paca (Rodentia: Agoutidae) en cautiverio | es-ES |
| dc.type | artículo original |
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Revista de Biología Tropical [2107]