Annual variations in sexual hormones and births' frequency in female stump-tailed macaques (Macaca arctoides)
| Autor: | Ricardo Mondragón-Ceballos, M.D. García-Granados, Leonor Hernández-López, G. Matamoros-Trejo |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Macaca arctoides media_common.quotation_subject 010603 evolutionary biology 01 natural sciences Macaque Sexual Behavior Animal Food Animals biology.animal Long period medicine Animals 0501 psychology and cognitive sciences Primate 050102 behavioral science & comparative psychology Mating Gonadal Steroid Hormones Small Animals media_common biology Equine 05 social sciences Seasonality medicine.disease biology.organism_classification Sexual hormones Macaca Regression Analysis Female Animal Science and Zoology Seasons Reproduction Demography |
| Zdroj: | Theriogenology. 108:201-206 |
| ISSN: | 0093-691X |
| DOI: | 10.1016/j.theriogenology.2017.11.013 |
| Popis: | Although the breeding seasonality in Macaca arctoides have been studied over a long period of time, it is still controversial whether reproduction in this primate tend to increase during certain months of the year as it happens in most of the macaque species. Many authors have classified Macaca arctoides as not being seasonal species. Nonetheless, there were no reports, about seasonal variations of female sexual hormones to demonstrate that asseveration. Therefore, in the present study we collect 1611 fecal samples from June 2009 to November 2010 from 10 female stump-tailed macaques to measure 17β-estradiol and progesterone concentrations. Also, we included the birth frequency per year, in order to identify if sexual hormones peaked at a certain period of the year, thus, births would be occurring six months later according to the gestation length of stump-tailed macaques. Our results indicate two mating seasons per year in stump-tailed macaques: one in July-August and a second one in November. The distribution of the birth frequency, throughout the year support these results. We conclude that stump-tail macaques have a discrete seasonality no different than most of macaques' species. |
| Databáze: | OpenAIRE |
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