title: Urinary oestrogen and progesterone excretion before and during pregnancy in a pied bare-face tamarin (Saguinus bicolor bicolor).
abstract: Oestrone, oestradiol-17 beta and progesterone were measured by radioimmunoassay in daily urine samples after pairing and during subsequent pregnancy in a pied bare-face tamarin. On the basis of excretion profiles an ovarian cycle length of about 3 weeks and a gestation length of about 160 days are suggested. Oestrone was the predominant urinary oestrogen excreted by the non-pregnant and pregnant pied bare-face tamarin, the oestrone/oestradiol ratio being greater than 100:1. The results suggest that steroid monitoring can provide useful information about reproductive physiology in this species of tamarin.
mesh_terms: D000818:Animals; D002143:Callitrichinae / Q000652:urine*; D004958:Estradiol / Q000652:urine*; D004970:Estrone / Q000652:urine*; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000652:urine*; D011374:Progesterone / Q000652:urine*; D011863:Radioimmunoassay
chemical_list: D004970:Estrone; D011374:Progesterone; D004958:Estradiol