Urinary steroid hormone analysis of ovarian cycles and pregnancy in mandrills (Mandrillus sphinx) indicate that menses, copulatory behavior, sexual swellings and reproductive condition are associated with changing estrone conjugates (E1C) and pregnanediol-3-glucuronide (PdG)
Abstract 10.1002/zoo.20192.abs The objective of this study was to determine if sexual swellings in mandrills (Mandrillus sphinx) are a reflection of reproductive endocrine state. Urine samples were assayed using an enzyme immunoassay measuring pregnanediol-3-glucuronide (PdG) and estrone conjugates (E1C). Hormone patterns of ovarian cycles, pregnancy and lactation were characterized and compared with sexual swellings and […]
Effective suppression of ovarian cyclicity in the lowland gorilla with an oral contraceptive
Abstract 10.1002/zoo.1430110406.abs To determine the effects of a human oral contraceptive on normal and abnormal reproductive endocrine patterns in two lowland gorillas (Gorilla gorilla), daily urine samples were analyzed by radioimmunoassay for estrone conjugates (EC) and pregnanediol-3-glucuronide (PdG). During a pre-treatment period one female (F1) demonstrated regular menstrual cycles averaging 27.6 ± 1.8 days, whereas […]
Assessing reproductive status in orang-utans by using urinary estrone
Abstract 10.1002/zoo.1430100303.abs The aim of this work was to compare normal menstrual cycle patterns of urinary estrone excretion in orang-utans with those of an orang-utan in her late 40s, an orang-utan before and after rehabilitation for anorexia, and an orang-utan during prolonged lactation. A detailed menstrual and sexual activity record was kept for each orang-utan […]
Sex differences and reproductive hormone influences on human odor perception
The question of whether men and women differ in their ability to smell has been the topic of scientific investigation for over a hundred years. Although conflicting findings abound, most studies suggest that, for at least some odorants, women outperform men on tests of odor detection, identification, discrimination, and memory. Most functional imaging and electrophysiological […]
Body Temperature and Physical Activity Correlates of the Menstrual Cycle in Chacma Baboons (Papio hamadryas ursinus)
We investigated the temporal relationship between abdominal temperature, physical activity, perineal swelling, and urinary progesterone and estradiol concentrations over the menstrual cycle in unrestrained captive baboons. Using a miniature temperature-sensitive data logger surgically implanted in the abdominal cavity and an activity data logger implanted subcutaneously on the trunk, we measured, continuously over 6 months at […]