Postpartum Ovulation and Conception in Goeldi’s Monkey, Callimico goeldii

Determination of ovarian cycle in Goeldi's monkey (Callimico goeldii) via the measurement of steroids and peptides in plasma and urine

“…(Bonney et al, 1979), and the common marmoset Eastman et al, 1984). The profile of urinary excretion of oestrone-3-conjugates closely reflects that of oestrone-3-conjugates in the circulation, supporting the conclusions of previous studies based on urinary hormones only, that urinary oestrone-3-conjugates are high during the luteal phase (Ziegler et al, 1989(Ziegler et al, , 1990aCarroll et al, 1990). Furthermore, studies based on the profiles of reproductive peptides and steroids in the urine of the cotton-top tamarin (Ziegler et al, 1987), golden-lion tamarin (French et al, 1992) and pygmy marmoset (Ziegler et al, 1990b), also strongly suggest that oestrogen excretion is high in the luteal phase relative to the follicular phase in clawed New World monkeys.…”

“…Studies of this species in captivity have been concerned with reproductive behaviour (Beck et al, 1982;Carroll, 1982Carroll, , 1985 and various aspects of reproductive endocrinology. The data available on female reproductive endocrinology of Goeldi's monkey constitute descriptions of the ovarian cycle and of pregnancy based on the metabolites of reproductive steroid and peptide hormones in urine or faeces (Carroll et al, 1989(Carroll et al, , 1990Christen et al, 1989;Ziegler et al, 1989Ziegler et al, , 1990a Pryce and Döbeli, 1992; Jurke et al, in press).…”

Social Organization, Reproduction and Rearing Strategies of Callimico goeldii: New Clues from the Wild

“…Postpartum estrus in C. goeldii however allows rapid resumption of reproduction following parturition, making biannual birth seasons possible [31,33,56,57]. In the present study, the breeding female in the focal group had a biannual birth season with an interbirth interval of 165-180 days.…”

Urinary Excretion of Oestradiol-17β in the Female Cycle of Goeldi’s Monkeys (Callimico goeldii)

“…Although oestrone has hence been identi fied as the major oestrogen in urine samples of Goeldi's monkey [24,25], it was decided to investigate variation in oestradiol because a routine assay had been established for this hormone for a parallel study of common marmosets. It was hoped that meaningful results would be obtained for Goeldi's mon key despite the fact that oestradiol is only the secondary oestrogen in terms of urinary con centration.…”

“…Until recently [24,25] relatively lit tle had been published with respect to the reproductive endocrinology of Callimico. Although it has been suggested previously on behavioural grounds that the ovarian cycle in female Callimico has a duration of about 22-24 days [9,26], this was a very prelimi nary estimate.…”