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Ovulation in the marmoset monkey: endocrinology, prediction and detection
The Journal of Endocrinology
|October 1, 1984
Summary
Measuring oestrone-3-sulphate levels offers a practical method for predicting ovulation in marmosets. This hormone shows a preovulatory rise, unlike other tested hormones, making it useful for timing reproductive events.
Area of Science:
- Reproductive biology
- Primate endocrinology
- Comparative physiology
Background:
- Accurate prediction of ovulation is crucial for reproductive studies in marmosets (Callithrix jacchus).
- Previous methods for ovulation prediction in marmosets have limitations in practicality and timing.
Purpose of the Study:
- To evaluate the utility of various hormones for predicting ovulation in female marmosets.
- To identify a practical and reliable hormonal marker for preovulatory timing in this species.
Main Methods:
- Measurement of circulating progesterone, oestradiol-17 beta, luteinizing hormone (LH), total oestrone, unconjugated oestrone, and oestrone-3-sulphate over the periovulatory period.
- Assessing the temporal relationship of hormone level changes to the estimated day of ovulation.
Main Results:
- Progesterone levels increased post-ovulation, useful for retrospective detection.
- Oestradiol-17 beta and LH showed preovulatory rises but were impractical for prediction due to assay requirements.
- Oestrone-3-sulphate levels increased at least one day before ovulation in most animals, indicating predictive potential.
Conclusions:
- Oestrone-3-sulphate is a practical and reliable marker for predicting ovulation in marmosets.
- Rapid direct assays for oestrone-3-sulphate facilitate timely reproductive management and research in this species.