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A composite menstrual cycle of captive orangutans, with associated hormonal and behavioral variability

Lara S Durgavich1, Faye S Harwell1, Cheryl D Knott1,2

  • 1Anthropology Department, Boston University, Boston, Massachusetts, USA.

American Journal of Primatology
|July 20, 2022
PubMed
Summary

This study measured ovarian hormones in female orangutans, establishing a baseline menstrual cycle and finding mating is most common during ovulation, but hormone levels don't consistently predict mating behavior.

Keywords:
concealed ovulationmenstrual cycleorangutanovarian functionsexual behavior

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