RHYTHMIC CHANGES IN THE COPULATORY FREQUENCY OF RHESUS MONKEYS (MACACA MULATTA) IN RELATION TO THE MENSTRUAL CYCLE AND A COMPARISON WITH THE HUMAN CYCLE

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Authors:
R. P. MICHAEL
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D. ZUMPE
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DOI:
https://doi.org/10.1530/jrf.0.0210199
Volume/Issue:
Volume 21: Issue 1
Page Range:
199–201
Article Type:
Research Article
Online Publication Date:
Feb 1970
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Summary.

The frequency of ejaculation in thirty-two pairs of rhesus monkeys studied during seventy-five menstrual cycles was significantly higher (P<0·001) in the follicular than in the luteal phase of the cycle: this pattern was closely similar to the changes in the incidence of sexual intercourse reported in a human population.

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Print ISSN:
1470-1626
Online ISSN:
1741-7899