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- Die Regelschwellung ist eine Erscheinung bei verschiedenen weiblichen Primaten. Es handelt sich dabei um eine Schwellung des Genitalbereiches, die hormonell bedingt ist und den Männchen visuell die Paarungsbereitschaft der Weibchen signalisiert. Eine Regelschwellung findet man bei verschiedenen Primatengruppen, unter anderem bei den Pavianen und den Schimpansen. (de)
- Sexual swellings are enlarged areas of genital and perineal skin occurring in some female primates that vary in size over the course of the menstrual cycle. Thought to be an honest signal of fertility, male primates are attracted to these swellings; preferring, and competing for, females with the largest swellings. Though heavily investigated, the ultimate function of sexual swellings remains unknown. Over the last 50 years, eight principal explanations have been proposed, each claiming to account for the function of exaggerated swellings. Alone, however, no single hypothesis is believed to account for the function of sexual swellings; a combination of these theories may be more appropriate. In line with this ideal, the most recent account regarding the function of sexual swellings (the graded-signals hypothesis) combines several existing theories in the attempt to provide a more comprehensive account of sexual swellings. (en)
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