Die Faeder-Männchen sehen wie Weibchen aus und können sich unbemerkt in die Balzarena einschleichen. Ein Superenzym baut Testosteron direkt in ihrem Blut ab. So zirkuliert wenig Testosteron im Körper, im Hoden gibt es aber genug zur Spermienproduktion.
© MPI für biologische Intelligenz / Axel Griesch
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