HIGHLIGHTS
- who: Ruth Sonnweber and collaborators from the Department of and Cognitive Biology, University of Vienna, Djerassiplatz, Vienna, Austria have published the research: Plasma Testosterone and Androstenedione Levels Follow the Same Sex-Specific Patterns in the Two Pan Species, in the Journal: (JOURNAL)
- what: Apes were never anaesthetized for the purpose of this study. The authors investigated the plasma levels of two androgens, testosterone and androstenedione, in zoo-housed bonobos and chimpanzees. Like in spotted hyenas , and ring-tailed lemurs (e_g, ), female bonobos in the study had higher plasma androstenedione levels than male bonobos.
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