期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 116, 期 5, 页码 1633-1638出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1808659116
关键词
facial masculinity; MHC heterozygosity; sexual selection; immunocompetence handicap hypothesis; human evolution
资金
- Penn State Center for Human Evolution and Diversity (CHED)
- Research Fund KU Leuven (Grant BOF-C1) [C14/15/081]
- Research Program of the Fund for Scientific Research-Flanders (Belgium) (Grant FWO) [G078518N]
Recent studies have called into question the idea that facial masculinity is a condition-dependent male ornament that indicates immunocompetence in humans. We add to this growing body of research by calculating an objective measure of facial masculinity/femininity using 3D images in a large sample (n = 1,233) of people of European ancestry. We show that facial masculinity is positively correlated with adult height in both males and females. However, facial masculinity scales with growth similarly in males and females, suggesting that facial masculinity is not exclusively a male ornament, as male ornaments are typically more sensitive to growth in males compared with females. Additionally, we measured immunocompetence via heterozygosity at the major histocompatibility complex (MHC), a widely-used genetic marker of immunity. We show that, while height is positively correlated with MHC heterozygosity, facial masculinity is not. Thus, facial masculinity does not reflect immunocompetence measured by MHC heterozygosity in humans. Overall, we find no support for the idea that facial masculinity is a condition-dependent male ornament that has evolved to indicate immunocompetence.
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