Publication: Gradual exacerbation of obstetric constraints during hominoid evolution implied by re-evaluation of cephalopelvic fit in chimpanzees
Gradual exacerbation of obstetric constraints during hominoid evolution implied by re-evaluation of cephalopelvic fit in chimpanzees
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Webb, N. M., Fornai, C., Krenn, V. A., Watson, L. M., Herbst, E. C., & Haeusler, M. (2024). Gradual exacerbation of obstetric constraints during hominoid evolution implied by re-evaluation of cephalopelvic fit in chimpanzees. Nature Ecology and Evolution, 8(12), 2228–2238. https://doi.org/10.1038/s41559-024-02558-7
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Under the obstetrical dilemma hypothesis, sexual dimorphism in pelvic shape is a solution to accommodate high fetopelvic constraints. It is therefore unclear why chimpanzees display a human-like pattern of pelvic sexual dimorphism despite having easier births enabled by small neonates and capacious pelvic canals. Here, we reassessed chimpanzee fetopelvic fit using 3D simulations, revealing a similarly constricted midpelvis as in humans, with even narrower outlet dimensions. Geometric morphometric analyses confirm that female chimpanze
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- Webb, Nicole M
- Fornai, Cinzia
- Krenn, Viktoria A
- Watson, Laura M
- Herbst, Eva C
- Haeusler, Martin
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Webb, N. M., Fornai, C., Krenn, V. A., Watson, L. M., Herbst, E. C., & Haeusler, M. (2024). Gradual exacerbation of obstetric constraints during hominoid evolution implied by re-evaluation of cephalopelvic fit in chimpanzees. Nature Ecology and Evolution, 8(12), 2228–2238. https://doi.org/10.1038/s41559-024-02558-7
