Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis

The evolution of bipedalism and reduced reliance on arboreality in hominins resulted in larger lower limb joints relative to the joints of the upper limb. The pattern and timing of this transition, however, remains unresolved. Here, we find the limb joint proportions of Australopithecus afarensis, H...

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Autores principales:	Anjali M Prabhat, Catherine K Miller, Thomas Cody Prang, Jeffrey Spear, Scott A Williams, Jeremy M DeSilva
Formato:	article
Lenguaje:	EN
Publicado:	eLife Sciences Publications Ltd 2021
Materias:	hominin bipedalism human evolution Australopithecus Homo Medicine R Science Q Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/f11f9574cf7b40189fc24f6af6fc5cf7
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id	oai:doaj.org-article:f11f9574cf7b40189fc24f6af6fc5cf7
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spelling	oai:doaj.org-article:f11f9574cf7b40189fc24f6af6fc5cf72021-11-16T14:03:39ZHomoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis10.7554/eLife.658972050-084Xe65897https://doaj.org/article/f11f9574cf7b40189fc24f6af6fc5cf72021-05-01T00:00:00Zhttps://elifesciences.org/articles/65897https://doaj.org/toc/2050-084XThe evolution of bipedalism and reduced reliance on arboreality in hominins resulted in larger lower limb joints relative to the joints of the upper limb. The pattern and timing of this transition, however, remains unresolved. Here, we find the limb joint proportions of Australopithecus afarensis, Homo erectus, and Homo naledi to resemble those of modern humans, whereas those of A. africanus, Australopithecus sediba, Paranthropus robustus, Paranthropus boisei, Homo habilis, and Homo floresiensis are more ape-like. The homology of limb joint proportions in A. afarensis and modern humans can only be explained by a series of evolutionary reversals irrespective of differing phylogenetic hypotheses. Thus, the independent evolution of modern human-like limb joint proportions in A. afarensis is a more parsimonious explanation. Overall, these results support an emerging perspective in hominin paleobiology that A. afarensis was the most terrestrially adapted australopith despite the importance of arboreality throughout much of early hominin evolution.Anjali M PrabhatCatherine K MillerThomas Cody PrangJeffrey SpearScott A WilliamsJeremy M DeSilvaeLife Sciences Publications Ltdarticlehomininbipedalismhuman evolutionAustralopithecusHomoMedicineRScienceQBiology (General)QH301-705.5ENeLife, Vol 10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hominin bipedalism human evolution Australopithecus Homo Medicine R Science Q Biology (General) QH301-705.5
spellingShingle	hominin bipedalism human evolution Australopithecus Homo Medicine R Science Q Biology (General) QH301-705.5 Anjali M Prabhat Catherine K Miller Thomas Cody Prang Jeffrey Spear Scott A Williams Jeremy M DeSilva Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis
description	The evolution of bipedalism and reduced reliance on arboreality in hominins resulted in larger lower limb joints relative to the joints of the upper limb. The pattern and timing of this transition, however, remains unresolved. Here, we find the limb joint proportions of Australopithecus afarensis, Homo erectus, and Homo naledi to resemble those of modern humans, whereas those of A. africanus, Australopithecus sediba, Paranthropus robustus, Paranthropus boisei, Homo habilis, and Homo floresiensis are more ape-like. The homology of limb joint proportions in A. afarensis and modern humans can only be explained by a series of evolutionary reversals irrespective of differing phylogenetic hypotheses. Thus, the independent evolution of modern human-like limb joint proportions in A. afarensis is a more parsimonious explanation. Overall, these results support an emerging perspective in hominin paleobiology that A. afarensis was the most terrestrially adapted australopith despite the importance of arboreality throughout much of early hominin evolution.
format	article
author	Anjali M Prabhat Catherine K Miller Thomas Cody Prang Jeffrey Spear Scott A Williams Jeremy M DeSilva
author_facet	Anjali M Prabhat Catherine K Miller Thomas Cody Prang Jeffrey Spear Scott A Williams Jeremy M DeSilva
author_sort	Anjali M Prabhat
title	Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis
title_short	Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis
title_full	Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis
title_fullStr	Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis
title_full_unstemmed	Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis
title_sort	homoplasy in the evolution of modern human-like joint proportions in australopithecus afarensis
publisher	eLife Sciences Publications Ltd
publishDate	2021
url	https://doaj.org/article/f11f9574cf7b40189fc24f6af6fc5cf7
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Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis

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