Unexpectedly rapid evolution of mandibular shape in hominins

Abstract Members of the hominins – namely the so-called ‘australopiths’ and the species of the genus Homo – are known to possess short and deep mandibles and relatively small incisors and canines. It is commonly assumed that this suite of traits evolved in early members of the clade in response to c...

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Autores principales:	P. Raia, M. Boggioni, F. Carotenuto, S. Castiglione, M. Di Febbraro, F. Di Vincenzo, M. Melchionna, A. Mondanaro, A. Papini, A. Profico, C. Serio, A. Veneziano, V. A. Vero, L. Rook, C. Meloro, G. Manzi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6f327660096f4000841f93993113cb7f
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spelling	oai:doaj.org-article:6f327660096f4000841f93993113cb7f2021-12-02T16:08:16ZUnexpectedly rapid evolution of mandibular shape in hominins10.1038/s41598-018-25309-82045-2322https://doaj.org/article/6f327660096f4000841f93993113cb7f2018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25309-8https://doaj.org/toc/2045-2322Abstract Members of the hominins – namely the so-called ‘australopiths’ and the species of the genus Homo – are known to possess short and deep mandibles and relatively small incisors and canines. It is commonly assumed that this suite of traits evolved in early members of the clade in response to changing environmental conditions and increased consumption of though food items. With the emergence of Homo, the functional meaning of mandible shape variation is thought to have been weakened by technological advancements and (later) by the control over fire. In contrast to this expectation, we found that mandible shape evolution in hominins is exceptionally rapid as compared to any other primate clade, and that the direction and rate of shape change (from the ape ancestor) are no different between the australopiths and Homo. We deem several factors including the loss of honing complex, canine reduction, and the acquisition of different diets may have concurred in producing such surprisingly high evolutionary rates. This study reveals the evolution of mandibular shape in hominins has strong morpho-functional and ecological significance attached.P. RaiaM. BoggioniF. CarotenutoS. CastiglioneM. Di FebbraroF. Di VincenzoM. MelchionnaA. MondanaroA. PapiniA. ProficoC. SerioA. VenezianoV. A. VeroL. RookC. MeloroG. ManziNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q P. Raia M. Boggioni F. Carotenuto S. Castiglione M. Di Febbraro F. Di Vincenzo M. Melchionna A. Mondanaro A. Papini A. Profico C. Serio A. Veneziano V. A. Vero L. Rook C. Meloro G. Manzi Unexpectedly rapid evolution of mandibular shape in hominins
description	Abstract Members of the hominins – namely the so-called ‘australopiths’ and the species of the genus Homo – are known to possess short and deep mandibles and relatively small incisors and canines. It is commonly assumed that this suite of traits evolved in early members of the clade in response to changing environmental conditions and increased consumption of though food items. With the emergence of Homo, the functional meaning of mandible shape variation is thought to have been weakened by technological advancements and (later) by the control over fire. In contrast to this expectation, we found that mandible shape evolution in hominins is exceptionally rapid as compared to any other primate clade, and that the direction and rate of shape change (from the ape ancestor) are no different between the australopiths and Homo. We deem several factors including the loss of honing complex, canine reduction, and the acquisition of different diets may have concurred in producing such surprisingly high evolutionary rates. This study reveals the evolution of mandibular shape in hominins has strong morpho-functional and ecological significance attached.
format	article
author	P. Raia M. Boggioni F. Carotenuto S. Castiglione M. Di Febbraro F. Di Vincenzo M. Melchionna A. Mondanaro A. Papini A. Profico C. Serio A. Veneziano V. A. Vero L. Rook C. Meloro G. Manzi
author_facet	P. Raia M. Boggioni F. Carotenuto S. Castiglione M. Di Febbraro F. Di Vincenzo M. Melchionna A. Mondanaro A. Papini A. Profico C. Serio A. Veneziano V. A. Vero L. Rook C. Meloro G. Manzi
author_sort	P. Raia
title	Unexpectedly rapid evolution of mandibular shape in hominins
title_short	Unexpectedly rapid evolution of mandibular shape in hominins
title_full	Unexpectedly rapid evolution of mandibular shape in hominins
title_fullStr	Unexpectedly rapid evolution of mandibular shape in hominins
title_full_unstemmed	Unexpectedly rapid evolution of mandibular shape in hominins
title_sort	unexpectedly rapid evolution of mandibular shape in hominins
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/6f327660096f4000841f93993113cb7f
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Unexpectedly rapid evolution of mandibular shape in hominins

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