Developmental covariation of human vault and base throughout postnatal ontogeny

Barbeito‐Andrés, Jimena; Ventrice, Fernando; Anzelmo, Marisol; Pucciarelli, Héctor Mário; Sardi, Marina Laura

doi:10.1016/j.aanat.2014.10.002

Cited by 17 publications

(28 citation statements)

References 56 publications

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“…The same approach was followed by Bastir et al (), to demonstrate that i) the b asicranium shape is influenced by both brain and facial size in both humans and non‐human primates, that ii) increased facial size corresponds to increased basicranial flexion, and that iii) a reverse relationship intervenes between the degree of cranial base flexion and relative brain size (Bastir et al, ), in keeping with the “spatial packing” hypothesis of cranial shape arrangement (Lieberman, ). Further studies addressing the issue of morphological integration in the primate skull by using GMM data used relative warp scores (Bastir & Rosas, ; Bookstein et al, ; Gkantidis & Halazonetis, ), PLS (Barbeito‐Andrés, Ventrice, Anzelmo, Pucciarelli, & Sardi, ; Bastir & Rosas, ; Bastir & Rosas, ; Gkantidis & Halazonetis, ; Makedonska, Wright, & Strait, ; McCane & Kean, ; Neaux, Guy, Gilissen, Coudyzer, & Ducrocq, ; Singh et al, ), spatially self‐similar processes (Bookstein, ) and the calculation of the RV coefficient (Bastir & Rosas, ; Neaux et al, ), applied to either 2D or 3D landmarks morphometrics. Since the publication of these studies, new statistical tools became available.…”

Section: Introductionmentioning

confidence: 99%

The evolution of cranial base and face in Cercopithecoidea and Hominoidea: Modularity and morphological integration

Profico

Piras

Buzi

et al. 2017

American J Primatol

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The evolutionary relationship between the base and face of the cranium is a major topic of interest in primatology. Such areas of the skull possibly respond to different selective pressures. Yet, they are often said to be tightly integrated. In this paper, we analyzed shape variability in the cranial base and the facial complex in Cercopithecoidea and Hominoidea. We used a landmark-based approach to single out the effects of size (evolutionary allometry), morphological integration, modularity, and phylogeny (under Brownian motion) on skull shape variability. Our results demonstrate that the cranial base and the facial complex exhibit different responses to different factors, which produces a little degree of morphological integration between them. Facial shape variation appears primarily influenced by body size and sexual dimorphism, whereas the cranial base is mostly influenced by functional factors. The different adaptations affecting the two modules suggest they are best studied as separate and independent units, and that-at least when dealing with Catarrhines-caution must be posed with the notion of strong cranial integration that is commonly invoked for the evolution of their skull shape.

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Section: Introductionmentioning

confidence: 99%

The evolution of cranial base and face in Cercopithecoidea and Hominoidea: Modularity and morphological integration

Profico

Piras

Buzi

et al. 2017

American J Primatol

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“…Tensional forces promoted by the brain stimulate osteogenetic activity on sutures, influencing their patency and, therefore, overall skull shape (Opperman et al, ). Shape changes of the vault related to brain ontogeny involve antero‐posterior elongation, relative narrowing, shortening of the distance between bregma and vertex, and compression of the parietal superior area (Enlow and Hans, ; Moss, ; Moss and Young, ; Opperman et al, ; Sperber, ; Ventrice, ; Barbeito‐Andrés et al, ). The influence of the growing brain on bones has been also demonstrated by the study of certain pathologies such as anencephaly (Dambska et al, ; Frey and Hauser, ; Zhao et al, ), hydrocephaly (Morimoto et al, ), microcephaly (Chervenak et al, ), and craniosynostosis (premature closure of cranial sutures) (Richtsmeier et al, ).…”

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confidence: 99%

Ontogenetic changes in cranial vault thickness in a modern sample of Homo sapiens

Anzelmo

Ventrice

Barbeito‐Andrés

et al. 2014

American J Hum Biol

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“…The timing and patterning of brain growth is known to play an important role in neurocranial development (Barbeito‐Andrés et al, ). Previous studies have suggested that the occipital bun/hemi‐bun develops in response to growth of the cerebellum (Geist, ) or the primary visual cortex (Cartmill & Smith, ).…”

Section: Discussionmentioning

confidence: 99%

“…In order to assess patterns of morphological covariation related to occipital hemi‐bun development, a combination of linear and geometric morphometric measurements were used. Two‐block partial least squares analysis (2B‐PLS), which uses singular value decomposition to analyze patterns of covariation between blocks of data, was performed to assess patterns of cranial covariation (Baab, Mcnulty, & Rohlf, ; Barbeito‐Andrés, Ventrice, Anzelmo, Pucciarelli, & Sardi, ; Bookstein, ; Zelditch, Swiderski, & Sheets, ). This analysis is a valuable tool for geometric morphometric studies, including those which use semi‐landmarks, because the number of shape variables is allowed to exceed the number of examined specimens (Zelditch et al, ).…”

Section: Methodsmentioning

confidence: 99%

Occipital hemi‐bun development and shape covariation in a longitudinal extant human growth sample

Karban

2019

American J Phys Anthropol

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Objectives: Although the homology of the Neanderthal occipital bun and anatomically modern human "hemi-bun" has long been debated, little is known about the developmental timing and patterning of these two patterns of prominent occipital squama convexity. In this study, occipital hemi-bun ontogeny and cranial shape covariation are assessed in a comparative extant human sample.Materials and Methods: Two-dimensional geometric morphometric methods were used to investigate hemi-bun development in a longitudinal sample of growth study cephalograms representing extant human subjects predominantly of European ancestry. Subjects were each measured at three distinct age points, ranging from 3.0 to 20.4 years, and two-block partial least squares analysis was used to assess patterns of covariation between midsagittal occipital bone morphology and other aspects of craniofacial shape.Results: Occipital hemi-bun morphology, when present, was found to develop early in ontogeny, in association with anteroposterior elongation of the frontal and parietal bones. No significant pattern of covariation was found between occipital hemi-bun shape and cranial/basicranial breadth, basicranial length, basicranial angle, or midfacial prognathism.Discussion: This study suggests that the occipital hemi-bun, at least in this extant human population, should not be considered an independent trait, as its development is closely linked to shape variation in the frontal and parietal bones. Importantly, these results suggest that occipital hemi-bun morphology is not significantly influenced by basicranial morphology during development, but instead covaries with changes in midsagittal neurocranial vault shape. K E Y W O R D S chignon, cranial development, occipital bun, ontogeny, shape covariation

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Developmental covariation of human vault and base throughout postnatal ontogeny

Cited by 17 publications

References 56 publications

The evolution of cranial base and face in Cercopithecoidea and Hominoidea: Modularity and morphological integration

The evolution of cranial base and face in Cercopithecoidea and Hominoidea: Modularity and morphological integration

Ontogenetic changes in cranial vault thickness in a modern sample of Homo sapiens

Occipital hemi‐bun development and shape covariation in a longitudinal extant human growth sample

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