Abstract:
:Recent molecular and morphological surveys suggest that mangabeys do not represent a monophyletic group. Specifically, Cercocebus is the sister taxon of Mandrillus, whereas Lophocebus forms an unresolved trichotomy with Papio and Theropithecus. The Cercocebus-Mandrillus clade is characterized by skeletal and dental adaptations related to acquisition and processing of hard-object foods that resist decomposition for months on the forest floor. Although species of both mangabey genera can be described as frugivorous seed predators with a strong reliance on hard-object foods, a growing body of evidence indicates that Cercocebus (terrestrial) and Lophocebus (arboreal) mangabeys differ in the hardness of the seeds they consume and the manner in which seeds are processed. The taxa are also distinguished on the basis of dental morphology. Given the purported differences in feeding behaviors of the two mangabey genera, we consider whether there are predictable biomechanical consequences of these behaviors that are reflected in mandibular corpus dimensions. In addition, we present metric data summarizing functional aspects of mangabey mandibular corpus morphology. Mangabey genera are generally not distinguished by differences in relative corpus size, either in postcanine or symphyseal regions. Distinct symphyseal scaling patterns characterize the Papio-Lophocebus clade and the Mandrillus-Cercocebus clade, while the postcanine corpus scales similarly between them. The hypothesis that preferential use of the incisors vs. premolars to initially process these foods results in distinct stress environments is weakly supported, given circumstantial evidence that the relative importance of bending vs. torsion may differ between Cercocebus and Lophocebus.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Daegling DJ,McGraw WSdoi
10.1002/ajpa.20621subject
Has Abstractpub_date
2007-09-01 00:00:00pages
50-62issue
1eissn
0002-9483issn
1096-8644journal_volume
134pub_type
杂志文章abstract:OBJECTIVES:It is a big challenge to diagnose the motives behind trepanations in prehistoric crania. Surgical-therapeutic attempts may be apparent by the presence of fractures, however, ritual or nonmedical motives are rarely supported by visible evidence in the bones. This article presents data on the trepanations of s...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.22996
更新日期:2016-08-01 00:00:00
abstract::Three groups of children, those of European parentage, those of Guatemalan parentage, and those of mixed European-Guatemalan parentage were measured for height, weight, and skeletal maturity. The children were born between 1945 and 1965, they were all of high socioeconomic status, and they all attended the same privat...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330590409
更新日期:1982-12-01 00:00:00
abstract:OBJECTIVES:To determine whether (1) maximal handgrip strength (HGS) is associated with inter-island level of economic development in Vanuatu, (2) how associations between island of residence and HGS are mediated by age, sex, body size/composition, and individual sociodeomographic variation, and (3) whether HGS is predi...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23704
更新日期:2018-12-01 00:00:00
abstract::Predation is proposed to be one of the most important factors influencing the evolution of mammalian societies. Although predation risk is thought to influence both the behavior and grouping patterns of most diurnal primates, evidence supporting this hypothesis is still limited. The spatial and temporal patterns of mi...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22230
更新日期:2013-04-01 00:00:00
abstract::The control region of mitochondrial DNA has been widely studied in various human populations. This paper reports sequence data for hypervariable segments 1 and 2 of the control region from a population from southern Tuscany (Italy). The results confirm the high variability of the control region, with 43 different hapl...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199608)100:4<443::AID-AJPA
更新日期:1996-08-01 00:00:00
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journal_title:American journal of physical anthropology
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pub_type: 历史文章,杂志文章
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更新日期:2002-11-01 00:00:00
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journal_title:American journal of physical anthropology
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doi:10.1002/ajpa.23334
更新日期:2018-01-01 00:00:00
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更新日期:1976-09-01 00:00:00
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pub_type: 杂志文章
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更新日期:2001-01-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330530410
更新日期:1980-11-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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更新日期:2005-07-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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更新日期:2009-12-01 00:00:00
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journal_title:American journal of physical anthropology
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更新日期:2009-03-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20744
更新日期:2008-03-01 00:00:00
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更新日期:2001-12-01 00:00:00
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journal_title:American journal of physical anthropology
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更新日期:2009-10-01 00:00:00
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更新日期:1980-01-01 00:00:00
abstract::Seasonal change in time spent for terrestrial behavior of chimpanzees was investigated from the viewpoint of the distribution of food and microclimate in the forest at Bossou, Guinea, West Africa. Daily and monthly data for activity budgets of three focal animals, climatic variables in the forest, and indices of fruit...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
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更新日期:2004-05-01 00:00:00
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pub_type: 杂志文章
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更新日期:2013-08-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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更新日期:1992-05-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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更新日期:2018-08-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章,评审
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更新日期:1997-05-01 00:00:00
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journal_title:American journal of physical anthropology
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更新日期:2012-05-01 00:00:00
abstract::Temporal changes, within-group variation, and phylogenetic positions of the Early Pleistocene Javanese hominids remain unclear. Recent debate focused on the age of the oldest Javanese hominids, but the argument so far includes little morphological basis for the fossils. To approach these questions, we analyzed a compr...
journal_title:American journal of physical anthropology
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更新日期:2005-12-01 00:00:00
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pub_type: 历史文章,杂志文章
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更新日期:1981-05-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
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更新日期:2009-08-01 00:00:00
abstract::Dentitions of 208 prehistoric skeletal specimens from five geographic regions of Oregon were studied to describe their dental status. Comparisons were made of the incidence of specific pathologies among regions and between jaws. Maxillary premortem tooth losses were significantly higher than mandibular tooth loss. A r...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
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更新日期:1986-03-01 00:00:00
abstract::Variation in recent human mandibular form is often thought to reflect differences in masticatory behavior associated with variation in food preparation and subsistence strategies. Nevertheless, while mandibular variation in some human comparisons appear to reflect differences in functional loading, other comparisons i...
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更新日期:2014-03-01 00:00:00