Food mechanical properties and dietary ecology.

abstract：:The "Kleiber relationship" describes the interspecific allometry between body size and metabolism. Like other allometric relationships, the Kleiber relationship not only summarizes scaling effects across species but also provides a standard by which species can be compared. One well-noted deviation from the Kleiber re...

journal_title：American journal of physical anthropology

authors： Kurland JA,Pearson JD

更新日期：1986-12-01 00:00:00

abstract：OBJECTIVES:Interbirth intervals (IBIs) are a key metric of female reproductive success; understanding how they are regulated by environmental, social, and demographic factors can provide insight into sources of variance in female fitness. MATERIALS AND METHODS:Using 36 years of reproductive data on 490 IBIs for 160 wi...

journal_title：American journal of physical anthropology

authors： Gesquiere LR,Altmann J,Archie EA,Alberts SC

更新日期：2018-05-01 00:00:00

abstract：:It is well established that some observed patterns of force production in the primate masticatory system match those predicted by a simplified lever model. This model is also commonly invoked in adaptive explanations of craniodental diversity. However, systematic studies of the predictive power of this model are missi...

journal_title：American journal of physical anthropology

authors： Spencer MA

更新日期：1999-04-01 00:00:00

abstract：:A number of researchers have hypothesized that the biomechanical forces associated with cultural cranial deformation can influence the formation of sutural ossicles. However, it is still difficult to make definitive conclusions about this relationship because the effects appear to be quite weak, and contradictory resu...

journal_title：American journal of physical anthropology

authors： Wilczak CA,Ousley SD

更新日期：2009-08-01 00:00:00

abstract：:Although it is commonly stated that the ischia of the late Pliocence-early Pleistocene hominid fossils are long and ape-like, new interpretations show this view to be falacious. An important new theory proposed by Robinson concludes that the gracile form of early hominid was an efficient biped, but the robust form was...

journal_title：American journal of physical anthropology

authors： McHenry HM

更新日期：1975-07-01 00:00:00

abstract：OBJECTIVES:A variety of mechanical processes can result in antemortem dental chipping. In this study, chipping data in the teeth of Homo naledi are compared with those of other pertinent dental samples to give insight into their etiology. MATERIALS AND METHODS:Permanent teeth with complete crowns evidencing occlusal w...

journal_title：American journal of physical anthropology

authors： Towle I,Irish JD,De Groote I

更新日期：2017-09-01 00:00:00

abstract：:In this paper we discuss diet and health changes of millet agriculturists in Northern China, Shaanxi province, during the period 7,000-4,000 BP. An episode of intensive climatic oscillations that preceded the onset of colder climate circa the fifth millennium BP divides the period (Shi et al. [1993] Global Planet. Cha...

journal_title：American journal of physical anthropology

authors： Pechenkina EA,Benfer RA Jr,Zhijun W

更新日期：2002-01-01 00:00:00

abstract：:It is often suggested that the frontal sinus morphology of no two individuals is alike, and that the configuration of the frontal sinus is as unique to an individual as his or her fingerprints. However, no empirical, quantitative testing of the uniqueness of frontal sinus outlines has ever been performed. Such testing...

journal_title：American journal of physical anthropology

authors： Christensen AM

更新日期：2005-07-01 00:00:00

abstract：:Excessive central fat in children and adolescents is a risk factor for cardiovascular and metabolic disorders. This study aimed to compare the body fat distribution patterns of children and adolescents in Abeokuta, Nigeria with international reference standards. Five hundred seventy children aged 5 to 19 years were se...

journal_title：American journal of physical anthropology

authors： Senbanjo IO,Oshikoya KA,Olutekunbi OA,Njokanma OF

更新日期：2013-04-01 00:00:00

abstract：:Height and weight were compared across five birth decades (1850-1899) among 1,121 Harvard athletes who were lettermen in various sports. There were considerable differences in the magnitude of the secular trend among the sport categories (crew, baseball, football, track, ice hockey, and two or more sports). Comparing ...

journal_title：American journal of physical anthropology

authors： Polednak AP

更新日期：1975-05-01 00:00:00

abstract：:This article presents the results of a study of infant diet at two Iron Age sites on the island of Öland, Sweden. The cemetery at Bjärby contained a large number of subadults who had survived the earliest years of life, whereas most individuals at Triberga had died by 6 months of age. To investigate whether difference...

journal_title：American journal of physical anthropology

authors： Howcroft R,Eriksson G,Lidén K

更新日期：2012-10-01 00:00:00

abstract：:A histological aging study of femoral midshafts in a late Roman period sample from the Dakhleh Oasis, Egypt, showed discrete fluorochrome labelling. The fluorochrome is yellow-green in colour and fluoresces at a wavelength of 525 nm. The labelling occurs at the mineralization fronts and is so distinct that several his...

journal_title：American journal of physical anthropology

authors： Cook M,Molto E,Anderson C

更新日期：1989-10-01 00:00:00

abstract：:Recent research shows that a bacterial life form, Erysipelothrix insidiosa, can produce rheumatoid arthritis in deer, swine, and dogs, and that a number of animals, including man, birds, and fish, may be infected by the organism. Examination of the archaeological record suggests that both cultural and biological varia...

journal_title：American journal of physical anthropology

authors： Hudson C,Butler R,Sikes D

更新日期：1975-07-01 00:00:00

abstract：:A model is developed that treats migration rates among populations as a function of the geographic distance between them and the size of both sources and recipient population. Specifically, mij/mjj = a(Ni/Nj)pe-bd, where mij/mjj is the relative migration rate into population j from population i, Ni is the size of the ...

journal_title：American journal of physical anthropology

authors： Relethford JH

更新日期：1992-12-01 00:00:00

abstract：OBJECTIVES:Vertical clinging and climbing have been integral to hypotheses about primate origins, yet little is known about how an animal with nails instead of claws resists gravity while on large, vertical, and cylindrical substrates. Here we test models of how force is applied to maintain posture, predicting (1) the ...

journal_title：American journal of physical anthropology

authors： Johnson LE,Hanna J,Schmitt D

更新日期：2015-11-01 00:00:00

abstract：:The rise of two sub-specialties in Physical Antrhopology traces back to the Anatomy Departments of Schools of Medicine in Germany and France during the nineteenth century. The study of human diversity in bones and bodies was largely by medically-trained anatomists. There developed Medical Antropology and Dental Anthro...

journal_title：American journal of physical anthropology

authors： Krogman WM

更新日期：1976-11-01 00:00:00

abstract：:One trait that distinguishes the walking gaits of most primates from those of most mammalian nonprimates is the distribution of weight between the forelimbs and hindlimbs. Nonprimate mammals generally experience higher vertical peak substrate reaction forces on the forelimb than on the hindlimb. Primates, in contrast,...

journal_title：American journal of physical anthropology

authors： Hanna JB,Polk JD,Schmitt D

更新日期：2006-08-01 00:00:00

abstract：:Dramatic changes in cranial capacity have characterized human evolution. Important evolutionary hypotheses, such as the spatial packing hypothesis, assert that increases in relative brain size (encephalization) have caused alterations to the modern human skull, resulting in a suite of traits unique among extant primat...

journal_title：American journal of physical anthropology

authors： Lesciotto KM,Richtsmeier JT

更新日期：2019-01-01 00:00:00

abstract：:Mummies are human remains with preservation of nonbony tissue. Mummification by natural influences results in so-called natural mummies, whereas mummification induced by active (human) intervention results in so-called artificial mummies, although many cultures practiced burial rites, which to some degree involved bot...

journal_title：American journal of physical anthropology

authors： Lynnerup N

更新日期：2007-01-01 00:00:00

abstract：:The study of enamel thickness has received considerable attention in regard to the taxonomic, phylogenetic and dietary assessment of human and non-human primates. Recent developments based on two-dimensional (2D) and three-dimensional (3D) digital techniques have facilitated accurate analyses, preserving the original ...

journal_title：American journal of physical anthropology

authors： Benazzi S,Panetta D,Fornai C,Toussaint M,Gruppioni G,Hublin JJ

更新日期：2014-02-01 00:00:00

abstract：OBJECTIVES:Studies of the carbon and nitrogen stable isotope ratios (δ(13) C and δ(15) N) of modern tissues with a fast turnover, such as hair and fingernails, have established the relationship between these values in mothers and their infants during breastfeeding and weaning. Using collagen from high-resolution dentin...

journal_title：American journal of physical anthropology

authors： Beaumont J,Montgomery J,Buckberry J,Jay M

更新日期：2015-07-01 00:00:00

abstract：:Two hundred black and white adult human skeletons and 200 living black and white children from the greater Cleveland area were examined for evidence of enamel hypoplasia. Enamel hypoplasia, present in varying expressings (pits, lines and grooves), was found to be more prevalent in both skeletal samples, than in the li...

journal_title：American journal of physical anthropology

authors： El-Najjar MY,DeSanti MV,Ozebek L

更新日期：1978-02-01 00:00:00

abstract：:Considerable attention has been devoted to variation in levels of energy expenditure between and within populations; these are commonly evaluated following international guidelines for grading light, moderate, and heavy physical activity levels (PAL). This study presents activity profiles by season and sex for subsist...

journal_title：American journal of physical anthropology

authors： Panter-Brick C

更新日期：1996-05-01 00:00:00

abstract：OBJECTIVES:This paper addresses the prevalence and pattern of physical violence in the prehispanic society of Gran Canaria and discusses its link with the social structure and insular context in which that people lived. MATERIALS AND METHODS:347 prehispanic crania from Guayadeque Ravine (575-1415 AD) have been examine...

journal_title：American journal of physical anthropology

authors： Delgado-Darias T,Alberto-Barroso V,Velasco-Vázquez J

更新日期：2018-05-01 00:00:00

abstract：:Repetitive linear enamel hypoplasia (rLEH) is often observed in recent large-bodied apes from Africa and Asia as well as Mid- to Late Miocene sites from Spain to China. The ubiquity and periodicity of rLEH are not understood. Its potential as an ontogenetic marker of developmental stress in threatened species (as well...

journal_title：American journal of physical anthropology

authors： Skinner MF,Hopwood D

更新日期：2004-03-01 00:00:00

abstract：:Pursuant to his major research interest in the cultural ecology of hunter-gatherers, Birdsell collected an unparalleled body of phenotypic data on Aboriginal Australians during the mid twentieth century. Birdsell did not explicitly relate the geographic patterning in his data to Australia's climatic variation, instead...

journal_title：American journal of physical anthropology

authors： Gilligan I,Bulbeck D

更新日期：2007-09-01 00:00:00

abstract：:This article examines the influence of nutritional status on the emergence of deciduous dentition in a cross-sectional sample of 510 rural Rajput children from the Jubbal and Kotkhai Tehsils, Shimla District, Himachal Pradesh, India. The nutritional status of each child was evaluated using Z-scores of height/supine le...

journal_title：American journal of physical anthropology

authors： Gaur R,Kumar P

更新日期：2012-05-01 00:00:00

abstract：:On the basis of new examination of ancient DNA and craniometric analyses, Neolithic dispersal in Central Europe has been recently explained as reflecting colonization or at least a major influx of near eastern farmers. Given the fact that Neolithic dispersal in Central Europe was very rapid and extended into a large a...

journal_title：American journal of physical anthropology

authors： Galeta P,Sládek V,Sosna D,Bruzek J

更新日期：2011-09-01 00:00:00

abstract：:Neanderthals and anatomically modern humans (AMHs) may have lived in close proximity in the Near East region during Middle Paleolithic times. Although functional morphological analyses suggest a marked behavioral contrast between these two human groups, new dental micro- and macro-wear studies, together with new archa...

journal_title：American journal of physical anthropology

authors： Fiorenza L,Kullmer O

更新日期：2013-09-01 00:00:00

abstract：:The Miles method of age estimation relies on molar wear to estimate age and is widely used in bioarcheological contexts. However, because the method requires physical seriation and a sample of subadults to estimate wear rates it cannot be applied to many samples. Here, we modify the Miles method by scoring occlusal we...

journal_title：American journal of physical anthropology

authors： Gilmore CC,Grote MN

更新日期：2012-10-01 00:00:00