Abstract:
:The condyles of 72 aged and sexed Haida Indians were measured for anteroposterior and mediolateral diameter and their approximate areas calculated. Dental wear was assessed for the same individuals. Asymmetry of condyle size did not appear to change with age. In a pair-wise analysis, no relationship was found between the largest of a pair of condyles and the most worn side of the dentition. The difference in size between each pair of condyles (normalized for individual size) was plotted as a histogram and found to have a normal distribution with a mean of 0 and no skewness. Condyle asymmetry does not appear to be related to differential chewing forces but more closely fits the model of fluctuating asymmetry.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Costa RL Jrdoi
10.1002/ajpa.1330700116subject
Has Abstractpub_date
1986-05-01 00:00:00pages
119-23issue
1eissn
0002-9483issn
1096-8644journal_volume
70pub_type
杂志文章abstract::An analysis of the anterior patellar groove of the human femur shows considerable variation in its medial and lateral spects. The groove itself, measured by the angle it encloses, shows considerably less variation than its individual components. The suggested functional relationship between bicondylar angle and latera...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330470117
更新日期:1977-07-01 00:00:00
abstract::Lack of independence of data points or the pooling fallacy has been suggested as a potential problem in the study of handedness in nonhuman primates, particularly as it relates to whether hand use responses should be recorded as individual events or bouts of activity. Here, I argue that there is no evidence that the c...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22248
更新日期:2013-05-01 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
abstract::Four skeletal series (Corinth, Greece; Gran Quivira, New Mexico; Semna South, Sudanese Nubia, and a large group from scattered sites in England) were coded for sex, jaw, tooth group, dental attrition, dental caries, site and time period. Through thec concepts of a basal level of caries and a cariosity gradient, a sing...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330510414
更新日期:1979-11-01 00:00:00
abstract::Twenty healthy men were asked to walk as straight as possible to a target 60 m away at normal speed. A series of footprints was recorded for each subject by having him wear socks soaked with red ink and walk on white paper fixed flat to the floor. Fourier analysis was applied to determine whether the subjects actually...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330890104
更新日期:1992-09-01 00:00:00
abstract::We examine the demographic correlates of paternity confidence, or men's assessment of the likelihood that they are the genetic father of a particular child. Evolutionary theory predicts that men will provide less parental investment for putative genetic offspring who are unlikely to be their actual offspring, but conf...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20452
更新日期:2006-12-01 00:00:00
abstract::As evidence accumulates regarding the influence of hormones and stress-related conditions on maternal behavior, it becomes critical to better understand the relationship between physiological stress and the ability to cope with infants. Eight Japanese macaque females were observed 3 hr per week during the first 12 wee...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10150
更新日期:2003-03-01 00:00:00
abstract::The purpose of this paper is to provide skin color data on several endogamous groups of eastern Nepal and to demonstrate genetic microdifferentiation in skin color. Skin reflectance measures were taken at the upper inner arm and forehead sites, using the British DSL Model 99 Reflectance Spectrophotometer fitted with b...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330850306
更新日期:1991-07-01 00:00:00
abstract::It is unclear whether earlier age at menarche is associated with higher body mass index (BMI) because they share a common genetic underpinning. We investigated the impact of single nucleotide polymorphisms (SNPs) influencing menarche timing on peripubertal BMI. For 556 Fels Longitudinal Study children (277 boys/279 gi...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22121
更新日期:2013-01-01 00:00:00
abstract::Uncertainties as to the nature and implications of osteoarthritis and calcium pyrophosphate deposition disease (CPPD) in primates were subject to critical review through examination of 153 prosimians and 1,250 Old World non-prosimian primates. Osteoarthritis, calcium pyrophosphate deposition disease, and infectious ar...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330870308
更新日期:1992-03-01 00:00:00
abstract::Electrocardiographic studies have reported persistent right ventricle predominance in high altitude children as an adaptive response. No information was provided on ethnicity and environmental factors in those studies. We assessed the electrocardiographic characteristics in healthy high altitude children with mixed an...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20563
更新日期:2007-06-01 00:00:00
abstract::The prevailing research design for studying infant sleep erroneously assumes the species-wide normalcy of solitary nocturnal sleep rather than a social sleeping environment. In fact, current clinical perspectives on infant sleep, which are based exclusively on studies of solitary sleeping infants, may partly reflect c...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330830307
更新日期:1990-11-01 00:00:00
abstract::Total testosterone and dihydrotestosterone in blood serum as well as free testosterone in saliva were determined by radioimmunoassay in 110 healthy young men. The results were compared with the development of terminal hair on the trunk and limbs, with the disposition to balding and with the disposition to acne. No sig...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330880106
更新日期:1992-05-01 00:00:00
abstract:INTRODUCTION:Physiological stress is one of the various factors that can have an impact on stable isotope ratios. However, its effect on bone collagen stable isotope ratios is still not fully understood. This study aims to build on previous research on how different disease stages may affect bone collagen stable isotop...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23958
更新日期:2020-02-01 00:00:00
abstract::Haplogroup R1a1-M198 is a major clade of Y chromosomal haplogroups which is distributed all across Eurasia. To this date, many efforts have been made to identify large SNP-based subgroups and migration patterns of this haplogroup. The origin and spread of R1a1 chromosomes in Eurasia has, however, remained unknown due ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22167
更新日期:2012-12-01 00:00:00
abstract::Root dentine transparency (RDT) was used to estimate the ages of human subjects from 152 intact teeth. Teeth were from 134 subjects, both historical and recent, of known age and sex. The aims of this work are 1) to compare two methods of using RDT to estimate age; 2) to test the applicability of the regression formula...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330850105
更新日期:1991-05-01 00:00:00
abstract::Endocrine studies of captive strepsirrhine primates suggest that physical environment and social factors mediate inter-individual variations in testicular function and serum testosterone (sT) in males. While these studies have made major contributions to our understanding of the individual proximate mechanisms influen...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199802)105:2<137::AID-AJPA
更新日期:1998-02-01 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
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199904)108:4<483::AID-AJPA
更新日期:1999-04-01 00:00:00
abstract::A method of drawing outlines of the distal end of the humerus is presented and carried out on some pongids (Pan troglodytes, Pan paniscus, Pongo pygmaeus), on modern man, and on some casts of Plio-Pleistocene hominids. It appears that these outlines are good indicators of the overall morphology and permit the distingu...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330560307
更新日期:1981-11-01 00:00:00
abstract::As shown in 91 embryos and fetuses in the 41-235 mm crownrump length, brachymesophalangia-5 may be identified in prenatal time. Although the ratios involving different combinations of length of mid-5 relative to other segments yield different frequencies of BMP-5, the short middle segment of the little finger is alrea...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330440305
更新日期:1976-05-01 00:00:00
abstract::The skull is distinguished from other parts of the skeleton by its composite construction. The sutures between bony elements provide for interstitial growth of the cranium, but at the same time they alter the transmission of stress and strain through the skull. Strain gages were bonded to the frontal and parietal bone...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/1096-8644(200008)112:4<575::AID-AJPA10>3.0
更新日期:2000-08-01 00:00:00
abstract::Although previous studies have characterized the genetic structure of populations from Haiti and Jamaica using classical and autosomal STR polymorphisms, the patrilineal influences that are present in these countries have yet to be explored. To address this lacuna, the current study aims to investigate, for the first ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22090
更新日期:2012-08-01 00:00:00
abstract::Little is known about ingested food size (V(b)) in primates, even though this variable has potentially important effects on food intake and processing. This study provides the first data on V(b) in strepsirrhine primates using a captive sample of 17 species. These data can be used for generating and testing models of ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21285
更新日期:2010-08-01 00:00:00
abstract:OBJECTIVES:This study aims to evaluate the use of quantitative methods of measuring variation in scalp hair fiber shape and pigmentation and carry out exploratory data analysis on a limited sample of individuals from diverse populations in order to inform future avenues of research for the evolution of modern human hai...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22971
更新日期:2016-06-01 00:00:00
abstract::The ecological pressures shaping chimpanzee anatomy and behavior are the subject of much discussion in primatology and paleoanthropology, yet empirical data on fundamental parameters including body size, morbidity, and mortality are rare for wild chimpanzees. Here, we present skeletal pathology and body size data for ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20758
更新日期:2008-04-01 00:00:00
abstract::Excavations at hearth levels at the Molare Shelter in 1985 yielded the mandible of a 3-4-year-old child. The associated lithic artifacts recovered with it are Mousterian. Its features, although quite archaic, are within the known range of variation of Neandertals. Four deciduous molars are still preserved in the mandi...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330790404
更新日期:1989-08-01 00:00:00
abstract::The origins of the ancient Egyptian state and its formation have received much attention through analysis of mortuary contexts, skeletal material, and trade. Genetic diversity was analyzed by studying craniometric variation within a series of six time-successive Egyptian populations in order to investigate the evidenc...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20569
更新日期:2007-04-01 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
pub_type: 杂志文章
doi:10.1002/ajpa.20640
更新日期:2007-09-01 00:00:00
abstract::Ontogenetic samples of endocranial volumes (EVs) from great apes and humans are critical for understanding the evolution of the brain growth pattern in the hominin lineage. However, high quality ontogenetic data are scarce, especially for nonhuman primates. Here, we provide original data derived from an osteological c...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21641
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVES:European ancestry in many populations in Latin America at autosomal loci is often higher than that from X-linked loci indicating more European male ancestry and more Amerindian female ancestry. Generally, this has been attributed to more European male gene flow but could also result from an advantage to Euro...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23220
更新日期:2017-07-01 00:00:00