The adaptive value of secondary males in the polygynous multi-level society of hamadryas baboons.

abstract：:Distribution and variation statistics of hominid endocranial volume (ECV) have been investigated. Within the interpretative constraints imposed by (very) small sample sizes, the requirements for normality are met, as are those for heteroscedasticity. A significant difference in means can be demonstrated for only two c...

journal_title：American journal of physical anthropology

authors： Blumenberg B

更新日期：1985-10-01 00:00:00

abstract：:A recently proposed model for canine reduction in hominid evolution (the "dual selection" model) suggests that canine reduction occurs as a result of selection for incorporation of the canines into a functional incisal field. Among the evidence used to support this model are patterns of wear and occlusion of the canin...

journal_title：American journal of physical anthropology

authors： Plavcan JM,Kelley J

更新日期：1996-03-01 00:00:00

abstract：:We analysed the frequency of six Y-specific polymorphisms in 105 Amerindian males from seven different populations, 42 Caucasian males, and a small number of males of African, Chinese, and Melanesian origin. The combination of three of the six polymorphisms studied produced four different Y-haplogroups. The haplogroup...

journal_title：American journal of physical anthropology

authors： Bianchi NO,Bailliet G,Bravi CM,Carnese RF,Rothhammer F,Martínez-Marignac VL,Pena SD

更新日期：1997-01-01 00:00:00

abstract：:Using observations on the presence or absence of terminal hair in 13 locations on 700 white adult males, descriptive statistics were tabulated, phi coefficients of intercorrelation were computed, principal axis factor loadings were extracted, and varimax rotation of factors to simple structure was performed. The resul...

journal_title：American journal of physical anthropology

authors： Barker DG

更新日期：1976-01-01 00:00:00

abstract：:In the present study the frequency of the simian crease among 57 Down patients is compared to the corresponding figures of related and unrelated individuals. A study of the correlation with the dermatoglyphic patterns of the thenar and hypothenar areas is presented, the palm print classification being carried out acco...

journal_title：American journal of physical anthropology

authors： Rignell A

更新日期：1987-03-01 00:00:00

abstract：:Unbiased selection of regions of interest (ROIs) and unbiased definition of histological structures are needed to improve the repeatability of microscopic methods for age at death determination and to reduce operator subjectivity. We present results obtained by selecting ROIs according to stereological principles on a...

journal_title：American journal of physical anthropology

authors： Villa C,Lynnerup N

更新日期：2010-07-01 00:00:00

abstract：:The Warao Indian village of Jobure has two modes for height within its adult male population. One mode is at 158 cm and the second occurs at 169 cm. Mean height for adult males and females for this village is significantly higher (alpha less than or equal to 0.05) than for the other Warao villages studied. Examination...

journal_title：American journal of physical anthropology

authors： Fleischman ML

更新日期：1980-09-01 00:00:00

abstract：:The Spearman-Brown Prophesy formula, derived from psychometrics, may be used in anthropometric studies to describe the relationship between the intraclass reliability coefficient for a single measurement and the reliability resulting from the mean of replicate measurements. This theory may be applied to determine expe...

journal_title：American journal of physical anthropology

authors： Himes JH

更新日期：1989-05-01 00:00:00

abstract：:New fossil hominid specimens from the Laetolili fossil locality in Tanzania are described. The material includes mandibles and teeth derived from reliably-dated deposits of Pliocene age. Preliminary descriptions, measurements and illustrations are presented. ...

journal_title：American journal of physical anthropology

authors： White TD

更新日期：1977-03-01 00:00:00

abstract：:Familial similarity of the dermatoglyphic trait values of finger ridge-count scores and pattern intensity index is examined for 125 nuclear families from the Velanadu Brahmin population of Southern India by the method of association arrays. This methodology assesses parent-offspring and sibship similarity through a co...

journal_title：American journal of physical anthropology

authors： Karlin S,Williams PT,Chakraborty R,Mathew S

更新日期：1983-12-01 00:00:00

abstract：:The fingers in the adult human hand differ in length and in distal extent. The literature agrees that in the clear majority of males, the distal extent of the ring finger tends to be relatively greater (using the middle finger as standard) than the index finger. However, the results for females vary considerably, with...

journal_title：American journal of physical anthropology

authors： Peters M,Mackenzie K,Bryden P

更新日期：2002-03-01 00:00:00

abstract：OBJECTIVES:Modern humans diverge from other extant hominids (chimpanzees, gorillas, and orangutans) in a series of craniofacial morphological features. Like hylobatids, they possess a face with a reduced subnasal prognathism that is associated with a globular basicranium. These traits are not independent, as the skull ...

journal_title：American journal of physical anthropology

authors： Neaux D

更新日期：2017-04-01 00:00:00

abstract：:In a survey of dental health status of ancient Southern Peru, 101 skeletal remains were studied from five cultures: Paracas, Nazca, Tiahuanaco, Ica, and Inca. The Paracas and Ica cultures exhibited more missing antemortem teeth per mandible than the other cultures. Frequency of missing one or more third molars was les...

journal_title：American journal of physical anthropology

authors： Elzay RP,Allison MJ,Pezzia A

更新日期：1977-01-01 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

authors： Zakrzewski SR

更新日期：2007-04-01 00:00:00

abstract：:Dart's 1925 announcement of Australopithecus africanus (Dart: Nature 115 [1925] 195-199) was highly controversial, partly because of an interpretation of the Taung natural endocast that rested on an erroneous identification of the lambdoid suture as the lunate sulcus. Unpublished materials from the University of Witwa...

journal_title：American journal of physical anthropology

authors： Falk D

更新日期：2009-01-01 00:00:00

abstract：:New data were obtained on mitochondrial DNA (mtDNA) from Guahibo from Venezuela, a group so far not studied using molecular data. A population sample (n = 59) was analyzed for mtDNA variation in two control-region hypervariable segments (HV1 and HV2) by sequencing. The presence or absence of a 9-bp polymorphism in the...

journal_title：American journal of physical anthropology

authors： Vona G,Falchi A,Moral P,Calò CM,Varesi L

更新日期：2005-07-01 00:00:00

abstract：:Intrapopulational tooth striation variability has been studied in a sample of 99 individuals from the medieval agricultural population of La Olmeda (Palencia, Spain). The number, length, and orientation of all observed striations were recorded using a scanning electron microscope and an image analyzer system. Tooth st...

journal_title：American journal of physical anthropology

authors： Pérez-Pérez A,Lalueza C,Turbón D

更新日期：1994-06-01 00:00:00

abstract：:Serum samples of 683 unrelated male and female individuals of four Sardinian population samples (Sassari, Nuoro, Oristano and Cagliari) were typed for G 1 m (1,2,3,17), G 3 m (5,6,10,11,13,14,15,16,21,26), and Km (1). Phenotype, haplotype (Gm), and allele frequencies (Km), respectively, show a remarkable variability b...

journal_title：American journal of physical anthropology

authors： Walter H,Matsumoto H,De Stefano GF

更新日期：1991-09-01 00:00:00

abstract：:Although degenerative joint disease is an old and exceedingly common problem, clinical investigators have not reached a consensus regarding the etiology of this disease. Comparative osteological analysis of the knee, hip, shoulder, and elbow joints of 789 individuals from four human skeletal populations (Black and Whi...

journal_title：American journal of physical anthropology

authors： Jurman RD

更新日期：1977-03-01 00:00:00

abstract：:This article examines social and environmental influences on the development of hypertension in a sample of 568 adults (290 men; 278 women) aged 20 years and older from Dakar, Senegal. We test the hypothesis that more recent immigrants to the city of Dakar will have lower blood pressure and lower rates of hypertension...

journal_title：American journal of physical anthropology

authors： Duboz P,Macia E,Chapuis-Lucciani N,Boëtsch G,Gueye L

更新日期：2012-10-01 00:00:00

abstract：:Periodic episodes of food scarcity may highlight the adaptive value of certain anatomical traits, particularly those that facilitate the acquisition and digestion of exigent fallback foods. To better understand the selective pressures that favored the distinctive dental and locomotor morphologies of gibbons and orangu...

journal_title：American journal of physical anthropology

authors： Vogel ER,Haag L,Mitra-Setia T,van Schaik CP,Dominy NJ

更新日期：2009-12-01 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：:Pliopithecinae and Crouzeliinae (Primates: Pliopithecidae) are distinguished dentally by the sharper crests, more compressed cusps, larger foveae, and narrower molars of the latter. Traditionally, such differences were qualitatively related to increased folivory in crouzeliines. This was subsequently disproved by micr...

journal_title：American journal of physical anthropology

authors： DeMiguel D,Alba DM,Moyà-Solà S

更新日期：2013-08-01 00:00:00

abstract：:We constructed a three-dimensional whole-body musculoskeletal model of the Japanese macaque (Macaca fuscata) based on computed tomography and dissection of a cadaver. The skeleton was modeled as a chain of 20 bone segments connected by joints. Joint centers and rotational axes were estimated by joint morphology based ...

journal_title：American journal of physical anthropology

authors： Ogihara N,Makishima H,Aoi S,Sugimoto Y,Tsuchiya K,Nakatsukasa M

更新日期：2009-07-01 00:00:00

abstract：:The amount of disparity between the lengths of the radii and ulnae of 177 Negro female skeletons of the Terry Collection was questioned. An error was found and corrections have been made in the relevant statistics and tables. ...

journal_title：American journal of physical anthropology

authors： Trotter M,Gleser GC

更新日期：1977-09-01 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...

journal_title：American journal of physical anthropology

authors： Holton NE,Franciscus RG,Ravosa MJ,Southard TE

更新日期：2014-03-01 00:00:00

abstract：:The Ainu people are considered to be the descendants of preagricultural native populations of northern Japan, while the majority of the population of contemporary Japan (Wajin) is descended mainly from postneolithic migrants. Polymorphisms of the HLA-DRB1, DRB3, and DQB1 alleles were investigated in DNA samples of 50 ...

journal_title：American journal of physical anthropology

authors： Bannai M,Tokunaga K,Imanishi T,Harihara S,Fujisawa K,Juji T,Omoto K

更新日期：1996-09-01 00:00:00

abstract：:This study was designed to investigate the relationship between traditional skeletal cephalometric measurement and Fourier analysis of the lateral soft-tissue profile. A random sample of 121 untreated subjects of European descent, with wide ranges of malocclusions and underlying facial patterns, was selected in the Or...

journal_title：American journal of physical anthropology

authors： Rose AD,Woods MG,Clement JG,Thomas CD

更新日期：2003-06-01 00:00:00

abstract：:The 6 million French-Canadians of Québec derive from a relatively small number of founders. Consequently, some hereditary diseases, which may or may not present a worldwide distribution, have been detected in high frequency in this population. Several studies, however, indicate a nonuniform distribution of these disea...

journal_title：American journal of physical anthropology

authors： Gagnon A,Heyer E

更新日期：2001-01-01 00:00:00

abstract：:It has long been thought that the prefrontal cerebral cortex has been greatly expanded in the human brain. Semendeferi et al. ([2001] Am. J. Phys. Anthropol. 114:224-241) showed that Brodmann's area 10 is relatively larger in the human compared to pongid brains. The question is: how much larger relatively is it? Using...

journal_title：American journal of physical anthropology

authors： Holloway RL

更新日期：2002-08-01 00:00:00