Biological and Physical Anthropology Commons^™

Genetic Variation Of X-Strs In The Wichí Population From Chaco Province, Argentina, Laura Angela Glesmann, Pablo Francisco Martina, Cecilia Inés Catanesi

Human Biology Open Access Pre-Prints

The Wichí people from Chaco province inhabit the region called Impenetrable Chaqueño, where the climatic conditions are extreme. Besides the scarce communication with the main urban centers, the cultural patterns of the Wichí cause these communities to live in certain degree of isolation. The effect of this situation is an increased genetic differentiation from other populations, as it was observed through autosomal and Y chromosome markers. However, the genetic variation of X chromosome has not been fully analyzed yet. The patterns of allele distribution of different markers of X chromosome can be highly informative in comparative studies, because its special …

Age-Independent Increases In Male Salivary Testosterone During Horticultural Activity Among Tsimane Forager-Farmers, Benjamin C. Trumble, Daniel K. Cummings, Kathleen A. O'Connor, Darryl J. Holman, Eric A. Smith, Hillard Kaplan, Michael D. Gurven

ESI Publications

Testosterone plays an important role in mediating male reproductive trade-offs in many vertebrate species, augmenting muscle and influencing behavior necessary for male-male competition and mating-effort. Among humans, testosterone may also play a key role in facilitating male provisioning of offspring as muscular and neuromuscular performance are deeply influenced by acute changes in testosterone. This study examines acute changes in salivary testosterone among 63 Tsimane men ranging in age from 16–80 (mean 38.2) years during one-hour bouts of treechopping while clearing horticultural plots. The Tsimane forager-horticulturalists living in the Bolivian Amazon experience high energy expenditure associated with food production, have high …

Colour And Odour Drive Fruit Selection And Seed Dispersal By Mouse Lemurs, Kim Valenta, Ryan J. Burke, Sarah A. Styler, Derek A. Jackson, Amanda D. Melin, Shawn M. Lehman

Dartmouth Scholarship

Animals and fruiting plants are involved in a complex set of interactions, with animals relying on fruiting trees as food resources, and fruiting trees relying on animals for seed dispersal. This interdependence shapes fruit signals such as colour and odour, to increase fruit detectability, and animal sensory systems, such as colour vision and olfaction to facilitate food identification and selection. Despite the ecological and evolutionary importance of plant-animal interactions for shaping animal sensory adaptations and plant characteristics, the details of the relationship are poorly understood. Here we examine the role of fruit chromaticity, luminance and odour on seed dispersal by …

30 Days In The Life: Daily Nutrient Balancing In A Wild Chacma Baboon, Caley A. Johnson, David Raubenheimer, Jessica M. Rothman, David Clarke, Larissa Swedell

Publications and Research

For most animals, the ability to regulate intake of specific nutrients is vital to fitness. Recent studies have demonstrated nutrient regulation in nonhuman primates over periods of one observation day, though studies of humans indicate that such regulation extends to longer time frames. Little is known about longer-term regulation in nonhuman primates, however, due to the challenges of multiple-day focal follows. Here we present the first detailed study of nutrient intake across multiple days in a wild nonhuman primate. We conducted 30 consecutive all day follows on one female chacma baboon (Papio hamadryas ursinus) in the Cape Peninsula of South …

Evolution And Allometry Of Calcaneal Elongation In Living And Extinct Primates, Doug M. Boyer, Erik R. Seiffert, Justin T. Gladman, Jonathan I. Bloch

Publications and Research

Specialized acrobatic leaping has been recognized as a key adaptive trait tied to the origin and subsequent radiation of euprimates based on its observed frequency in extant primates and inferred frequency in extinct early euprimates. Hypothesized skeletal correlates include elongated tarsal elements, which would be expected to aid leaping by allowing for increased rates and durations of propulsive acceleration at takeoff. Alternatively, authors of a recent study argued that pronounced distal calcaneal elongation of euprimates (compared to other mammalian taxa) was related primarily to specialized pedal grasping. Testing for correlations between calcaneal elongation and leaping versus grasping is complicated by …

Geographic Patterns Of Early Holocene New World Dental Morphological Variation, Christopher Stojanowski, Kent Johnson, William N. Duncan

ETSU Faculty Works

Dental anthropology played a seminal role in early studies of the peopling of the New World, and was a foundation of the early three wave model proposed by Greenberg, Turner and Zegura. In recent years, however, developments in anthropological genetics, craniometry, and archaeological discoveries have largely omit-ted dental anthropology from debates regarding Native American origins. Here we consider this situation and reassert dental anthropology's relevance to the topic by presenting an inter-individual analysis of Paleoindian and Paleoamerican dentitions. A small set of dental morphological variables was used to estimate Gower similarity coefficients between individual specimens. The resulting similarity matrix was …

Science Fiction And The Myth Of Trajectory Evolution, Jocelyn D. Pickreign

The Macalester Review

Stephen Jay Gould first proposed the idea of “iconographies of progress.” Today, one of the most prominent forms of progress iconography is the science fiction story. Science fiction as a genre frequently portrays evolution as a linear trajectory of increasing complexity, and in doing so, furthers a worldview that is not unlike the pre-Darwin understanding of human beings as both the center and the pinnacle of the natural world.

Understanding The Increased Prevalence Of Autism In The United States, Jenna Marie Mendes

Social Sciences

No abstract provided.

Chronologies Of Pain And Power: Violence, Inequality, And Social Control Among Ancestral Pueblo Populations (Ad 850-1300), Ryan Patrick Harrod

UNLV Theses, Dissertations, Professional Papers, and Capstones

Analysis of human remains in the Greater Southwest offers important insights into mechanisms underlying cultural processes, human adaptability as well as behavioral flexibility and resilience in the face of change. Data collected from human remains from several sites throughout the Four Corners region of the Greater Southwest provides information on the ways that violence and social inequality were used to maintain a regional complex between AD 850 to AD 1300. Human remains were used to provide empirical data on biological (age, sex, stature, and robusticity) and cultural (mortuary context, burial practice, and site layout) identity. Skeletal remains provided information on …

An Examination Of Chipped Stone From Two Middle Holocene Archaeological Sites In The East Central Great Plains, Christine A. Nycz

Department of Anthropology: Theses and Student Research

This study examines aspects of movement and mobility of hunter-gatherer groups in the east central Great Plains during the Middle Holocene, between 8500 cal and 5000 cal B.P. Few published reports detail archaeological assemblages or address features of prehistoric mobility in this subregion of the Great Plains. Current research on the Great Plains emphasizes bison procurement and low regional bison mobility. This thesis presents interpretations of hunter-gatherer mobility based on examination of chipped stone assemblages from two Middle Holocene archaeological deposits (the Hill and Simonsen sites) in western Iowa. The resulting analysis demonstrates restricted hunter-gatherer mobility within this subregion, with …

Morphometric Analysis Of Acetabular Rim Shape Among Ancient Mongolian Pastoralists, Jacqueline T. Eng, Andrew Baker, Pingbo Tang, Shannon Thompson, Jamie M. Gomez

Faculty Research and Creative Activities Award (FRACAA)

The adoption of nomadic pastoralism may have marked new physiological stresses to the hip for the bipedally-adapted human rider. Relatively few studies have examined differences in acetabular shape resulting from long-term equestrianism. Steppe populations of Mongolia began a nomadic pastoral lifestyle during the Late Bronze Age, which has persisted to the present day, with whole communities of men, women, and children riding horses as part of their lifeway.

Experimentation In Sling Weaponry: Effectiveness Of And Archaeological Implications For A World-Wide Primitive Technology, Eric T. Skov

Department of Anthropology: Theses and Student Research

The sling is a simple, cheap and effective weapon that was widely distributed among prehistoric and historic populations. Well-known archaeological and textual evidence attests to its widespread military usage in Europe, South America, andCentral America. However, ethnographic and archaeological evidence also suggest that the sling was widely distributed among Native American populations. Experimentation presented herein suggests that previous scholarship and experimental efforts have significantly underestimated potential velocity, range and potential damage to target organisms. Given the world-wide distribution of sling technology, revision of basic assumptions of weapon capability can have a profound effect on interpretation of archaeological problems internationally and …

Household Task Delegation Among High-Fertility Forager-Horticulturalists Of Lowland Bolivia, Jonathan Stieglitz, Michael Gurven, Hillard Kaplan, Paul L. Hooper

ESI Publications

Human kin cooperation is universal, leading researchers to label humans as “cooperative breeders.” Despite widespread interest in human cooperation, there has been no systematic study of how household economic decision making occurs. We document age and sex profiles of task delegation by parents to children ages 4–18 among Bolivian forager-horticulturalists. We test for sex differences in the probability of delegation and examine whether tasks are more likely delegated as household labor demand increases. We also test whether food acquisition tasks are more likely delegated to higher producers.We find mixed support for the prediction that girls are more likely delegated domestic …

Physical Activity And Modernization Among Bolivian Amerindians, Michael Gurven, Adrian V. Jaeggi, Hillard Kaplan, Daniel Cummings

ESI Publications

Background: Physical inactivity is a growing public health problem, and the fourth leading risk factor for global mortality. Conversely, indigenous populations living traditional lifestyles reportedly engage in vigorous daily activity that is protective against non-communicable diseases. Here we analyze physical activity patterns among the Tsimane, forager-horticulturalists of Amazonian Bolivia with minimal heart disease and diabetes. We assess age patterns of adult activity among men and women, test whether modernization affects activity levels, and examine whether nascent obesity is associated with reduced activity.

Methods and Findings: A factorial method based on a large sample of behavioral observations was employed …

Tree Climbing And Human Evolution, Vivek V. Venkataraman, Thomas S. Kraft, Nathaniel J. Dominy

Dartmouth Scholarship

Paleoanthropologists have long argued—often contentiously—about the climbing abilities of early hominins and whether a foot adapted to terrestrial bipedalism constrained regular access to trees. However, some modern humans climb tall trees routinely in pursuit of honey, fruit, and game, often without the aid of tools or support systems. Mortality and morbidity associated with facultative arboreality is expected to favor behaviors and anatomies that facilitate safe and efficient climbing. Here we show that Twa hunter–gatherers use extraordinary ankle dorsiflexion (>45°) during climbing, similar to the degree observed in wild chimpanzees. Although we did not detect a skeletal signature of dorsiflexion …

'Deviant' Burials In Archaeology, Jesslyn E. Hodgson

Anthropology Publications

The term ‘deviant’ is used to describe burials that deviate from the normative burial rites of a given society, at a given point in time. The problem with applying such a term to the archaeological record rests predominantly in the fact that the term ‘deviant’ has a negative connotation. This negative connotation insinuates that the individual in the burial context may have been viewed by their society in a negative light, however, through analysis of case studies it is shown that many ‘deviant’ burials are not in fact burials of people viewed as deviant, but ‘different’ burials given to people …

Socioeconomic Differences In Body Mass Index, Neighborhood Satisfaction, Stress, And Perceived Racism Among African Americans In Metropolitan Detroit, Corey Zolondek

Wayne State University Dissertations

This exploratory study tested the research hypothesis that among African Americans in Metropolitan Detroit, neighborhood satisfaction, stress and perception of racism influence obesity differently based on income. The three expected results for the data were as follows: income does not have a link to obesity; links between BMI and the study variables (neighborhood satisfaction, stress, and perceived racism) vary according to income category; and the study variables (neighborhood satisfaction, stress, and perceived racism) influence the variability of BMI differently according to income category. The results indicate that there are no income differences in how the study variables influence obesity. Therefore, …

Dog Burials Associated With Human Burials In The West Indies During The Early Pre-Columbian Ceramic Age (500 Bc-600 Ad), Sandrine Grouard, Sophia Perdikaris, Karyne Debue

School of Global Integrative Studies: Faculty Publications

Across the Caribbean, the widespread presence of canine remains at archaeological sites from the Saladoid period raises questions about the role of “man’s best friend.” Dog (Canis familiaris) remains have been found located in both refuse middens and burials adjacent to human graves in a number of sites in the French Antilles and Barbuda, West Indies. This paper will critically examine dog remains and discuss the varied duality of the dog’s role in the Saladoid world: from food source to lifelong companion. The importance of dogs within Amerindian sites from Saint Martin, the Guadeloupe archipelago, Martinique and Barbuda …

A Penile Spine/Vibrissa Enhancer Sequence Is Missing In Modern And Extinct Humans But Is Retained In Multiple Primates With Penile Spines And Sensory Vibrissae, Philip L. Reno, Cory Y Mclean, Jasmine E Hines, Terence D Capellini, Gill Bejerano, David M Kingsley

PCOM Scholarly Works

Previous studies show that humans have a large genomic deletion downstream of the Androgen Receptor gene that eliminates an ancestral mammalian regulatory enhancer that drives expression in developing penile spines and sensory vibrissae. Here we use a combination of large-scale sequence analysis and PCR amplification to demonstrate that the penile spine/vibrissa enhancer is missing in all humans surveyed and in the Neandertal and Denisovan genomes, but is present in DNA samples of chimpanzees and bonobos, as well as in multiple other great apes and primates that maintain some form of penile integumentary appendage and facial vibrissae. These results further strengthen …

Evolution Of The Human Diet: What We Can Learn From Hunters And Gatherers, Kara Osborne, Alyssa Crittenden

McNair Poster Presentations

The study of hunter-gatherer populations around the world can greatly inform our understanding of the evolution of the human diet. Ethnographic research of modern hunter-gatherers has been used to infer the possible food consump­tion and acquisition patterns of our ancestors. Hunter-gatherers provide the in­formation necessary for the understanding of the past human diet, due to these populations living similar lifestyles in similar environments, therefore procuring similar foods.

The Hadza, a group of nomadic hunters and gatherers living in Tanzania, East Africa, are one of the primary populations that nutritional anthropologists study to infer what possible foods our ancestors acquired and …