Latin American Studies Commons^™

Horticultural Activity Predicts Later Localized Limb Status In A Contemporary Pre-Industrial Population, Jonathan Stieglitz, Benjamin C. Trumble, Hillard Kaplan, Michael Gurven

ESI Publications

Objectives—Modern humans may have gracile skeletons due to low physical activity levels and mechanical loading. Tests using prehistoric skeletons are limited by the inability to assess behaviour directly, while modern industrialized societies possess few socio-ecological features typical of human evolutionary history. Among Tsimane forager-horticulturalists, we test whether greater activity levels and, thus, increased loading earlier in life are associated with greater later-life bone status and diminished age-related bone loss.

Materials and Methods—We used quantitative ultrasonography to assess radial and tibial status among adults aged 20+ years (mean±SD age=49±15; 52% female). We conducted systematic behavioural observations to assess earlier-life …

El Capitalismo Y El Ciudadano Del Distrito Federal: Evolución De La Identidad En La Ciudad De México En Respuesta A Los Cambios Económicos En Dos Épocas Desde La Óptica De La Región Más Transparente De Carlos Fuentes Y Hotel Df De Guillermo Fadanelli, Douglas Mitchell L. Emison

University Honors Theses

Throughout the history of Mexico, the country's gradual involvement with capitalism has given rise to different eras of profound economic change which have consequently generated a variety of influences implicating changes in Mexican sociocultural identity. This work investigates two specific eras of novel capitalist engagement to determine the relationship between these economic changes and the evolution of Mexican identity using the urban environment of Mexico City as the socio-spatial center. The sociocultural effects of Mexico's post-revolutionary era of economic development from the 1940s to the 1960s will first be explored, followed by an investigation of the post-NAFTA / WTO era …

Human Grooming In Comparative Perspective: People In Six Small-Scale Societies Groom Less But Socialize Just As Much As Expected For A Typical Primate, Adrian V. Jaeggi, Karen Kramer, Raymond Hames, Evan J. Kiely, Cristina Gomes, Hillard Kaplan, Michael Gurven

ESI Publications

Objectives—Grooming has important utilitarian and social functions in primates but little is known about grooming and its functional analogues in traditional human societies. We compare human grooming to typical primate patterns to test its hygienic and social functions.

Materials and Methods—Bayesian phylogenetic analyses were used to derive expected human grooming time given the potential associations between grooming, group size, body size, terrestriality, and several climatic variables across 69 primate species. This was compared against observed times dedicated to grooming, other hygienic behavior and conversation among the Maya, Pumé, Sanöma, Tsimane’, Yanomamö, and Ye’kwana (mean number of behavioral scans …

Politics Below The Surface: A Political Ecology Of Mineral Rights And Land Tenure Struggles In Appalachia And The Andes, Lindsay Shade

Theses and Dissertations--Geography

This dissertation examines how confusion and lack of access to information about subsurface property rights facilitates the rapid acquisition of mineral rights by mining interests, leaving those who live 'above the surface' to contend with complicated corporate and bureaucratic apparatuses. The research focuses on the first proposed state-run large scale mining project in Ecuador, believed to contain copper ores, and on the natural gas hydrofracking industry in three counties in north central West Virginia. Qualitative and visual methods, including mapping, are employed to determine (i.) how the geography of subsurface ownership patterns is changing, (ii.) links between changes in subsurface …

Cognitive Performance Across The Life Course Of Bolivian Forager-Farmers With Limited Schooling, Michael Gurven, Eric Fuerstenberg, Benjamin C. Trumble, Jonathan Stieglitz, Bret Beheim, Helen Davis, Hillard Kaplan

ESI Publications

Cognitive performance is characterized by at least two distinct life course trajectories. Many cognitive abilities (e.g. “effortful processing” abilities including fluid reasoning, and processing speed) improve throughout early adolescence and start declining in early adulthood, while other abilities (e.g. “crystallized” abilities like vocabulary breadth) improve throughout adult life, remaining robust even at late ages. Although schooling may impact performance and cognitive “reserve”, it has been argued that these age patterns of cognitive performance are human universals. Here we examine age patterns of cognitive performance among Tsimane forager-horticulturalists of Bolivia, and test whether schooling is related to differences in cognitive performance …

Emigration, Repatriation And The Reality Of Returned Youth In El Salvador, Isabel C. Duarte Vasquez

Master's Theses

According to US Customs and Border Protection, over 59 thousand unaccompanied minors from the Northern Triangle (Guatemala, Honduras and El Salvador) have been detained at the US border, of those 59 thousand, 17 thousand are from El Salvador. El Salvador is home to some of the most dangerous and ruthless gangs of the twenty-first century. Their ruthlessness comes from 1980s guerrilla warfare experience. In addition, El Salvador serves as a transshipment point for illicit substances from South America into Mexico. These dynamics fuel the homicide rate of the region as local gang members must protect their territory by any means …

Growth References For Tsimane Forager-Horticulturalists Of The Bolivian Amazon, Aaron D. Blackwell, Samuel S. Urlacher, Bret Beheim, Christopher Von Rueden, Adrian V. Jaeggi, Jonathan Stieglitz, Benjamin C. Trumble, Michael Gurven, Hillard Kaplan

ESI Publications

Objectives—Growth standards and references currently used to assess population and individual health are derived primarily from urban populations, including few individuals from indigenous or subsistence groups. Given environmental and genetic differences, growth may vary in these populations. Thus, there is a need to assess whether international standards are appropriate for all populations, and to produce population specific references if growth differs. Here we present and assess growth references for the Tsimane, an indigenous population of Bolivian forager-horticulturalists.

Methods—Mixed cross-sectional/longitudinal anthropometrics (9,614 individuals; 30,118 observations; ages 0–29 years) were used to generate centile curves and Lambda-Mu-Sigma (LMS) tables for …

Salivary Microbiomes Of Indigenous Tsimane Mothers And Infants Are Distinct Despite Frequent Premastication, Cliff S. Han, Melanie Ann Martin, Armand E.K. Dichosa, Ashlynn R. Daughton, Seth Frietze, Hillard Kaplan, Michael D. Gurven, Joe Alcock

ESI Publications

Background. Premastication, the transfer of pre-chewed food, is a common infant and young child feeding practice among the Tsimane, forager-horticulturalists living in the Bolivian Amazon. Research conducted primarily with Western populations has shown that infants harbor distinct oral microbiota from their mothers. Premastication, which is less common in these populations, may influence the colonization and maturation of infant oral microbiota, including via transmission of oral pathogens. We collected premasticated food and saliva samples from Tsimane mothers and infants (9-24 months of age) to test for evidence of bacterial transmission in premasticated foods and overlap in maternal and infant salivary …

Conflict Or Congruence? Maternal And Infant-Centric Factors Associated With Shorter Exclusive Breastfeeding Durations Among The Tsimane, Melanie A. Martin, Geni Garcia, Hillard Kaplan, Michael Gurven

ESI Publications

No abstract provided.

La Influencia Del Mercado En La Crianza De Alpacas En Las Comunidades Alto Andinas De Pucará, Jessica Casale

Student Publications

Using a social-anthropological approach, through first-hand experiences living in the field and speaking with the subjects of this study, this paper investigates how the global economic market of alpaca wool has had effect on the traditional cultural practices of alpaca herders in the high Andean communities of Pucará, Peru. The results reveal a loss of traditional Andean herder’s practices and beliefs in the face of modernization, the inequality and exploitation within the wool market, and the influence of western economic ideologies. To preserve cultural practices and enhance the conditions of an alpaca herder, I suggest educating the communities on more …

La Construcción De Una Identidad Propia Por Parte De Las Mujeres Piqueteras De Claypole, Como Protagonistas, Dentro Del Frente De Organizaciones En Lucha (Fol) / Mujeres Piqueteras Of Claypole Constructing Their Own Identity As Protagonists Within The Frente De Organizaciones En Lucha (Fol), Luz Daniela Castro

Independent Study Project (ISP) Collection

In the late 1990s in Argentina, the model of neoliberalism transformed political and economic policies, aggravated free trade and promoted the privatization of companies and free enterprise. A direct consequence was job instability, with masses amounts of unemployment prevailing, and no action nor response pursued by the state. As a result, the unemployed workers “desocupdos” came together and introduced new repertoires of action: the picketing “piquetes” and the temporary blockage of roads “corte de rutas”. The movement’s first appearance was in the Cutral-Có y Plaza Huincul in the Province of Neuquén (1996-97), extended to Salta and Jujuy (1997) and then …

Cardiovascular Disease And Type 2 Diabetes In Evolutionary Perspective: A Critical Role For Helminths?, Michael D. Gurven, Benjamin C. Trumble, Jonathan Stieglitz, Aaron D. Blackwell, David E. Michalik, Caleb E. Finch, Hillard Kaplan

ESI Publications

Heart disease and type 2 diabetes are commonly believed to be rare among contemporary subsistencelevel human populations, and by extension prehistoric populations. Although some caveats remain, evidence shows these diseases to be unusual among well-studied hunter-gatherers and other subsistence populations with minimal access to healthcare. Here we expand on a relatively new proposal for why these and other populations may not show major signs of these diseases. Chronic infections, especially helminths, may offer protection against heart disease and diabetes through direct and indirect pathways. As part of a strategy to insure their own survival and reproduction, helminths exert multiple cardio-protective …

Dependency Theory Reloaded: Exploring Baseball In The Dominican Republic, Sarah Nass

Mahurin Honors College Capstone Experience/Thesis Projects

Latin America’s presence in Major League Baseball has grown rapidly in recent years. The increase of players from the Dominican Republic can no longer be ignored. But why is Major League Baseball in the Dominican Republic? What has been the impact of Major League Baseball’s player development strategies and tactics on the people and culture of the Dominican Republic? Does the Dominican Republic need Major League Baseball to be successful? An ethnographic study was conducted in an attempt to answer these questions. This study examines the relationship between Major League Baseball and the Dominican Republic. Examining this relationship using the …

An Epigenetic Clock Analysis Of Race/Ethnicity, Sex, And Coronary Heart Disease, Steve Horvath, Michael Gurven, Morgan E. Levine, Benjamin C. Trumble, Hillard Kaplan, Hooman Allayee, Beate R. Ritz, Brian Chen, Ake T. Lu, Tammy M. Rickabaugh, Beth D. Jamieson, Dianjianyi Sun, Shengxu Li, Wei Chen, Lluis Quintana-Murci, Maud Fagny, Michael S. Kobor, Philip S. Tsao, Alexander P. Reiner, Kerstin L. Edlefsen, Devin Absher, Themistocles L. Assimes

ESI Publications

Background: Epigenetic biomarkers of aging (the “epigenetic clock”) have the potential to address puzzling findings surrounding mortality rates and incidence of cardio-metabolic disease such as: (1) women consistently exhibiting lower mortality than men despite having higher levels of morbidity; (2) racial/ethnic groups having different mortality rates even after adjusting for socioeconomic differences; (3) the black/white mortality cross-over effect in late adulthood; and (4) Hispanics in the United States having a longer life expectancy than Caucasians despite having a higher burden of traditional cardio-metabolic risk factors.

Results: We analyzed blood, saliva, and brain samples from seven different racial/ethnic groups. …

Natural Disasters In Latin America: The Role Of Disaster Type And Productive Sector On The Urban-Rural Income Gap And Rural To Urban Migration, Madeline Alice Messick

Dissertations

This research provides insight into the impact of natural disasters as drivers of rural to urban migration in Latin America and the Caribbean (LAC). Disasters of varying types are predicted to have differing impacts on the productive sectors of agriculture, industry, and services; which due to the concentration of the various productive sectors in either urban or rural areas, subsequently changes the urban-rural wage differential. Changes to the wage differential (as measured by the urban-rural income gap) are predicted to lead to movement between urban and rural areas until a new equilibrium wage is reached.

This dissertation first identifies a …

Associations Between Male Testosterone And Immune Function In A Pathogenically Stressed Forager-Horticultural Population, Benjamin C. Trumble, Aaron D. Blackwell, Jonathan Stieglitz, Melissa Emery Thompson, Ivan Maldonado Suarez, Hillard Kaplan, Michael Gurven

ESI Publications

Objectives—Despite well-known fitness advantages to males who produce and maintain high endogenous testosterone levels, such phenotypes may be costly if testosterone-mediated investment in reproductive effort trade-off against investment in somatic maintenance. Previous studies of androgen-mediated trade-offs in human immune function find mixed results, in part because most studies either focus on a few indicators of immunity, are confounded by phenotypic correlation, or are observational. Here the association between male endogenous testosterone and 13 circulating cytokines are examined before and after ex vivo antigen stimulation with phytohaemagglutinin (PHA) and lipopolysaccharides (LPS) in a high pathogen population of Bolivian forager-horticulturalists.

Materials …

Health Costs Of Reproduction Are Minimal Despite High Fertility, Mortality And Subsistence Lifestyle, Michael Gurven, Megan Costa, Ben Trumble, Jonathan Stieglitz, Bret Beheim, Daniel Eid Rodriguez, Paul L. Hooper, Hillard Kaplan

ESI Publications

Women exhibit greater morbidity than men despite higher life expectancy. An evolutionary life history framework predicts that energy invested in reproduction trades-off against investments in maintenance and survival. Direct costs of reproduction may therefore contribute to higher morbidity, especially for women given their greater direct energetic contributions to reproduction. We explore multiple indicators of somatic condition among Tsimane forager-horticulturalist women (Total Fertility Rate = 9.1; n = 592 aged 15–44 years, n = 277 aged 45+). We test whether cumulative live births and the pace of reproduction are associated with nutritional status and immune function using longitudinal data spanning 10 …

High Resting Metabolic Rate Among Amazonian Forager-Horticulturalists Experiencing High Pathogen Burden, Michael Gurven, Benjamin C. Trumble, Jonathan Stieglitz, Gandhi Yetish, Daniel Cummings, Aaron D. Blackwell, Bret Beheim, Hillard Kaplan, Herman Pontzer

ESI Publications

Objectives—Resting metabolic rate (RMR) reflects energetic costs of homeostasis and accounts for 60-75% of total energy expenditure (TEE). Lean mass and physical activity account for much RMR variability, but the impact of prolonged immune activation from infection on human RMR is unclear in naturalistic settings. We evaluate the effects of infection on mass-corrected RMR among Bolivian forager-horticulturalists, and assess whether RMR declines more slowly with age than in hygienic sedentary populations, as might be expected if older adults experience high pathogen burden.

Materials and Methods—RMR was measured by indirect calorimetry (Fitmate MED, Cosmed) in 1,300 adults aged 20-90 …

Immune Function In Amazonian Horticulturalists, Aaron D. Blackwell, Benjamin C. Trumble, Ivan Maldonado Suarez, Jonathan Stieglitz, Bret Beheim, J. Josh Snodgrass, Hillard Kaplan, Michael Gurven

ESI Publications

Background—Amazonian populations are exposed to diverse parasites and pathogens, including protozoal, bacterial, fungal, and helminthic infections. Yet much of our understanding of the immune system is based on industrialised populations where these infections are relatively rare.

Aim—We examine distributions and age-related differences in 22 measures of immune function for Bolivian forager-horticulturalists and US and European populations.

Subjects and Methods—Subjects were 6,338 Tsimane aged 0–90 years. Blood samples collected between 2004–2014 were analysed for 5-part blood differentials, C-reactive protein, erythrocyte sedimentation rate (ESR), and total immunoglobulins E, G, A, and M. Flow cytometry was used to quantify naive …

Remittances As Contributor To Risk Management And Poverty Reduction In Grenada, Dianne Jntl Rosemary Forte

Dissertations

A Small Island Development States (SIDS) viewpoint is underrepresented in the existing migration literature. That perspective is necessary because SIDS geography creates a unique set of social and economic circumstances that predisposes small states to high vulnerability to external shocks from environmental events and influences emigration decision making. Like other SIDS, Grenada is characterized by small land mass, small population, limited opportunities for productive labor, and limited resources to efficiently support all the requirements of modern institutions. This has resulted in high levels of emigration and a pattern of circularity as Grenadian households make rational decisions to manage risk and …

Del Movimiento Estudiantil A Revolución Democrática: Esperanza Está En La Institución, Jensen Handwork

Independent Study Project (ISP) Collection

The Chilean State is currently in a political era defined as the Crisis de Legitimidad (Crisis of Legitimacy) in result of extreme socioeconomic inequality and widespread political disillusionment. In 2011, a social movement led by university students became the most important movement since the democratic transition began in 1990, succeeding in re-politicizing the population. The movement started as a demand that the State offer free higher education and end various injustices in the entire education system, however, in time the movement and became a statewide expression of the frustration felt against the neo-liberal state. Over 80% of the Chilean population …

Impacts Of Ecotourism In Costa Rica: A Sustainable Alternative To Conventional Tourism, Kimberly A. Kleszczynski

Pell Scholars and Senior Theses

This ethnographic project examines the economic and social influences of tourism, specifically ecotourism, on the local communities of Costa Rica. The proposed research seeks to investigate the effects of ecotourism on the environment and quality of life for residents in Costa Rica while demonstrating the importance of sustainable development in relation to the ecotourism sector. The primary purpose of this research is to view the impact of ecotourism on Costa Rican society, with a particular focus on culture, economics, the environment, and specifically from the perspectives of local Costa Rican residents. Ultimately this paper will define what ecotourism is and …

Los Riesgos Sobre La Salud De Los Trabajadores Inmigrantes Bolivianos En Los Talleres Textiles En La Ciudad Autónoma Buenos Aires: Las Experiencias De Los Trabajadores De La Cooperativa La Alameda / The Health Risks Of Bolivian Immigrant Workers In Textile Workshops In The Autonomous City Of Buenos Aires: The Experiences Of Workers At Cooperative La Alameda, Marian Gardner

Independent Study Project (ISP) Collection

Los bolivianos inmigran a Argentina para escapar de la falta de oportunidades laborales y de la pobreza. Sin embargo, una vez en Argentina, su inserción laboral es precaria e informal, principalmente, son contratados en los talleres textiles clandestinos. En éstos , donde la mayoría de ellos también vive, se ven reducidos a condiciones de servidumbre, explotación y son sometidos a condiciones de semi esclavitud, como lo demuestran las 14 a 18 horas de trabajo que realizan los siete días de la semana por sólo alrededor de $ 1300 a $ 3000 pesos argentinos por mes. Además, las condiciones laborales suponen …

Convergence? The Incursion Of Technology In The United States - Mexico Remittance Corridor, Sam Wilner Simon

Open Access Theses & Dissertations

The United States-Mexico remittance corridor finds itself at a crossroads, exacerbated by an amalgam of factors including tapering migration levels, a more mature Mexican economy and higher levels of technological permeation. I identify the individual, governments and service providers as the three main actors in the United States - Mexico Remittance Corridor. I deploy an interdisciplinary set of sources, ranging from academic journals to World Bank datasets to illustrate the logistical hurdles that are delaying changes to what many experts believe, is an unsustainable status-quo. I explore the idea of a Galtung inspired mutually reinforcing triangle as a means of …

Indigenous Rights Policy And Terrorist Discourse: A Strategy To Stifle Mapuche Self-Determination In Chile, Reyna Mckinnon

Scripps Senior Theses

When President Sebastián Piñera entered office in 2010 the Mapuche indigenous people were receiving two contrasting messages from the Chilean State. On the one hand, the government ratified ILO Convention 169, pledging to protect the indigenous right to prior consultation in programs that affect their communities. On the other hand, the government was involved in the oppression of Mapuche communities in the region of the Araucanía through militarisation and the application of the Anti-Terrorist Law to punish radical Mapuche activists that protest corporate encroachment on their land. While Piñera had the opportunity to legitimize the Mapuche demand for self-determination by …

Heartbreak And Defiance: Stories Of Crisis In Puerto Rico, Andrea C. González-Ramírez

Capstones

No abstract provided.

The Role Of The State, Multinational Oil Companies, International Law & The International Community: Intersection Of Human Rights & Environmental Degradation Climate Change In The 21st Century Caused By Traditional Extractive Practices, The Amazon Rainforest, Indigenous People And Universal Jurisdiction To Resolve The Accountability Issue, Marcela Cabrera Luna

Master's Theses

Local, national and international conventions that protect indigenous sovereignty and their territories, where many of the resources are extracted from by multinational corporations (MNCs) particularly oil, the number one commodity of the world and cause of climate change, continue to be jeopardized because of the lack of a clear international legal framework that can protect them and potentially hold multinationals accountable for their actions. These practices are causing not only environmental issues to the indigenous and surrounding communities, but climate change is in fact, the real human rights issue of the 21^st century and it affects everyone. By using …

Helminth Infection, Fecundity, And Age Of First Pregnancy In Women, Aaron D. Blackwell, Marilyne D. Tamayo, Bret Beheim, Benjamin C. Trumble, Jonathan Stieglitz, Paul L. Hooper, Melanie Martin, Hillard Kaplan, Michael Gurven

ESI Publications

Infection with intestinal helminths results in immunological changes that influence the odds of comorbid infections, and might also affect fecundity by inducing immunological states supportive of conception and pregnancy. Here we investigate associations between intestinal helminths and fertility in human females, utilizing nine years of longitudinal data from 986 Bolivian forger-horticulturalists, experiencing natural fertility and a 70% helminth prevalence. We find that different species of helminth are associated with opposing effects on fecundity. Infection with roundworm (Ascaris lumbricoides) is associated with earlier first births and shortened interbirth intervals, while infection with hookworm is associated with delayed first pregnancy and extended …

Natural Sleep And Its Seasonal Variations In Three Pre-Industrial Societies, Gandhi Yetish, Hillard Kaplan, Michael Gurven, Brian Wood, Herman Pontzer, Paul R. Manger, Charles Wilson, Ronald Mcgregor, Jerome M. Siegel

ESI Publications

How did humans sleep before the modern era? Because the tools to measure sleep under natural conditions were developed long after the invention of the electric devices suspected of delaying and reducing sleep, we investigated sleep in three preindustrial societies[1–3]. We find that all three show similar sleep organization, suggesting that they express core human sleep patterns, likely characteristic of pre-modern era Homo sapiens. Sleep periods, the times from onset to offset, averaged 6.9–8.5-h, with sleep durations of 5.7–7.1-h, amounts near the low end of those industrial societies[4–7]. There was a difference of nearly 1-h between summer and winter sleep. …

Calcaneal Quantitative Ultrasound Indicates Reduced Bone Status Among Physically Active Adult Forager-Horticulturalists, Jonathan Stieglitz, Felicia C. Madimenos, Hillard Kaplan, Michael Gurven

ESI Publications

Six months of exclusive breastfeeding (EBF) is considered optimal for infant health, though globally most infants begin complementary feeding (CF) earlier—including among populations that practice prolonged breastfeeding. Two frameworks for understanding patterns of early CF emerge in the literature. In the first, maternal and infant needs trade-off, as “maternal-centric” factors—related to time and energy demands, reproductive investment, cultural influences, and structural barriers— favor supplanting breastfeeding with earlier and increased CF. A second framework considers that “infant-centric” factors—related to infant energetic needs—favor CF before six months to supplement breastfeeding.

We apply these two frameworks in examining early CF among the Tsimane—a …