Crews, Dr. Douglas Earl, Ohio State U., Columbus, OH - To aid research on 'Frailty and Allostatic Load among Aging Japanese'
DR. DOUGLAS EARL CREWS, Ohio State University, Columbus, Ohio, was awarded a grant in May 2008, to aid research on 'Frailty and Allostatic Load among Aging Japanese.' Residents of Sakiyama City were chosen for this study of how allostatic load and frailty are related to health and morbidity among elderly residents of a more traditional and isolated community. The study obtained sufficient data to examine allostatic load and frailty as correlates of morbidity, physiological function, fertility and aging in elderly Japanese samples living more traditional and less traditional life styles within Sakiyama City. Detailing cross-cultural variation in allostatic load and frailty enhances our interpretations of how biological aspects of senescence may structure health at the latest ages of human life. Determining allostatic load and frailty in an age-stratified sample of Japanese elders also aids in resolving the female-male health paradox, wherein elderly women frequently report poorer health than same-aged men, while same-age men suffer higher mortality. These data allow us to determine whether fertility significantly burdens women's health outcomes. By working directly with physicians engaged in providing health care to participants, the benefits of ongoing research on biomarkers of stress, function, and somatic abilities to clinical interventions and health maintenance setting is directly tested.
Paschetta, Carolina Andrea, U. Nacional de Rio Cuarto, Puerto Madryn, Argentina - To aid research on 'Dietary Shifts During Modem Human Evolution and their Effect on Craniofacial Size and Shape,' supervised by Dr. Rolando Gonzalez-Jose
Preliminary abstract: The craniofacial phenotype can suffer changes promoted by epigenetic or environmental factors. Among them, masticatory mechanical stress is perhaps one of the most important epigenetic stimuli which acted during the recent evolution of our species. In particular, technological transition from hunting-gathering is invoked to be concomitant with a significant reduction of masticatory stress. The main objective is quantify the differences in modern human samples with different economic strategies (hunter/gatherers, farmers, etc.), not only in the overall skull morphology, as well as in localized structures, in order to detect common, recurrent changes in craniofacial size and shape due to environmental stimuli. A geometric morphometrics techniques will be used to track these changes on at least three cases of economic transitions on New World populations. Changes observed in concomitance on all the transitions will be, in consequence, postulated as good candidates of plastic structures which probably promoted rapid evolution of modern humans across different adaptive (dietary, nutritional) shifts.
Rosinger, Asher Yoel, U. of Georgia, Athens, GA - To aid research on 'Hydration Strategies, Nutrition, and Health During a Lifestyle Transition in the Bolivian Amazon,' supervised by Dr. Susan Tanner
ASHER Y. ROSINGER, then a student at University of Georgia, Athens, Georgia, received a grant in April 2013 to aid research on 'Hydration Strategies, Nutrition, and Health during a Lifestyle Transition in the Bolivian Amazon,' supervised by Dr. Susan Tanner. Currently, many Amazonian populations are undergoing a period of rapid change in lifestyle through increased market participation and dietary changes, yet the search for clean water remains a critical problem facing many of these populations. The social sciences emphasize that when populations undergo lifestyle transitions, health, disease patterns, and body composition are affected. Lifestyle transitions may create a mismatch between hydration strategies and the nutritional landscape. This research found that Tsimane' have flexible hydration strategies that rely on their environment for water. Increased water intake from foods was associated with a decreased risk of diarrheal illness among adults, which may represent a nutritional adaptation to an environment with limited access to clean water. Tsimane' who lived in a market integrated community were significantly more dehydrated than Tsimane' living in a traditional community. These findings contribute to human biology theory by suggesting that lifestyle transitions may create conditions that increase vulnerability to dehydration among rural populations. Additionally, lactating women were significantly more dehydrated than non-lactating women controlling for environmental and lifestyle factors. This work illustrates the nutritional challenges lactating women face in stressful physical environments and raises evolutionary questions dealing with maternal buffering during chronic dehydration.
Rosinger, Asher. 2014. Water from Fruit or the River? Examining Hydration Strategies and Gastrointestinal Illness among Tsimane' Adults in the Bolivan Amazon. Public Health Nutrition. (Published Online, DOI 10.1017/s1368980014002158)
Rosinger, Asher. 2014. Dehydration among Lactating Mothers in the Amazon: A Neglected Problem. American Journal of Human Biology. (Published Online.DOI 10.1002/ajhb.22672)
Miller, Dr. Elizabeth Marie, U. of South Florida, Tampa, FL - To aid research on 'Ecology of the Human Milk and Infant Salivary Microbiomes'
Preliminary abstract: Biological anthropologists hypothesize that early life microbial exposures are critical for the development of the immune system, with the evolved flexibility of the human immune response helping acclimate infants to their unique environment. One major pathway to exposure is via mothers' milk, which passes microbes to infants via breast milk in a dynamic, co-influential system. I propose to study the human milk and infant salivary microbiome of breastfeeding Kenyan mother-infant pairs, by 1) characterizing milk and infant salivary microbiomes, 2) exploring relationships between milk and infant salivary microbiomes to determine how much they influence each other, 3) determining which ecological factors are associated with these microbiomes, and 4) how the immune system of mother's milk and infant saliva interacts with their respective microbiomes. Milk and saliva samples previously collected from a rural Kenyan population will be sequenced for operational taxonomic units and relative abundance of microbial communities using 16s RNA techniques, and analyzed statistically using taxonomically appropriate methods. I predict a core microbiome will be identifiable in the milk and saliva that is distinct from previously documented US populations, that there will be an association between maternal milk and infant saliva microbiomes, and that immunological and ecological factors such as culturally-appropriate foods and maternal-infant behaviors will influence microbiome diversity. This research contributes to anthropological scholarship by overturning widely held beliefs that infants are receptacles for the 'passive' immunity of mothers' milk, and by using the maternal-infant microbiome as a lens through which larger cultural and ecological patterns may be observed.
Oyhenart, Dr. Evelia Edith, U. Nacional de La Plata, Buenos Aires, Argentina - To aid 'Tenth Meeting of the Latin American Association of Biological Anthropology,' 2008, Buenos Aires, in collaboration with Dr. Hector M. Pucciarelli
'Tenth Meeting of the Latin American Association of Biological Anthropology'
October 20-23, 2008, Universidad Nacional de la Plata, Buenos Aires, Argentina
Organizers: Evelia E. Oyhenart (U. Nacional de La Plata) and Hector M. Pucciarelli (Museo de la Plata, Buenos Aires)
More that 350 students and professionals from all over Latin America attended the Tenth Meeting of the Latin American Association of Biological Anthropology. The conference's goal was to bring distinguished Latin American scholars from the field of biological anthropology field, to a collegial environment where students and professional could meet and establish connections to promote future collaborative research. Topics of discussion included 'Human Growth in Nutritional, Epidemiological, and Demographical Transition' and 'New Research on the Peopling of the Americas.' Also a panel of experts from various fields discussed the different ways genetic data were being merged with physical anthropology, archaeology, linguistics, and other disciplines to help build a clearer picture of the human past.
Hodges-Simeon, Carolyn Randolph, U. of California, Santa Barbara, CA - To aid research on 'Life History Trade-offs Affecting the Development of Human Sexual Dimorphism,' supervised by Dr. Steven J. Gaulin
CAROLYN R. HODGES-SIMEON, then a student at University of California, Santa Barbara, California, was awarded a grant in October 2010 to aid research on 'Life History Trade-Offs Affecting the Development of Human Sexual Dimorphism,' supervised by Dr. Steven J. Gaulin. The human vocal voice is sexually dimorphic in two primary ways: males have lower 'fundamental frequency' (F0, the perceptual correlate of which is 'pitch') and more closely spaced 'formant position' (Pf; also termed 'resonance'). These characteristics exhibit a pronounced and abrupt change during adolescence, marking the advancement of puberty. Research and data gathering target the developmental associations between dimorphic vocal characteristics (F0 and Pf), testosterone, immune functioning (secretory IgA and CRP), and energetic status (BMI and height) in adolescent boys in a non-industrialized population: the Tsimane' of lowland Bolivia. In doing so, this project uses the ontogeny of male vocal characteristics as a model system for examining two major theories in human evolutionary biology: 1) Life history theory (by examining trade-offs between reproductive and somatic investment); and 2) Immunocompetence handicap theory of sexual selection (by investigating whether sexually dimorphic signals are honest indicators of immunocompetence). Results indicate that males in better condition -- with better energetic and immune investment -- have higher testosterone levels, which are associated with lower voices. This research presents the first evidence that male vocal features are linked with condition, and that this association is mediated by testosterone.
Middleton, Emily Ruth, New York U., New York, NY - To aid research on 'Ecogeographical Influences on Trunk Modularity in Recent Humans: Colonization and Morphological Integration,' supervised by Dr. Susan C. Anton
EMILY R. MIDDLETON, then a student at New York University, New York, New York, received funding in April 2013 to aid research on 'Ecogeographical Influences on Trunk Modularity in Recent Humans: Colonization and Morphological Integration,' supervised by Dr. Susan C. Antón. The ribcage, vertebral column, and pelvis have undergone numerous shape changes throughout hominin evolutionary history, responding to a wide suite of locomotor, obstetric, and climatic selective pressures. The degree to which morphological elements are integrated, or covary, has important implications for the way body form evolves, and this project seeks to understand the pattern of morphological integration in the trunk skeletons of modern humans and our closest living relatives. Most studies of integration focus on interspecific comparisons, but this project specifically investigates how intraspecific variation due to ecogeography and sex affect integration. Skeletal data were collected from a range of modern human populations and from multiple chimpanzee taxa. Preliminary results suggest support for the research hypotheses, with humans possessing weaker relationships among skeletal trunk elements than chimpanzees, which may have contributed to the successful colonization of diverse global environments by modern humans. In addition, human females appear to possess slightly weaker patterns of trunk integration than human males, which may relate to the protection of obstetric dimensions of the bony pelvis in the face of conflicting selective pressures. Additional data analyses are ongoing to further elucidate aspects of the pattern of trunk integration in modern humans and chimpanzees.
Fried, Ruby L., Northwestern U., Evanston, IL - To aid research on 'Intergenerational Impacts of Culture Change: Traditional Food and the Metabolic Functioning of Alaska Native Peoples,' supervised by Dr. Christopher Kawaza
Preliminary abstract: Anthropological studies conducted from Samoa to Siberia have demonstrated consequences of cultural change on human biological variation. Findings point to market integration, 'Westernization,' 'acculturation,' and other social transitions as determinants of changes in diet and lifestyle that lead to increased obesity and metabolic dysregulation in affected populations. While the majority of this research has focused on the direct impacts of such shifts on adult biology, recent work is focusing attention on early life critical periods when experiences can lead to durable biological changes that alter developmental biology and long-term health. As a recent manifestation of this idea, rising rates of maternal obesity, gestational weight gain (GWG), and high blood glucose and triglycerides may be creating an evolutionarily novel, gestational milieu that promotes faster fetal growth, higher birth weights, adiposity, and metabolic dysregulation in offspring. This emerging evidence supports a new hypothesis: the impacts of culture change on human biology do not end with the individual who directly experiences it, but may also be transmitted, via an altered in utero environment, to the next generation. The proposed study aims to test this model of an intergenerational impact of culture change among Alaska Native mother-infant dyads by comparing dietary intake (traditional vs. Western foods) with maternal obesity, GWG, pregnancy metabolism and fetal/infancy growth and adiposity in offspring. Recent and still ongoing cultural and dietary transitions among Alaska Native groups provide a valuable opportunity to evaluate maternal metabolism as a pathway linking rapid culture change with altered growth, body composition and health outcomes in offspring.
Downey, Dr. Greg, Macquarie U., Ryde, Australia - To aid research and writing on 'Homo Athleticus: Comparative Sports and Human Physiological Diversity' - Richard Carley Hunt Fellowship
DR. GREG DOWNEY, Macquarie University, Sydney, Australia, was awarded a Hunt Postdoctoral Fellowship in 2006 to aid research and writing on 'The Athletic Animal: Sports and Human Potential.' The book uses a wide range of research on athletes from across many cultures - from Kenyan runners and Korean pearl divers, to no-holds-barred fighters in Brazil and Korean archers - to highlight how humans drive their own physiological and neurological development into distinctive configurations through training regimens, especially running, climbing, throwing, fighting, hitting, and other sports-related activities. Although athletes are extreme examples, they illustrate clearly how culture, patterns of behaviour, training, and body ideals have tangible effects on our bodies and brains. Based in dynamic systems theory and reappraisals of phenotypic plasticity, the book attempts to demonstrate a problem-driven synthesis of findings from both biological and cultural anthropology. Growing out of the research related to this book were also several articles, including one that explored how coaching in the Afro-Brazilian martial art and dance, capoeira, facilitates novices' acquisition of their own idiosyncratic movement techniques, and another on the relation of the 'mirror neuron' system in the human brain to imitative learning in skill acquisition.
Downey, Greg. 2008. Scaffolding Imitation in Capoeira: Physical Education and Enculturation in an Afro-Brazilian Art. American Anthropologist 110(2):204-213
Downey, Greg. 2010. 'Practice without Theory': A Neuroanthropological Perspective on Embodied Learning. Journal of the Royal Anthropological Institute (N.S.):S22-S40.