A5059360671- Evolutionary Psychology and Human Behavior
- Stress Responses and Cortisol
- Neuroendocrine regulation and behavior
- Rangeland Management and Livestock Ecology
- Primate Behavior and Ecology
- Animal Behavior and Reproduction
- Hormonal and reproductive studies
- Demographic Trends and Gender Preferences
- Marriage and Sexual Relationships
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Evolutionary Game Theory and Cooperation
- Adrenal Hormones and Disorders
- Genetic Associations and Epidemiology
- Cultural Differences and Values
- Vaccine Coverage and Hesitancy
- Family Dynamics and Relationships
- Social Representations and Identity
- Conservation, Biodiversity, and Resource Management
- Adolescent Sexual and Reproductive Health
- Evolution and Genetic Dynamics
- Anthropological Studies and Insights
- Community Health and Development
- Dietary Effects on Health
- Clinical Reasoning and Diagnostic Skills
- Genetic Syndromes and Imprinting
University of Missouri
2019-2024
University of California, Los Angeles
2017-2024
Indiana University Bloomington
2012-2017
The University of Texas at San Antonio
2017
University of Washington
2017
Nature-based tourism can generate important revenue to support conservation of biodiversity. However, constant exposure tourists and subsequent chronic activation stress responses produce pathological effects, including impaired cognition, growth, reproduction, immunity in the same animals we are interested protecting. Utilizing fecal samples (N = 53) from 2 wild habituated orangutans (Pongo pygmaeus morio) (in addition 26 4 unhabituated orangutans) Lower Kinabatangan Wildlife Sanctuary...
The intensifying pace of research based on cross-cultural studies in the social sciences necessitates a discussion unique challenges multi-sited research. Given an increasing demand for scientists to expand their data collection beyond WEIRD (Western, educated, industrialized, rich and democratic) populations, there is urgent need transdisciplinary conversations logistical, scientific ethical considerations inherent this type scholarship. As group engaged psychology anthropology, we hope...
Although parasitic organisms are found worldwide, the relative importance of host specificity and geographic isolation for parasite speciation has been explored in only a few systems. Here, we study Plasmodium parasites known to infect Asian nonhuman primates, monophyletic group that includes lineage leading human vivax several species used as laboratory models malaria research. We analyze available data together with new samples from three sympatric primate Borneo: The Bornean orangutan...
Himba have an extrapair paternity rate of 48% with both men and women highly accurate at detecting cases EPP.
While it is commonly assumed that farmers have higher, and foragers lower, fertility compared to populations practicing other forms of subsistence, robust supportive evidence lacking. We tested whether subsistence activities-incorporating market integration-are associated with in 10,250 women from 27 small-scale societies found considerable variation fertility. This did not align group-level typologies. Societies labeled as "farmers" higher than others, while "foragers" lower However, at the...
Substantial evidence indicates that medical mistrust, resulting from experiences with discrimination and marginalisation, is a determinant of health disparities in minority populations. However, this research largely limited to the US other industrialised countries. To broaden our understanding role mistrust on health-care decision making, we conducted study healthcare perceptions rural, underserved indigenous community northwest Namibia (n = 86). Mixing semi-structured interview questions...
Abstract Aging is associated with genome-wide changes in DNA methylation humans, facilitating the development of epigenetic age prediction models. However, most these models have been trained primarily on European-ancestry individuals, and none account for impact quantitative trait loci (meQTL). To address gaps, we analyzed relationships between age, genotype, CpG 3 understudied populations: central African Baka (n = 35), southern ‡Khomani San 52), Himba 51). We find that published methods...
In social mammals, condition and health are important determinants of the ability males to achieve high dominance rank. Measures individual also predicted affect male fitness via female preference for high-quality mates. We examined intermale variation in phenotypic quality (immune function oxidative stress) relation status mating success a species with prominent choice lack male–female sexual coercion, rhesus macaque (Macaca mulatta). quantified immunity 2 functional assays innate immune...
Recessive alleles have been shown to directly affect both human Mendelian disease phenotypes and complex traits. Pedigree studies also suggest that consanguinity results in increased childhood mortality adverse health phenotypes, presumably through penetrance of recessive mutations. Here, we test whether the accumulation homozygous, decreases reproductive success a population. We address this question among Namibian Himba, an endogamous agro-pastoralist population, who until very recently...
Abstract Objectives Following predictions from life history theory, we sought to identify acute trade‐offs between reproductive effort (as measured by psychological arousal) and somatic maintenance (via functional measures of innate immunity) during conditions severe energetic imbalance. Methods Sixty‐six male ultramarathon runners (ages 20 37 years) were sampled before after a lengthy race. Saliva sera collected for testosterone immunological analyses (hemolytic complement activity...
Paternal investment is predicted to be a facultative calculation based on expected fitness returns and modulated by host of social predictors including paternity uncertainty. However, the direct role confidence patterns paternal relatively unknown, in part due lack research populations with high levels Additionally, much work certainty uses cues rather than assessments from fathers. We examine effect assertions multiple measures Himba pastoralists. Despite degree uncertainty, have strong...
The gender-specific labor demands of arid pastoralism often lead to spousal separation. Men typically respond in one two ways: engage mate guarding tactics, or loosen restrictions on female sexuality. Among Himba pastoralists northwest Namibia, the latter strategy is dominant. Rooted a history matriliny, have strong norms promoting sexual autonomy. We propose that these conditions, combined with stochastic resource base, led women utilizing combination formal and informal partnerships meet...
Despite the implications for development of life‐history traits, endocrine–immune trade‐offs in apes are not well studied. This is due, part, to difficulty sampling wild primates, and lack methods available immune measures using samples collected noninvasively. Evidence androgen‐mediated orangutans virtually absent, very little known regarding their pattern adrenal production androgens. To remedy both these deficiencies, sera were from ( Pongo pygmaeus morio ) N = 38) at Sepilok Orangutan...
Abstract The androgen dehydroepiandrosterone (DHEA) responds to stress activation, exhibits anti‐glucocorticoid properties, and modulates immunity in diverse ways, yet little is known of its role acute responses. In this study, the effects DHEA sulfate ester DHEA‐S on human male immune function during exposure an stressor explored. Variation DHEA, DHEA‐S, testosterone, cortisol, along with bacterial killing assays, was measured response a modified Trier Social Stress test 27 young adult...
Matrilineal systems in sub-Saharan Africa tend to co-occur with horticulture and are rare among pastoralists, the causal arrow pointing from introduction of cattle loss matriliny. However, most work on this topic stems either phylogenetic analyses or historical data. To better understand shift matrilineal patrilineal inheritance that occurred Bantu populations after adoption pastoralism, data societies currently transition needed. Himba who practice 'double descent', may represent one such...
Abstract Objectives Humans—and several other apes—exhibit a unique pattern of post‐natal adrenal maturation; however, the causes and consequences variation in development are not well understood. In this study, we examine developmental age‐related maturation gland (measured via dehydroepiandrosterone‐sulfate [DHEA‐S]) for potential life‐history associations with growth mucosal immunity rural population immune‐challenged Bolivian juveniles adolescents. METHODS Salivary DHEA‐S,...
Across cultures, fosterage has been shown to impact child health. Contextual factors, such as the reason for and relationship between foster parent child, are known magnify variance in nutritional outcomes children. Another important, but less studied, factor is role of gender. Sex-biases physiology cultural norms both affect nutrition, we posit these effects might be magnified presence fosterage. In this study, investigate how sex interacts with among Namibian pastoralists.Anthropometrics...
Objectives Human immune function is strongly influenced by variation in hormone concentrations. The adrenal androgens dehydroepiandrosterone (DHEA) and dehydroepiandrosterone‐sulfate (DHEA‐S) are thought to be beneficial disease resistance, but physiologically interact with testosterone cortisol. We predict that DHEA DHEA‐S will these other hormones determining immunological outcomes. Understanding the interactive effects of aid understanding variability immunocompetence clarify...