RESUMO
INTRODUCTION: Our knowledge of the populations of sub-Saharan Africa in the periods before European colonization is limited. Few archeological sites containing human remains have been identified, and written sources for these periods are rare. The discovery in 2018 of the Iroungou sepulchral cave (Gabon), whose use predates the arrival of the Portuguese (14th-15th centuries CE), is an exceptional source of information: at least 28 individuals associated with numerous metal artifacts were found there. The anthropobiological remains were left in situ, but the eight best preserved crania were digitized. OBJECTIVES: This study focuses on the population affinities of these crania, whose morphology was described using 237 landmarks. MATERIALS AND METHODS: Geometric morphometric analyses were used to compare the eight Iroungou specimens with 154 individuals representing 12 well-defined African populations. After alignment (Generalized Procrustes Analysis), morphological affinity was assessed using Euclidean and Mahalanobis distances, and posterior probabilities of population membership (discriminant analysis). RESULTS: Results indicate that the eight Iroungou crania have, on average, more affinity with Bayaka Pygmy, followed by Central African Bantu. Nevertheless, individually, the Iroungou specimens show an important morphological variation and the eight crania can be separated into different affinity groups: Bayaka and Central African Bantu, KhoeSan, and East-African Bantu. Finally, one individual presents strong affinity with Somalis. CONCLUSION: This phenetic mapping of the Iroungou sample raises questions about the profile of the individuals deposited in the cave in a geographical area known for the Loango pre-colonial kingdom, which ruling class seemed to have had privileged relationships with the Pygmy populations.
INTRODUCTION: Nos connaissances sur les populations d'Afrique subsaharienne des périodes précédant la colonisation européenne sont limitées. Peu de sites archéologiques contenant des restes humains ont été identifiés, et les sources écrites pour ces périodes sont rares. La découverte en 2018 de la grotte sépulcrale d'Iroungou (Gabon), dont l'utilisation remonte au XIVeXVe siècles de notre ère, avant l'arrivée des Portugais, constitue une source d'information exceptionnelle: au moins 28 individus associés à de nombreux artefacts métalliques y ont été retrouvés. Les restes anthropobiologiques ont été laissés in situ, néanmoins, les huit crânes les mieux préservés ont été numérisés. OBJECTIFS: Cette étude s'intéresse aux affinités populationnelles de ces crânes, dont la morphologie a été décrite à l'aide de 237 pointsrepères répartis sur le massif facial supérieur et le calvarium. MATÉRIEL ET MÉTHODES: Des analyses par morphométrie géométrique ont permis de comparer les spécimens d'Iroungou avec 154 individus représentants 12 populations africaines bien définies. Après alignement des conformations (analyse Procrustes généralisée), l'affinité morphologique a été évaluée à l'aide des distances procrustes, euclidienne et mahalanobis, ainsi que des probabilités postérieures d'appartenance à une population (analyse discriminante). RÉSULTATS: Les résultats indiquent que les huit crânes d'Iroungou présentent en moyenne plus d'affinités avec les populations pygmées Bayaka, suivies des Bantus d'Afrique centrale. DISCUSSION: Cette affinité moyenne recouvre une réalité complexe: la population d'Iroungou est la plus hétérogène de notre échantillon et les huit crânes peuvent être séparés en différents groupes d'affinités: avec les Bayakas et les Bantus d'Afrique Centrale, les KhoeSan, et avec les Bantus d'Afrique de l'est. Enfin, un individu présente une affinité très forte avec les Somalis de notre échantillon. Cette cartographie phénétique de la population d'Iroungou interroge sur le profil des individus déposés dans la grotte dans une zone géographique connue le royaume précolonial Loango dont la classe dirigeante semble avoir eu des relations privilégiées avec les populations pygmées.
Assuntos
Cavernas , Humanos , Crânio/anatomia & histologia , Masculino , Antropologia Física , Feminino , População Negra/história , História do Século XVRESUMO
This article explores why white supremacists regard self-directed mobility by people of color as threatening by examining a controversy that unfolded in a mining town called Springs during the apartheid era in South Africa. Drawing on archives, oral histories, and testimonies, it shows how white residents of Selcourt and Selection Park, along with their allies in the town council, prevented Black workers from walking and cycling through the suburbs. Infrastructure and social disciplinary institutions proved effective in forcing Black workers to largely comply. It argues that the white supremacist disciplinary imperative against the workers arose directly from the characteristics of their mode of mobility. In their open embodiment, free from the confines of mechanized transport, and slow speeds, the workers engaged in a sustained refusal of spatial segregation. The article highlights how racial difference as an analytical category sheds light on mobility control within regimes of white supremacy.
Assuntos
Caminhada , África do Sul , História do Século XX , Humanos , Caminhada/história , População Negra/história , Ciclismo/história , Apartheid/história , Racismo/história , Relações Raciais/históriaRESUMO
Resumo Este artigo apresenta alguns resultados de uma pesquisa de mestrado cujo objetivo foi identificar as repercussões da prática da capoeira como dispositivo de cuidado e promoção da saúde para pessoas que fazem uso prejudicial de substâncias psicoativas. A pesquisa seguiu as diretrizes do método cartográfico e acompanhou, no período de 2019 a 2020, as atividades de um grupo de capoeira que ocorriam semanalmente no Centro de Atenção Psicossocial - Álcool e Outras Drogas II (CAPS AD II), parte da Rede de Atenção Psicossocial na cidade de São Paulo. Os participantes eram usuários que se interessavam por essa prática. Foram produzidos diários de campo e registros fotográficos. A prática da capoeira, como experiência afrorreferenciada, é percebida como promotora de saúde, atuando como um dispositivo de cuidado que valoriza os espaços de encontros e trocas de saberes-fazeres-sentires, incluindo aspectos coletivos, sociais, políticos, econômicos e culturais, proporcionando resgate e significado singulares. A inserção da capoeira nos serviços de saúde torna-se um dispositivo importante para expressões e posicionamentos sociais, políticos e afetivos, configurando-se também como um espaço de aproximação de singularidades, por meio da mandinga e da malícia que compõem essa grande roda.
Abstract This study describes some results of a research project for a Master's degree that aimed to find the impact of practicing capoeira as a care and health promotion device for people who make hazardous use of psychoactive substances. This research followed the guidelines of the cartographical method and followed the process of the capoeira group that took place weekly in a Psychosocial Care Center - Alcohol and Other Drugs (Caps AD II) -, which belongs to the Psychosocial Care Network in the municipality of São Paulo, from 2019 to 2020. Participants were users who were keen on such practice. Records were made using images and field diaries. The practice of capoeira as an Afro-Brazilian experience promoted health and provided care in spaces that value encounters and sharing of knowledge-doings-feelings - including the collective, the social, the political, the economic, and the cultural - of unique importance and significance. The practice of capoeira within health services becomes an important device for social, political, and affective expression and positioning and as a space for bringing together singularities by the mandinga and mischief that make up this "great roda" (gathering).
Assuntos
Esportes , Saúde Mental , Terapia Ocupacional , Cultura , Atenção à Saúde , População Negra/história , Promoção da Saúde , Serviços de Saúde MentalRESUMO
This article discusses the origin of quijila/kijila in Central West African culture, more particularly in the cultural universe of the Imbangala (Jaga) and the Ambundu and Kimbundu populations who lived in the Portuguese regions of Angola and the Congo in the seventeenth and eighteenth centuries. Following this, it investigates how the concept of quijila was structured, comprehended, and transformed, both in Africa, where it was basically a food prohibition, but whose applications and meanings varied; and in Brazil, to where it was transported in the 1700s, and where it transformed into a disease which attacked blacks, especially Africans of various origins, being framed as such in the Hippocratic-Galen universe characteristic of that time.
Este artigo discute a origem da quijila/kijila na cultura centro-ocidental africana, mais particularmente no universo cultural dos imbangalas (jagas) e das populações ambundos e kimbundos, que viviam nas regiões portuguesas de Angola e do Congo, nos séculos XVII e XVIII. Em seguida, investiga como foi estruturado, compreendido e transformado o conceito de quijila tanto na África, basicamente um interdito alimentar, mas cujos significados e aplicações variam, quanto no Brasil, para onde foi transportado nos Setecentos, transformando-se numa doença que atacava os negros, especialmente os africanos de diversas origens, sendo enquadrada pelos médicos locais no universo da medicina hipocrática-galena vigente na época.
Assuntos
População Africana , População Negra , Doença , Humanos , África/etnologia , África Ocidental/etnologia , População Africana/história , População Negra/etnologia , População Negra/história , Brasil , História do Século XVII , História do Século XVIII , Doença/etnologia , Doença/históriaRESUMO
Four historical events provide context for racial injustices and inequities in medicine in the United States today: the invention of race as a social construct, enslavement in the Americas, the legal doctrine of Partus sequitur ventrem, and the American eugenics movement. This narrative review demonstrates how these race-based systems resulted in stereotypes, myths, and biases against Black individuals that contribute to health inequities today. Education on the effect of slavery in current health care outcomes may prevent false explanations for inequities based on stereotypes and biases. These historical events validate the need for medicine to move away from practicing race-based medicine and instead aim to understand the intersectionality of sex, race, and other social constructs in affecting the health of patients today.
Assuntos
População Negra , Ginecologia , Desigualdades de Saúde , Violação de Direitos Humanos , Obstetrícia , Racismo Sistêmico , Feminino , Humanos , Gravidez , População Negra/história , Ginecologia/história , Obstetrícia/história , Racismo Sistêmico/etnologia , Racismo Sistêmico/história , Determinantes Sociais da Saúde/etnologia , Determinantes Sociais da Saúde/história , Estados Unidos , Violação de Direitos Humanos/etnologia , Violação de Direitos Humanos/históriaAssuntos
População Negra , DNA Antigo , Pessoas Escravizadas , Testes Genéticos , Genética Populacional , Genômica , Humanos , População Negra/genética , População Negra/história , DNA Antigo/análise , Pessoas Escravizadas/história , Genoma Humano , História do Século XVIII , História do Século XIX , Programas de RastreamentoRESUMO
Population size history is essential for studying human evolution. However, ancient population size history during the Pleistocene is notoriously difficult to unravel. In this study, we developed a fast infinitesimal time coalescent process (FitCoal) to circumvent this difficulty and calculated the composite likelihood for present-day human genomic sequences of 3154 individuals. Results showed that human ancestors went through a severe population bottleneck with about 1280 breeding individuals between around 930,000 and 813,000 years ago. The bottleneck lasted for about 117,000 years and brought human ancestors close to extinction. This bottleneck is congruent with a substantial chronological gap in the available African and Eurasian fossil record. Our results provide new insights into our ancestry and suggest a coincident speciation event.
Assuntos
Evolução Molecular , Genoma Humano , Dinâmica Populacional , Humanos , População Negra/genética , População Negra/história , Genômica , Fósseis , Dinâmica Populacional/história , População Europeia/genética , População Europeia/história , Asiático/genética , Asiático/históriaRESUMO
A. Wade Boykin's scholarship has provided key insights into the psychological realities of racially minoritized people and catalyzed revolutionary changes in psychology and education. Combining insights from personal and research experiences, Boykin authored the foundational triple quandary (TQ), a framework describing how Black Americans must navigate the often conflicting values and priorities of dominant mainstream society, the heritage culture of Black communities, and dynamics associated with being racially minoritized. TQ describes the unique developmental challenges faced by Black children, for whom misalignment between home cultural socialization and U.S. schooling often leads to pathologizing mischaracterizations of their attitudes and behaviors, resulting in chronic academic opportunity gaps. Boykin used his training as an experimental psychologist to empirically test the validity and explanatory utility of the TQ framework and to determine whether Black cultural values could be leveraged to improve student learning. Focusing on cultural values such as expressive movement, verve, and communalism, studies with his collaborators consistently supported Boykin's framework and predictions for improving Black student achievement-related outcomes. Beginning in the early 2000s, Boykin and his colleagues began to scale the lessons of decades of empirical work into the talent quest model for school reform. The TQ and talent quest continue to evolve in their application, as scholars and practitioners have found them relevant to a diverse range of minoritized populations in American society and beyond. Boykin's work continues to bear on the scholarship, career outcomes, and day-to-day lives of many scholars, administrators, practitioners and students across disciplines and institutions. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Negro ou Afro-Americano , Cultura , Minorias Étnicas e Raciais , Modelos Psicológicos , Psicologia , Racismo , Criança , Humanos , Sucesso Acadêmico , População Negra/educação , População Negra/história , População Negra/psicologia , Educação/história , Escolaridade , Minorias Étnicas e Raciais/educação , Minorias Étnicas e Raciais/história , Minorias Étnicas e Raciais/psicologia , História do Século XXI , Psicologia/educação , Psicologia/história , Racismo/etnologia , Racismo/psicologia , Instituições Acadêmicas , Comportamento Social/história , Estudantes/psicologia , Estados Unidos , Negro ou Afro-Americano/educação , Negro ou Afro-Americano/história , Negro ou Afro-Americano/psicologiaRESUMO
Over the past few years, there has been increased visibility of, and attention paid to, enduring issues such as racial discrimination toward Black Americans. Black psychologists have been called upon to explain various race-related mental health issues to the public, as well as their colleagues and students. Discussions about how to heal from persistent, intergenerational, oppressive attacks on the African psyche are important, but the theories and treatments in which most practitioners are trained and considered "best practices" are Eurocentric in nature. African-centered (or Africentric) psychology is a well-established school of thought, predating the philosophies often discussed in Western/American psychology's History and Systems curriculum, that provides an authentic understanding of the psychology of people of African descent from an African perspective. In this article, we present the historical contention about the lack of inclusion of an African perspective in conceptualizing and addressing the psychological needs of people of African descent, provide an overview of African-centered psychology including its underlying worldview and philosophy, development, and key contributors, and advocate for the inclusion of Africentric psychology in APA-accredited psychology graduate programs. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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População Negra , Negro ou Afro-Americano , Currículo , Trauma Histórico , Filosofia , Psicologia , Racismo Sistêmico , Humanos , Negro ou Afro-Americano/história , Negro ou Afro-Americano/psicologia , População Negra/história , População Negra/psicologia , Currículo/normas , Filosofia/história , Relações Raciais , Racismo Sistêmico/etnologia , Racismo Sistêmico/história , Racismo Sistêmico/psicologia , Trauma Histórico/etnologia , Trauma Histórico/etiologia , Trauma Histórico/psicologia , África , Psicologia/educação , Psicologia/história , Psicologia/normasRESUMO
The scientific contributions of Western mental health professionals have been lauded and leveraged for global mental health responses to varying degrees of success. In recent years, the necessity of recognizing the inefficiencies of solely etic and Western-based psychological intervention has been reflected in certain decolonial scholars like Frantz Fanon gaining more recognition. Despite this urgent focus on decolonial psychology, there are still others whose work has historically and contemporarily not received a great deal of attention. There is no better example of such a scholar than Dr. Louis Mars, Haiti's first psychiatrist. Mars made a lasting impact on the communities of Haiti by shifting the conversation around Haitian culture and the practice of how people living with a mental illness were treated. Further, he influenced the global practice of psychiatry by coining "ethnopsychiatry" and asserting that non-Western culture should be intimately considered, rather than stigmatized, in treating people around the world. Unfortunately, the significance of his contributions to ethnopsychiatry, ethnodrama, and the subsequent field of psychology has effectively been erased from the disciplinary canon. Indeed, the weight of Mars' psychiatric and political work deserves focus. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
Assuntos
População Negra , Cultura , Etnopsicologia , Transtornos Mentais , Psiquiatria , Humanos , Masculino , População Negra/história , População Negra/psicologia , Comunicação , Etnopsicologia/história , Haiti , Transtornos Mentais/etnologia , Transtornos Mentais/psicologia , Transtornos Mentais/terapia , Política , Psiquiatria/educação , Psiquiatria/história , Psiquiatria/normas , Psicologia/históriaRESUMO
Over the past century, Black American scholars have designed, applied, and promoted conceptual frameworks and research models that propose nuanced understandings of psychological development. This article highlights examples of their contributions to understanding the differential impact of diverse contextual and situational factors. Through examinations of the psychological effects of Blackness on the development of cognition, competence, identity, and social functioning, Black psychologists outline pathways and provide tools for ecological culturally rooted methodologies. These multidisciplinary approaches run in contrast to dominant trends in the field and thus broaden developmental science's reach and influence. In the 1950s, developmental research by Black psychologists was instrumental to the fight for civil rights. Today, it continues to provide a basis for advancing diversity, equity, inclusion, and justice. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
Assuntos
Negro ou Afro-Americano , Direitos Civis , Cultura , Diversidade, Equidade, Inclusão , Modelos Psicológicos , Justiça Social , Humanos , Negro ou Afro-Americano/educação , Negro ou Afro-Americano/história , Negro ou Afro-Americano/psicologia , População Negra/educação , População Negra/história , População Negra/psicologia , Direitos Civis/história , Direitos Civis/psicologia , Cognição , Estudos Interdisciplinares , Diversidade Cultural , Justiça Social/educação , Justiça Social/história , Justiça Social/psicologia , Estados Unidos , História do Século XX , História do Século XXIRESUMO
Multiple lines of genetic and archaeological evidence suggest that there were major demographic changes in the terminal Late Pleistocene epoch and early Holocene epoch of sub-Saharan Africa1-4. Inferences about this period are challenging to make because demographic shifts in the past 5,000 years have obscured the structures of more ancient populations3,5. Here we present genome-wide ancient DNA data for six individuals from eastern and south-central Africa spanning the past approximately 18,000 years (doubling the time depth of sub-Saharan African ancient DNA), increase the data quality for 15 previously published ancient individuals and analyse these alongside data from 13 other published ancient individuals. The ancestry of the individuals in our study area can be modelled as a geographically structured mixture of three highly divergent source populations, probably reflecting Pleistocene interactions around 80-20 thousand years ago, including deeply diverged eastern and southern African lineages, plus a previously unappreciated ubiquitous distribution of ancestry that occurs in highest proportion today in central African rainforest hunter-gatherers. Once established, this structure remained highly stable, with limited long-range gene flow. These results provide a new line of genetic evidence in support of hypotheses that have emerged from archaeological analyses but remain contested, suggesting increasing regionalization at the end of the Pleistocene epoch.
Assuntos
População Negra , DNA Antigo , Genética Populacional , África Subsaariana , Arqueologia , População Negra/genética , População Negra/história , DNA Antigo/análise , Fluxo Gênico/genética , Genoma Humano/genética , História Antiga , HumanosRESUMO
After the European colonization of the Americas, there was a dramatic population collapse of the Indigenous inhabitants caused in part by the introduction of new pathogens. Although there is much speculation on the etiology of the Colonial epidemics, direct evidence for the presence of specific viruses during the Colonial era is lacking. To uncover the diversity of viral pathogens during this period, we designed an enrichment assay targeting ancient DNA (aDNA) from viruses of clinical importance and applied it to DNA extracts from individuals found in a Colonial hospital and a Colonial chapel (16th-18th century) where records suggest that victims of epidemics were buried during important outbreaks in Mexico City. This allowed us to reconstruct three ancient human parvovirus B19 genomes and one ancient human hepatitis B virus genome from distinct individuals. The viral genomes are similar to African strains, consistent with the inferred morphological and genetic African ancestry of the hosts as well as with the isotopic analysis of the human remains, suggesting an origin on the African continent. This study provides direct molecular evidence of ancient viruses being transported to the Americas during the transatlantic slave trade and their subsequent introduction to New Spain. Altogether, our observations enrich the discussion about the etiology of infectious diseases during the Colonial period in Mexico.
The arrival of European colonists to the Americas, beginning in the 15th century, contributed to the spread of new viruses amongst Indigenous people. This led to massive outbreaks of disease, and millions of deaths that caused an important Native population to collapse. The exact viruses that caused these outbreaks are unknown, but smallpox, measles, and mumps are all suspected. During these times, traders and colonists forcibly enslaved and displaced millions of people mainly from the West Coast of Africa to the Americas. The cruel, unsanitary, and overcrowded conditions on ships transporting these people across the Atlantic contributed to the spread of infectious diseases onboard. Once on land, infectious diseases spread quickly, partly due to the poor conditions that enslaved and ndigenous people were made to endure. Native people were also immunologically naïve to the newly introduced pathogens, making them susceptible to severe or fatal outcomes. The new field of paleovirology may help scientists identify the viruses that were circulating in the first years of colonization and trace how viruses arrived in the Americas. Using next-generation DNA sequencing and other cutting-edge techniques, Guzmán-Solís et al. extracted and enriched viral DNA from skeletal remains dating back to the 16th century. These remains were found in mass graves that were used to bury epidemic victims at a colonial hospital and chapel in what is now Mexico City. The experiments identified two viruses, human parvovirus B19 and a human hepatitis B virus. These viral genomes were recovered from human remains of first-generation African people in Mexico, as well as an individual who was an Indigenous person. Although the genetic material of these ancient viruses resembled pathogens that originated in Africa, the study did not determine if the victims died from these viruses or another cause. On the other hand, the results indicate that viruses frequently found in modern Africa were circulating in the Americas during the slave trade period of Mexico. Finally, the results provide evidence that colonists who forcibly brought African people to the Americas participated in the introduction of viruses to Mexico. This constant influx of viruses from the old world, led to dramatic declines in the populations of Indigenous people in the Americas.
Assuntos
DNA Antigo/análise , Pessoas Escravizadas/história , Genoma Viral/genética , Vírus da Hepatite B/genética , Parvovirus B19 Humano/genética , População Negra/história , Vírus da Hepatite B/isolamento & purificação , Sequenciamento de Nucleotídeos em Larga Escala , História do Século XVI , História do Século XVII , História do Século XVIII , Humanos , Metagenômica , Parvovirus B19 Humano/isolamento & purificaçãoRESUMO
We talk to Sigourney Bell and Henry J. Henderson about what motivated them to found Black in Cancer, the importance of community and representation, as well as the resources the organization provides, future directions, and how we and our readers can provide support.
Assuntos
Pesquisa Biomédica/história , População Negra/história , Oncologia/história , Neoplasias/história , Disparidades nos Níveis de Saúde , Disparidades em Assistência à Saúde/etnologia , Disparidades em Assistência à Saúde/história , História do Século XXI , Humanos , Neoplasias/diagnóstico , Neoplasias/etnologia , Fatores Raciais , Racismo/etnologia , Racismo/históriaRESUMO
Historically, the terms African American and Black have been used interchangeably to describe any person with African ancestry living in the United States. However, Black Americans are not a monolith, and legitimate differences exist between those with generational roots in the United States and either African or Caribbean immigrants. American descendants of slavery (ADOS) are underrepresented in many fields, but I have noticed during my decades long career in global health that they are acutely absent in this field. Here, I offer seven recommendations to improve recruitment, retention, and advancement of ADOS in the global health field. Immediate implementation of these recommendations will not only bring diverse perspectives and immense capacity to the field but also allow ADOS an opportunity to engage in compelling and meaningful work and to collaborate with those from their ancestral homelands.
Assuntos
População Negra/etnologia , Negro ou Afro-Americano/etnologia , Escravização/história , Saúde Global/etnologia , Mão de Obra em Saúde/organização & administração , África , Negro ou Afro-Americano/psicologia , População Negra/história , População Negra/psicologia , Região do Caribe , Emigrantes e Imigrantes/psicologia , Saúde Global/ética , Mão de Obra em Saúde/ética , História do Século XVIII , História do Século XIX , Humanos , Estados Unidos , Índias OcidentaisRESUMO
During the first half of the 20th century, extraordinary high jumping performances of East-African athletes were observed. These athletes used a specific native jumping style called Gusimbuka Urukiramende. Eye-witnesses believed that these performances could have been world-records and that these athletes could have competed at the Olympics. However, these athletes never participated in international competitions and there is no other proof to support these performance claims. We have analysed historical photos and cine sequences of these jumps, documented the movement analysis of this technique, quantified performance and compared it to contemporaneous elite performances. Our analyses demonstrate that Gusimbuka Urukiramende athletes did not jump as high as the world record. Nevertheless, even though they used a suboptimal jump technique (because they had to lift their bodies higher to cross the bar) they could cross bar heights of 188 cm or 106% body height and as such their performance still was worthy of participation to the Olympics.
Assuntos
Desempenho Atlético/fisiologia , Atletismo/fisiologia , África Oriental , Desempenho Atlético/história , População Negra/história , História do Século XX , Humanos , Masculino , Análise e Desempenho de Tarefas , Atletismo/históriaRESUMO
Previous studies show that the indigenous people of the southern Cape of South Africa were dramatically impacted by the arrival of European colonists starting ~400 years ago and their descendants are today mixed with Europeans and Asians. To gain insight on the occupants of the Vaalkrans Shelter located at the southernmost tip of Africa, we investigated the genetic make-up of an individual who lived there about 200 years ago. We further contextualize the genetic ancestry of this individual among prehistoric and current groups. From a hair sample excavated at the shelter, which was indirectly dated to about 200 years old, we sequenced the genome (1.01 times coverage) of a Later Stone Age individual. We analyzed the Vaalkrans genome together with genetic data from 10 ancient (pre-colonial) individuals from southern Africa spanning the last 2000 years. We show that the individual from Vaalkrans was a man who traced ~80% of his ancestry to local southern San hunter-gatherers and ~20% to a mixed East African-Eurasian source. This genetic make-up is similar to modern-day Khoekhoe individuals from the Northern Cape Province (South Africa) and Namibia, but in the southern Cape, the Vaalkrans man's descendants have likely been assimilated into mixed-ancestry "Coloured" groups. The Vaalkrans man's genome reveals that Khoekhoe pastoralist groups/individuals lived in the southern Cape as late as 200 years ago, without mixing with non-African colonists or Bantu-speaking farmers. Our findings are also consistent with the model of a Holocene pastoralist migration, originating in Eastern Africa, shaping the genomic landscape of historic and current southern African populations.
Assuntos
População Negra/genética , Etnicidade/genética , Genética Populacional/métodos , Cabelo/química , Antropologia Física , População Negra/história , Etnicidade/história , Genoma Humano/genética , História do Século XIX , História Antiga , Migração Humana/história , Humanos , Polimorfismo de Nucleotídeo Único/genética , África do SulRESUMO
Africa is the continent with the greatest genetic diversity among humans and the level of diversity is further enhanced by incorporating non-majority groups, which are often understudied. Many of today's minority populations historically practiced foraging lifestyles, which were the only subsistence strategies prior to the rise of agriculture and pastoralism, but only a few groups practicing these strategies remain today. Genomic investigations of Holocene human remains excavated across the African continent show that the genetic landscape was vastly different compared to today's genetic landscape and that many groups that today are population isolate inhabited larger regions in the past. It is becoming clear that there are periods of isolation among groups and geographic areas, but also genetic contact over large distances throughout human history in Africa. Genomic information from minority populations and from prehistoric remains provide an invaluable source of information on the human past, in particular deep human population history, as Holocene large-scale population movements obscure past patterns of population structure. Here we revisit questions on the nature and time of the radiation of early humans in Africa, the extent of gene-flow among human populations as well as introgression from archaic and extinct lineages on the continent.
Assuntos
População Negra/genética , População Negra/história , DNA/história , Genética Populacional/métodos , África , Agricultura/história , Fluxo Gênico , Variação Genética , Genoma Humano , História Antiga , HumanosRESUMO
Resumen La memoria colectiva afirmativa se compone de significados y emociones positivas que por efecto del recuerdo enlazan a una comunidad. El propósito de este estudio fue conocer la memoria afirmativa de la comunidad afrocolombiana de La Balsa, Cauca, que vivió el conflicto armado durante diez años. Es un estudio cualitativo descriptivo que utilizó la técnica de entrevistas individuales con 6 personas y grupos focales con 99 personas. Se realizó un análisis de contenido. Como hallazgos encontramos que los balseños otorgan un papel decisivo a su memoria afirmativa, que exalta sus orígenes ancestrales, familiares, sus prácticas culturales, la etno educación y procesos vigorosos de organización social, que les otorgó un nuevo lugar como agentes sociales. Se concluye que la memoria afirmativa proporciona recursos simbólicos y emocionales para que las comunidades inventen formas de resistencia ciudadana y se reparen de situaciones de violencia, como el caso de la comunidad balseña.
Resumo A memória coletiva afirmativa é composta de significados positivos e emoções que, através do efeito da memória, ligam uma comunidade. O objetivo deste estudo foi conhecer a memória afirmativo da comunidade afro-colombiana de La Balsa, Cauca, que viveu o conflito armado colombiano durante dez anos. Trata-se de um estudo descritivo qualitativo, que utilizou a técnica de entrevistas individuais com 6 pessoas e grupos focais com 99 pessoas. Uma análise de conteúdo foi realizada. Entre os resultados, se tem que os "balseños" concedem um rol decisivo à sua memória afirmativa, exaltando suas origens ancestrais e familiares, práticas culturais, educação étnica e processos vigorosos de organização social que lhes deu um novo lugar como agentes sociais. A principal conclusão foi que a memória afirmativa fornece recursos simbólicos e emocionais para que as comunidades inventem formas de resistência cidadã e reparem as situações de violência, como no caso da comunidade "balseña".
Abstract The affirmative collective memory is composed of positive meanings and emotions that, as a result of memory, link a community. The purpose of this study was to know the affirmative memory of the Afro-Colombian community of La Balsa, Cauca, which lived through the armed conflict for ten years. It is a descriptive qualitative study that used the technique of individual interviews with 6 people and focal groups with 99 people. A content analysis was carried out. We find that the balseños give a decisive role to their affirmative memory, which exalts their ancestral and family origins, their cultural practices, ethno-education and vigorous processes of social organization, which gave them a new place as social agents. It is concluded that affirmative memory provides symbolic and emotional resources for the communities to invent forms of citizen resistance and recover from situations of violence, such as the case of the "Balseña" community.