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Daniels RJ, D'Amato ME, Lesaoana M, Kasu M, Ehlers K, Chauke PA, Lecheko P, Challis S, Rockett K, Montinaro F, González-Santos M, Capelli C. Genetic heritage of the Baphuthi highlights an over-ethnicized notion of "Bushman" in the Maloti-Drakensberg, southern Africa. Am J Hum Genet 2023; 110:880-894. [PMID: 37105174 PMCID: PMC10183465 DOI: 10.1016/j.ajhg.2023.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 03/27/2023] [Indexed: 04/29/2023] Open
Abstract
Using contemporary people as proxies for ancient communities is a contentious but necessary practice in anthropology. In southern Africa, the distinction between the Cape KhoeSan and eastern KhoeSan remains unclear, as ethnicity labels have been changed through time and most communities were decimated if not extirpated. The eastern KhoeSan may have had genetic distinctions from neighboring communities who speak Bantu languages and KhoeSan further away; alternatively, the identity may not have been tied to any notion of biology, instead denoting communities with a nomadic "lifeway" distinct from African agro-pastoralism. The Baphuthi of the 1800s in the Maloti-Drakensberg, southern Africa had a substantial KhoeSan constituency and a lifeway of nomadism, cattle raiding, and horticulture. Baphuthi heritage could provide insights into the history of the eastern KhoeSan. We examine genetic affinities of 23 Baphuthi to discern whether the narrative of KhoeSan descent reflects distinct genetic ancestry. Genome-wide SNP data (Illumina GSA) were merged with 52 global populations, for 160,000 SNPs. Genetic analyses show no support for a unique eastern KhoeSan ancestry distinct from other KhoeSan or southern Bantu speakers. The Baphuthi have strong affinities with early-arriving southern Bantu-speaking (Nguni) communities, as the later-arriving non-Nguni show strong evidence of recent African admixture possibly related to late-Iron Age migrations. The references to communities as "San" and "Bushman" in historic literature has often been misconstrued as notions of ethnic/biological distinctions. The terms may have reflected ambiguous references to non-sedentary polities instead, as seems to be the case for the eastern "Bushman" heritage of the Baphuthi.
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Affiliation(s)
- Ryan Joseph Daniels
- Department of Zoology, University of Oxford, Oxford, OX1 3SZ Oxfordshire, UK; Forensic DNA Laboratory, Department of Biotechnology, University of the Western Cape, Cape Town 7535, South Africa.
| | - Maria Eugenia D'Amato
- Forensic DNA Laboratory, Department of Biotechnology, University of the Western Cape, Cape Town 7535, South Africa
| | - Mpasi Lesaoana
- Forensic DNA Laboratory, Department of Biotechnology, University of the Western Cape, Cape Town 7535, South Africa; Lesotho Mounted Police Service, Technical Support Services, Maseru 100, Lesotho
| | - Mohaimin Kasu
- Forensic DNA Laboratory, Department of Biotechnology, University of the Western Cape, Cape Town 7535, South Africa
| | - Karen Ehlers
- Department of Genetics, University of the Free State, Bloemfontein 9300, South Africa
| | - Paballo Abel Chauke
- Computational Biology Division, Department of Integrative Biomedical Sciences, Institute of Infectious Disease and Molecular Medicine, CIDRI Africa Wellcome Trust Centre, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Puseletso Lecheko
- Rock Art Research Institute, School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Sam Challis
- Rock Art Research Institute, School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Kirk Rockett
- Wellcome Centre for Human Genomics, Oxford, OX3 7BN Oxfordshire, UK
| | - Francesco Montinaro
- Department of Zoology, University of Oxford, Oxford, OX1 3SZ Oxfordshire, UK; Department of Biology-Genetics, University of Bari, Via E. Orabona, 4, 70124 Bari, Italy
| | | | - Cristian Capelli
- Department of Zoology, University of Oxford, Oxford, OX1 3SZ Oxfordshire, UK; Dipartimento delle Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, 43121 Parma, Italy.
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2
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Magnier J, Druet T, Naves M, Ouvrard M, Raoul S, Janelle J, Moazami-Goudarzi K, Lesnoff M, Tillard E, Gautier M, Flori L. The genetic history of Mayotte and Madagascar cattle breeds mirrors the complex pattern of human exchanges in Western Indian Ocean. G3 GENES|GENOMES|GENETICS 2022; 12:6523972. [PMID: 35137043 PMCID: PMC8982424 DOI: 10.1093/g3journal/jkac029] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/11/2022] [Indexed: 11/16/2022]
Abstract
Despite their central economic and cultural role, the origin of cattle populations living in Indian Ocean islands still remains poorly documented. Here, we unravel the demographic and adaptive histories of the extant Zebus from the Mayotte and Madagascar islands using high-density SNP genotyping data. We found that these populations are very closely related and both display a predominant indicine ancestry. They diverged in the 16th century at the arrival of European people who transformed the trade network in the area. Their common ancestral cattle population originates from an admixture between an admixed African zebu population and an Indian zebu that occurred around the 12th century at the time of the earliest contacts between human African populations of the Swahili corridor and Austronesian people from Southeast Asia in Comoros and Madagascar. A steep increase in the estimated population sizes from the beginning of the 16th to the 17th century coincides with the expansion of the cattle trade. By carrying out genome scans for recent selection in the two cattle populations from Mayotte and Madagascar, we identified sets of candidate genes involved in biological functions (cancer, skin structure, and UV-protection, nervous system and behavior, organ development, metabolism, and immune response) broadly representative of the physiological adaptation to tropical conditions. Overall, the origin of the cattle populations from Western Indian Ocean islands mirrors the complex history of human migrations and trade in this area.
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Affiliation(s)
- Jessica Magnier
- SELMET, University of Montpellier, CIRAD, INRAE, L’Institut Agro, Montpellier 34398, France
- CIRAD, UMR SELMET, Montpellier 34398, France
| | - Tom Druet
- Unit of Animal Genomics, GIGA-R, Faculty of Veterinary Medicine, University of Liège, Liège 4000, Belgium
| | | | | | | | - Jérôme Janelle
- SELMET, University of Montpellier, CIRAD, INRAE, L’Institut Agro, Montpellier 34398, France
- CIRAD, UMR SELMET, Saint-Pierre 97410, France
| | | | - Matthieu Lesnoff
- SELMET, University of Montpellier, CIRAD, INRAE, L’Institut Agro, Montpellier 34398, France
- CIRAD, UMR SELMET, Montpellier 34398, France
| | - Emmanuel Tillard
- SELMET, University of Montpellier, CIRAD, INRAE, L’Institut Agro, Montpellier 34398, France
- CIRAD, UMR SELMET, Saint-Pierre 97410, France
| | - Mathieu Gautier
- CBGP, INRAE, CIRAD, IRD, L’Institut Agro, University of Montpellier, Montferrier sur Lez 34988, France
| | - Laurence Flori
- SELMET, INRAE, CIRAD, L’Institut Agro, University of Montpellier, Montpellier 34398, France
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3
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Versluys TMM, Flintham EO, Mas-Sandoval A, Savolainen V. Why do we pick similar mates, or do we? Biol Lett 2021; 17:20210463. [PMID: 34813721 DOI: 10.1098/rsbl.2021.0463] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Humans often mate with those resembling themselves, a phenomenon described as positive assortative mating (PAM). The causes of this attract broad interest, but there is little agreement on the topic. This may be because empirical studies and reviews sometimes focus on just a few explanations, often based on disciplinary conventions. This review presents an interdisciplinary conceptual framework on the causes of PAM in humans, drawing on human and non-human biology, the social sciences, and the humanities. Viewing causality holistically, we first discuss the proximate causes (i.e. the 'how') of PAM, considering three mechanisms: stratification, convergence and mate choice. We also outline methods to control for confounders when studying mate choice. We then discuss ultimate explanations (i.e. 'the why') for PAM, including adaptive and non-adaptive processes. We conclude by suggesting a focus on interdisciplinarity in future research.
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Affiliation(s)
- Thomas M M Versluys
- Georgina Mace Centre for the Living Planet, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire SL5 7PY, United Kingdom
| | - Ewan O Flintham
- Georgina Mace Centre for the Living Planet, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire SL5 7PY, United Kingdom
| | - Alex Mas-Sandoval
- Georgina Mace Centre for the Living Planet, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire SL5 7PY, United Kingdom
| | - Vincent Savolainen
- Georgina Mace Centre for the Living Planet, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire SL5 7PY, United Kingdom
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4
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Yang XY, Rakha A, Chen W, Hou J, Qi XB, Shen QK, Dai SS, Sulaiman X, Abdulloevich NT, Afanasevna ME, Ibrohimovich KB, Chen X, Yang WK, Adnan A, Zhao RH, Yao YG, Su B, Peng MS, Zhang YP. Tracing the Genetic Legacy of the Tibetan Empire in the Balti. Mol Biol Evol 2021; 38:1529-1536. [PMID: 33283852 PMCID: PMC8042757 DOI: 10.1093/molbev/msaa313] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The rise and expansion of Tibetan Empire in the 7th to 9th centuries AD affected the course of history across East Eurasia, but the genetic impact of Tibetans on surrounding populations remains undefined. We sequenced 60 genomes for four populations from Pakistan and Tajikistan to explore their demographic history. We showed that the genomes of Balti people from Baltistan comprised 22.6–26% Tibetan ancestry. We inferred a single admixture event and dated it to about 39–21 generations ago, a period that postdated the conquest of Baltistan by the ancient Tibetan Empire. The analyses of mitochondrial DNA, Y, and X chromosome data indicated that both ancient Tibetan males and females were involved in the male-biased dispersal. Given the fact that the Balti people adopted Tibetan language and culture in history, our study suggested the impact of Tibetan Empire on Baltistan involved dominant cultural and minor demic diffusion.
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Affiliation(s)
- Xing-Yan Yang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, School of Life Sciences, Yunnan University, Kunming, China
| | - Allah Rakha
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan.,Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Wei Chen
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, China
| | - Juzhi Hou
- Key Laboratory of Alpine Ecology (LAE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
| | - Xue-Bin Qi
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Quan-Kuan Shen
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China
| | - Shan-Shan Dai
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China
| | - Xierzhatijiang Sulaiman
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | | | - Manilova Elena Afanasevna
- E.N. Pavlovsky Institute of Zoology and Parasitology, Academy of Sciences of Republic of Tajikistan, Dushanbe, Tajikistan
| | | | - Xi Chen
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China.,Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Wei-Kang Yang
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China.,Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Atif Adnan
- Department of Human Anatomy, School of Basic Medicine, China Medical University, Shenyang, China
| | - Ruo-Han Zhao
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China.,KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Bing Su
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China
| | - Min-Sheng Peng
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China.,KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Ya-Ping Zhang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, School of Life Sciences, Yunnan University, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China.,KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China
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5
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Abstract
A key link to understand human history in Island Southeast Asia is the Philippine archipelago and its poorly investigated genetic diversity. We analyzed the most comprehensive set of population-genomic data for the Philippines: 1,028 individuals covering 115 indigenous communities. We demonstrate that the Philippines were populated by at least five waves of human migration. The Cordillerans migrated into the Philippines prior to the arrival of rice agriculture, where some remain as the least admixed East Asians carrying an ancestry shared by all Austronesian-speaking populations, thereby challenging an exclusive out-of-Taiwan model of joint farming–language–people dispersal. Altogether, our findings portray the Philippines as a crucial gateway, with a multilayered history, that ultimately changed the genetic landscape of the Asia-Pacific region. Island Southeast Asia has recently produced several surprises regarding human history, but the region’s complex demography remains poorly understood. Here, we report ∼2.3 million genotypes from 1,028 individuals representing 115 indigenous Philippine populations and genome-sequence data from two ∼8,000-y-old individuals from Liangdao in the Taiwan Strait. We show that the Philippine islands were populated by at least five waves of human migration: initially by Northern and Southern Negritos (distantly related to Australian and Papuan groups), followed by Manobo, Sama, Papuan, and Cordilleran-related populations. The ancestors of Cordillerans diverged from indigenous peoples of Taiwan at least ∼8,000 y ago, prior to the arrival of paddy field rice agriculture in the Philippines ∼2,500 y ago, where some of their descendants remain to be the least admixed East Asian groups carrying an ancestry shared by all Austronesian-speaking populations. These observations contradict an exclusive “out-of-Taiwan” model of farming–language–people dispersal within the last four millennia for the Philippines and Island Southeast Asia. Sama-related ethnic groups of southwestern Philippines additionally experienced some minimal South Asian gene flow starting ∼1,000 y ago. Lastly, only a few lowlanders, accounting for <1% of all individuals, presented a low level of West Eurasian admixture, indicating a limited genetic legacy of Spanish colonization in the Philippines. Altogether, our findings reveal a multilayered history of the Philippines, which served as a crucial gateway for the movement of people that ultimately changed the genetic landscape of the Asia-Pacific region.
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6
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Brucato N, Fernandes V, Kusuma P, Černý V, Mulligan CJ, Soares P, Rito T, Besse C, Boland A, Deleuze JF, Cox MP, Sudoyo H, Stoneking M, Pereira L, Ricaut FX. Evidence of Austronesian Genetic Lineages in East Africa and South Arabia: Complex Dispersal from Madagascar and Southeast Asia. Genome Biol Evol 2019; 11:748-758. [PMID: 30715341 PMCID: PMC6423374 DOI: 10.1093/gbe/evz028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2019] [Indexed: 12/31/2022] Open
Abstract
The Austronesian dispersal across the Indonesian Ocean to Madagascar and the Comoros has been well documented, but in an unexplained anomaly, few to no traces have been found of the Austronesian expansion in East Africa or the Arabian Peninsula. To revisit this peculiarity, we surveyed the Western Indian Ocean rim populations to identify potential Austronesian genetic ancestry. We generated full mitochondrial DNA genomes and genome-wide genotyping data for these individuals and compared them with the Banjar, the Indonesian source population of the westward Austronesian dispersal. We find strong support for Asian genetic contributions to maternal lineages and autosomal variation in modern day Somalia and Yemen. Surprisingly, this input reveals two apparently different geographic origins and timings of admixture for the Austronesian contact; one at a very early phase (likely associated with the early Austronesian dispersals), and a later movement dating to the end of nineteenth century. These Austronesian gene flows come, respectively, from Madagascar and directly from an unidentified location in Island Southeast Asia. This result reveals a far more complex dynamic of Austronesian dispersals through the Western Indian Ocean than has previously been understood and suggests that Austronesian movements within the Indian Ocean may have been part of a lengthy process, probably continuing well into the modern era.
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Affiliation(s)
- Nicolas Brucato
- Laboratoire Évolution & Diversité Biologique (EDB UMR 5174), Université de Toulouse Midi-Pyrénées, CNRS, IRD, UPS, Toulouse, France
| | - Veronica Fernandes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Instituto de Patologia e Imunologia Molecular da Universidade do Porto (Ipatimup), Porto, Portugal
| | - Pradiptajati Kusuma
- Genome Diversity and Diseases Laboratory, Eijkman Institute for Molecular Biology, Jakarta, Indonesia
| | - Viktor Černý
- Department of Anthropology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | | | - Pedro Soares
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (Ipatimup), Porto, Portugal.,Centro de Biologia Molecular e Ambiental (CBMA), Departamento de Biologia, Universidade do Minho, Braga, Portugal
| | - Teresa Rito
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (Ipatimup), Porto, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine & ICVS/3B, PT Government Associate Laboratory, University of Minho, Braga, Portugal
| | - Céline Besse
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Anne Boland
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Jean-Francois Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Murray P Cox
- Statistics and Bioinformatics Group, School of Fundamental Sciences, Massey University, Palmerston North, New Zealand
| | - Herawati Sudoyo
- Genome Diversity and Diseases Laboratory, Eijkman Institute for Molecular Biology, Jakarta, Indonesia.,Department of Medical Biology, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Mark Stoneking
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Luisa Pereira
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Instituto de Patologia e Imunologia Molecular da Universidade do Porto (Ipatimup), Porto, Portugal
| | - François-Xavier Ricaut
- Laboratoire Évolution & Diversité Biologique (EDB UMR 5174), Université de Toulouse Midi-Pyrénées, CNRS, IRD, UPS, Toulouse, France
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7
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Chimusa ER, Defo J, Thami PK, Awany D, Mulisa DD, Allali I, Ghazal H, Moussa A, Mazandu GK. Dating admixture events is unsolved problem in multi-way admixed populations. Brief Bioinform 2018; 21:144-155. [PMID: 30462157 DOI: 10.1093/bib/bby112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/12/2018] [Accepted: 10/15/2018] [Indexed: 12/12/2022] Open
Abstract
Advances in human sequencing technologies, coupled with statistical and computational tools, have fostered the development of methods for dating admixture events. These methods have merits and drawbacks in estimating admixture events in multi-way admixed populations. Here, we first provide a comprehensive review and comparison of current methods pertinent to dating admixture events. Second, we assess various admixture dating tools. We do so by performing various simulations. Third, we apply the top two assessed methods to real data of a uniquely admixed population from South Africa. Results reveal that current dating admixture models are not sufficiently equipped to estimate ancient admixtures events and to identify multi-faceted admixture events in complex multi-way admixed populations. We conclude with a discussion of research areas where further work on dating admixture-based methods is needed.
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Affiliation(s)
- Emile R Chimusa
- Division of Human Genetics, Department of Pathology, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa
| | - Joel Defo
- Division of Human Genetics, Department of Pathology, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa
| | - Prisca K Thami
- Division of Human Genetics, Department of Pathology, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa.,Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana.,Department of Biological Sciences, University of Botswana, Gaborone, Botswana
| | - Denis Awany
- Division of Human Genetics, Department of Pathology, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa
| | - Delesa D Mulisa
- Division of Human Genetics, Department of Pathology, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa
| | - Imane Allali
- Division of Computational Biology, Department of Biomedical Sciences, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa
| | | | - Ahmed Moussa
- Abdelmalek Essaadi University ENSA, Tangier, Morocco
| | - Gaston K Mazandu
- Division of Human Genetics, Department of Pathology, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa.,Division of Computational Biology, Department of Biomedical Sciences, Institute of Infectious Disease and Molecular Medicine,Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa.,African Institute for Mathematical Sciences (AIMS),Muizenberg, Cape Town, South Africa
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8
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New evidence of megafaunal bone damage indicates late colonization of Madagascar. PLoS One 2018; 13:e0204368. [PMID: 30303989 PMCID: PMC6179221 DOI: 10.1371/journal.pone.0204368] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 09/05/2018] [Indexed: 02/04/2023] Open
Abstract
The estimated period in which human colonization of Madagascar began has expanded recently to 5000-1000 y B.P., six times its range in 1990, prompting revised thinking about early migration sources, routes, maritime capability and environmental changes. Cited evidence of colonization age includes anthropogenic palaeoecological data 2500-2000 y B.P., megafaunal butchery marks 4200-1900 y B.P. and OSL dating to 4400 y B.P. of the Lakaton'i Anja occupation site. Using large samples of newly-excavated bone from sites in which megafaunal butchery was earlier dated >2000 y B.P. we find no butchery marks until ~1200 y B.P., with associated sedimentary and palynological data of initial human impact about the same time. Close analysis of the Lakaton'i Anja chronology suggests the site dates <1500 y B.P. Diverse evidence from bone damage, palaeoecology, genomic and linguistic history, archaeology, introduced biota and seafaring capability indicate initial human colonization of Madagascar 1350-1100 y B.P.
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9
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Mazières S, Oviedo P, Kamel C, Bailly P, Costedoat C, Chiaroni J. Genes flow by the channels of culture: the genetic imprint of matrilocality in Ngazidja, Comoros Islands. Eur J Hum Genet 2018; 26:1222-1226. [PMID: 29706642 PMCID: PMC6057983 DOI: 10.1038/s41431-018-0154-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 03/22/2018] [Accepted: 03/27/2018] [Indexed: 11/28/2022] Open
Abstract
Post-marital residence of spouses is one of the architects of population genetic structure. In the present study, we tested how the place of residence of males and females in Ngazidja, Comoros Islands, has unequally channeled, by dispersal among villages, the male and female genetic diversity. Using sequences of the hypervariable segment I of the mitochondrial DNA (mtDNA HVS-I) and six Y-chromosome microsatellites (Y-STRs), we measured the genetic variation and male-to-female effective number of migrants ratios based on FST values and revealed a genetic structure mostly driven by male gene flow across villages. This genetic feature illustrates the uxori-matrilocality inherited from the Bantu expansion, though one exception exists in Bandamadji whose historically documented military status implied patrilocality in this locality.
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Affiliation(s)
| | | | - Célia Kamel
- Aix Marseille Univ, CNRS, EFS, ADES, Marseille, France
| | - Pascal Bailly
- Aix Marseille Univ, CNRS, EFS, ADES, Marseille, France
- Etablissement Français du Sang PACA Corse, Biologie des groupes sanguins, Marseille, France
| | | | - Jacques Chiaroni
- Aix Marseille Univ, CNRS, EFS, ADES, Marseille, France
- Etablissement Français du Sang PACA Corse, Biologie des groupes sanguins, Marseille, France
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10
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Choudhury A, Aron S, Sengupta D, Hazelhurst S, Ramsay M. African genetic diversity provides novel insights into evolutionary history and local adaptations. Hum Mol Genet 2018; 27:R209-R218. [PMID: 29741686 PMCID: PMC6061870 DOI: 10.1093/hmg/ddy161] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 04/27/2018] [Accepted: 04/27/2018] [Indexed: 12/22/2022] Open
Abstract
Genetic variation and susceptibility to disease are shaped by human demographic history and adaptation. We can now study the genomes of extant Africans and uncover traces of population migration, admixture, assimilation and selection by applying sophisticated computational algorithms. There are four major ethnolinguistic divisions among present day Africans: Hunter-gatherer populations in southern and central Africa; Nilo-Saharan speakers from north and northeast Africa; Afro-Asiatic speakers from north and east Africa; and Niger-Congo speakers who are the predominant ethnolinguistic group spread across most of sub-Saharan Africa. The enormous ethnolinguistic diversity in sub-Saharan African populations is largely paralleled by extensive genetic diversity and until a decade ago, little was known about detailed origins and divergence of these groups. Results from large-scale population genetic studies, and more recently whole genome sequence data, are unravelling the critical role of events like migration and admixture and environmental factors including diet, infectious diseases and climatic conditions in shaping current population diversity. It is now possible to start providing quantitative estimates of divergence times, population size and dynamic processes that have affected populations and their genetic risk for disease. Finally, the availability of ancient genomes from Africa provides historical insights of unprecedented depth. In this review, we highlight some key interpretations that have emerged from recent African genome studies.
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Affiliation(s)
- Ananyo Choudhury
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Shaun Aron
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Dhriti Sengupta
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Scott Hazelhurst
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- School of Electrical & Information Engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - Michèle Ramsay
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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11
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Brucato N, Fernandes V, Mazières S, Kusuma P, Cox MP, Ng'ang'a JW, Omar M, Simeone-Senelle MC, Frassati C, Alshamali F, Fin B, Boland A, Deleuze JF, Stoneking M, Adelaar A, Crowther A, Boivin N, Pereira L, Bailly P, Chiaroni J, Ricaut FX. The Comoros Show the Earliest Austronesian Gene Flow into the Swahili Corridor. Am J Hum Genet 2018; 102:58-68. [PMID: 29304377 DOI: 10.1016/j.ajhg.2017.11.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/16/2017] [Indexed: 12/12/2022] Open
Abstract
At the dawn of the second millennium, the expansion of the Indian Ocean trading network aligned with the emergence of an outward-oriented community along the East African coast to create a cosmopolitan cultural and trading zone known as the Swahili Corridor. On the basis of analyses of new genome-wide genotyping data and uniparental data in 276 individuals from coastal Kenya and the Comoros islands, along with large-scale genetic datasets from the Indian Ocean rim, we reconstruct historical population dynamics to show that the Swahili Corridor is largely an eastern Bantu genetic continuum. Limited gene flows from the Middle East can be seen in Swahili and Comorian populations at dates corresponding to historically documented contacts. However, the main admixture event in southern insular populations, particularly Comorian and Malagasy groups, occurred with individuals from Island Southeast Asia as early as the 8th century, reflecting an earlier dispersal from this region. Remarkably, our results support recent archaeological and linguistic evidence-based suggestions that the Comoros archipelago was the earliest location of contact between Austronesian and African populations in the Swahili Corridor.
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Affiliation(s)
- Nicolas Brucato
- Evolutionary Medicine Group, Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse UMR 5288 CNRS, Université Toulouse III, Université de Toulouse, Toulouse 31073, France.
| | - Veronica Fernandes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto 4200-135, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto 4200-465, Portugal
| | - Stéphane Mazières
- Groupe Biologie des Groupes Sanguins, Aix Marseille Université, CNRS, Etablissement Francais du Sang, Anthropologie Bio-culturelle, Droit, Éthique et Santé, Marseille 13385, France
| | - Pradiptajati Kusuma
- Evolutionary Medicine Group, Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse UMR 5288 CNRS, Université Toulouse III, Université de Toulouse, Toulouse 31073, France; Genome Diversity and Diseases Laboratory, Eijkman Institute for Molecular Biology, Jakarta 10430, Indonesia
| | - Murray P Cox
- Statistics and Bioinformatics Group, Institute of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand; Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig 04103, Germany
| | | | | | - Marie-Claude Simeone-Senelle
- Langage, Langues et Cultures d'Afrique Noire, UMR 8135, CNRS, Institut National des Langues et Cultures Orientales, Université Sorbonne Paris Cité, BP 8, 94801 Villejuif-Cedex, France
| | - Coralie Frassati
- Groupe Biologie des Groupes Sanguins, Aix Marseille Université, CNRS, Etablissement Francais du Sang, Anthropologie Bio-culturelle, Droit, Éthique et Santé, Marseille 13385, France; Établissement Français du Sang Alpes Méditerranée, Marseille 13272, France
| | - Farida Alshamali
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, PO Box 1493, Dubai, United Arab Emirates
| | - Bertrand Fin
- Centre National de Recherche en Génomique Humaine, Institut de Biologie François Jacob, Commissariat à L'Énergie Atomique et aux Énergies Alternatives, Evry 91000, France
| | - Anne Boland
- Centre National de Recherche en Génomique Humaine, Institut de Biologie François Jacob, Commissariat à L'Énergie Atomique et aux Énergies Alternatives, Evry 91000, France
| | - Jean-Francois Deleuze
- Centre National de Recherche en Génomique Humaine, Institut de Biologie François Jacob, Commissariat à L'Énergie Atomique et aux Énergies Alternatives, Evry 91000, France
| | | | - Alexander Adelaar
- Asia Institute, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Alison Crowther
- School of Social Science, University of Queensland, Brisbane 4072, Australia; Max Planck Institute for the Science of Human History, Jena 07745, Germany
| | - Nicole Boivin
- Max Planck Institute for the Science of Human History, Jena 07745, Germany
| | - Luisa Pereira
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto 4200-135, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto 4200-465, Portugal
| | - Pascal Bailly
- Groupe Biologie des Groupes Sanguins, Aix Marseille Université, CNRS, Etablissement Francais du Sang, Anthropologie Bio-culturelle, Droit, Éthique et Santé, Marseille 13385, France; Établissement Français du Sang Alpes Méditerranée, Marseille 13272, France
| | - Jacques Chiaroni
- Groupe Biologie des Groupes Sanguins, Aix Marseille Université, CNRS, Etablissement Francais du Sang, Anthropologie Bio-culturelle, Droit, Éthique et Santé, Marseille 13385, France; Établissement Français du Sang Alpes Méditerranée, Marseille 13272, France
| | - François-Xavier Ricaut
- Evolutionary Medicine Group, Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse UMR 5288 CNRS, Université Toulouse III, Université de Toulouse, Toulouse 31073, France.
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