This article reports on the first genetic assessment of the contemporary Mauritian population. Small island nodes such as Mauritius played a critical role in historic globalization processes and revealing high-resolution details of labour sourcing is crucial in order to better understand early-modern diaspora events. Mauritius is a particularly interesting case given detailed historic accounts attesting to European (Dutch, French and British), African and Asian points of origin. Ninety-seven samples were analysed for mitochondrial DNA to begin unravelling the complex dynamics of the island's modern population. In corroboration with general demographic information, the majority of maternal lineages were derived from South Asia (58.76%), with Malagasy (16.60%), East/Southeast Asian (11.34%) and Sub-Saharan African (10.21%) also making significant contributions. This study pinpoints specific regional origins for the South Asian genetic contribution, showing a greater influence on the contemporary population from northern and southeast India. Moreover, the analysis of lineages related to the slave trade demonstrated that Madagascar and East Asia were the main centres of origin, with less influence from West Africa.
References
[1]
Fuller DQ, Boivin N, Hoogervorst T, Allaby R (2011) Across the Indian Ocean: the prehistoric movement of plants and animals. Antiquity 85: 544–558.
[2]
Allen RB (1999) Slaves, freedmen and indentured laborers in colonial Mauritius. Cambridge: Cambridge University Press.
[3]
Soodyall H, Jenkins T, Stoneking M (1995) ‘Polynesian’ mtDNA in the Malagasy. Nat Genet 10: 377–378. doi: 10.1038/ng0895-377
[4]
Dubut V, Cartault F, Payet C, Thionville MD, Murail P (2009) Complete mitochondrial sequences for haplogroups M23 and M46: insights into the Asian ancestry of the Malagasy population. Hum Biol 81: 495–500. doi: 10.3378/027.081.0407
[5]
Hurles ME, Sykes BC, Jobling MA, Forster P (2005) The dual origin of the Malagasy in Island Southeast Asia and East Africa: evidence from maternal and paternal lineages. Am J Hum Genet 76: 894–901. doi: 10.1086/430051
[6]
Razafindrazaka H, Ricaut FX, Cox MP, Mormina M, Dugoujon JM, et al. (2010) Complete mitochondrial DNA sequences provide new insights into the Polynesian motif and the peopling of Madagascar. Eur J Hum Genet 18: 575–581. doi: 10.1038/ejhg.2009.222
[7]
Tofanelli S, Bertoncini S, Castri L, Luiselli D, Calafell F, et al. (2009) On the origins and admixture of Malagasy: new evidence from high-resolution analyses of paternal and maternal lineages. Mol Biol Evol 26: 2109–2124. doi: 10.1093/molbev/msp120
[8]
Gourjon G, Boetsch G, Degioanni A (2011) Gender and population history: sex bias revealed by studying genetic admixture of Ngazidja population (Comoro Archipelago). Am J Phys Anthropol 144: 653–660. doi: 10.1002/ajpa.21474
[9]
Msaidie S, Ducourneau A, Boetsch G, Longepied G, Papa K, et al. (2011) Genetic diversity on the Comoros Islands shows early seafaring as major determinant of human biocultural evolution in the Western Indian Ocean. Eur J Hum Genet 19: 89–94. doi: 10.1038/ejhg.2010.128
[10]
Berniell-Lee G, Plaza S, Bosch E, Calafell F, Jourdan E, et al. (2008) Admixture and sexual bias in the population settlement of La Reunion Island (Indian Ocean). Am J Phys Anthropol 136: 100–107. doi: 10.1002/ajpa.20783
[11]
Dubut V, Murail P, Pech N, Thionville MD, Cartault F (2009) Inter- and extra-Indian admixture and genetic diversity in reunion island revealed by analysis of mitochondrial DNA. Ann Hum Genet 73: 314–334. doi: 10.1111/j.1469-1809.2009.00519.x
[12]
Filliot JM (1974) La traite des esclaves vers la Mascareignes au XVIIIe siecle. Paris: ORSTOM.
[13]
Maca-Meyer N, Gonzalez AM, Larruga JM, Flores C, Cabrera VM (2001) Major genomic mitochondrial lineages delineate early human expansions. BMC Genet 2: 13. doi: 10.1186/1471-2156-2-13
[14]
van Oven M, Kayser M (2009) Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation. Hum Mutat 30: E386–394. doi: 10.1002/humu.20921
[15]
Slatkin M (1995) A measure of population subdivision based on microsatellite allele frequencies. Genetics 139: 457–462.
[16]
Nei N (1987) Molecular evolutionary genetics. New York: Columbia University Press.
[17]
Schneider S, Roessli D, Excoffier L (2000) Arlequin ver. 2000: A software for population genetics data analysis. Geneva, Switzerland: Genetics and Biometry Laboratory, University of Geneva.
[18]
Mendizabal I, Sandoval K, Berniell-Lee G, Calafell F, Salas A, et al. (2008) Genetic origin, admixture, and asymmetry in maternal and paternal human lineages in Cuba. BMC Evol Biol 8: 213. doi: 10.1186/1471-2148-8-213
[19]
Dupanloup I, Bertorelle G (2001) Inferring admixture proportions from molecular data: extension to any number of parental populations. Mol Biol Evol 18: 672–675. doi: 10.1093/oxfordjournals.molbev.a003847
[20]
Long JC (1991) The genetic structure of admixed populations. Genetics 127: 417–428.
[21]
Bandelt HJ, Forster P, Rohl A (1999) Median-joining networks for inferring intraspecific phylogenies. Mol Biol Evol 16: 37–48. doi: 10.1093/oxfordjournals.molbev.a026036
Roostalu U, Kutuev I, Loogvali EL, Metspalu E, Tambets K, et al. (2007) Origin and expansion of haplogroup H, the dominant human mitochondrial DNA lineage in West Eurasia: the Near Eastern and Caucasian perspective. Mol Biol Evol 24: 436–448. doi: 10.1093/molbev/msl173
[24]
Behar DM, Metspalu E, Kivisild T, Rosset S, Tzur S, et al. (2008) Counting the founders: the matrilineal genetic ancestry of the Jewish Diaspora. PLoS ONE 3: e2062. doi: 10.1371/journal.pone.0002062
[25]
Ricaut FX, Razafindrazaka H, Cox MP, Dugoujon JM, Guitard E, et al. (2009) A new deep branch of eurasian mtDNA macrohaplogroup M reveals additional complexity regarding the settlement of Madagascar. BMC Genomics 10: 605. doi: 10.1186/1471-2164-10-605
[26]
Metspalu M, Kivisild T, Metspalu E, Parik J, Hudjashov G, et al. (2004) Most of the extant mtDNA boundaries in south and southwest Asia were likely shaped during the initial settlement of Eurasia by anatomically modern humans. BMC Genet 5: 26.
[27]
Chaubey G, Karmin M, Metspalu E, Metspalu M, Selvi-Rani D, et al. (2008) Phylogeography of mtDNA haplogroup R7 in the Indian peninsula. BMC Evol Biol 8: 227. doi: 10.1186/1471-2148-8-227
[28]
Carter M (1995) Servants, sirdars, and settlers: Indians in Mauritius, 1834–1874. New York: Oxford University Press.
[29]
Thangaraj K, Chaubey G, Kivisild T, Selvi Rani D, Singh VK, et al. (2008) Maternal footprints of Southeast Asians in North India. Hum Hered 66: 1–9. doi: 10.1159/000114160
[30]
Chandrasekar A, Kumar S, Sreenath J, Sarkar BN, Urade BP, et al. (2009) Updating phylogeny of mitochondrial DNA macrohaplogroup m in India: dispersal of modern human in South Asian corridor. PLoS ONE 4: e7447. doi: 10.1371/journal.pone.0007447
[31]
Dupon JF (1974) Les immigrants indiens de La Reunion: Evolution et assimilation d'une population. Cah Cent Univ La Réunion 4: 67–93.
[32]
Lacpatia F (1982) Les Indiens de La Réunion 1: Origine et recrutement. Saint-Denis (Réunion): Bibliothèque Départementale.
[33]
Singhvi LM, Bhatia RL, Hiremath JR, Baleshwar A, Agrawal B, et al.. (2001) Réunion. In: Division NRIPoIO, editor. Report of the high level committee on Indian diaspora. New-Delhi: Ministry of External Affairs. pp. 61–70.
[34]
Maca-Meyer N, Cabrera VM, Arnay M, Flores C, Fregel R, et al. (2005) Mitochondrial DNA diversity in 17th–18th century remains from Tenerife (Canary Islands). Am J Phys Anthropol 127: 418–426. doi: 10.1002/ajpa.20148
[35]
Maca-Meyer N, Arnay M, Rando JC, Flores C, Gonzalez AM, et al. (2004) Ancient mtDNA analysis and the origin of the Guanches. Eur J Hum Genet 12: 155–162. doi: 10.1038/sj.ejhg.5201075
[36]
Fregel R, Gomes V, Gusmao L, Gonzalez AM, Cabrera VM, et al. (2009) Demographic history of Canary Islands male gene-pool: replacement of native lineages by European. BMC Evol Biol 9: 181. doi: 10.1186/1471-2148-9-181