Global InformationSouthern Dispersal information
In the context of the recent African origin of modern humans, the Southern Dispersal scenario (also the coastal migration or great coastal migration) refers to the early migration along the southern coast of Asia, from the Arabian Peninsula via Persia and India to Southeast Asia and Oceania.[1] Alternative names include the "southern coastal route"[2] or "rapid coastal settlement",[3][4] with later descendants of those migrations eventually colonizing the rest of Eastern Eurasia, the remainder of Oceania, and the Americas.
According to this thesis, the dispersal was possible thanks to the development of a multipurpose subsistence strategy, based on the collection of organisms, fish, crustaceans, molluscs, algae, which are part of the biotic communities of the intertidal zone, the transition ecosystem between land and sea between the upper limit of high tides and the lower limit of low tides. - In support of this hypothesis there are the remains found on an ancient Pleistocene reef, now emerged, near the locality of Abdur in Eritrea. Its rocks are the result of the compaction of marine debris about 125,000 years ago and contain fossil remains of a complex biotic community of the coast of the time: large colonies of corals, oyster shells, large clams and other bivalve molluscs, gastropods and echinoderms. A group of geologists and paleontologists found many blades and tools made of obsidian, quartz and fine volcanic stone, mixed with the remains of shells. This would prove that over 100,000 years ago human populations of Homo sapiens exploited the intertidal zone for food purposes.
The coastal route theory is primarily used to describe the initial peopling of West Asia, India, Southeast Asia, New Guinea, Australia, Near Oceania, and East Asia beginning between roughly 70,000 and 50,000 years ago.[4][5][6][7][8][9]
It is linked with the presence and dispersal of mtDNA haplogroup M and haplogroup N, as well as the specific distribution patterns of Y-DNA haplogroup F (ancestral to O, N, R, Q),[10] haplogroup C and haplogroup D, in these regions.[3][11][12]
The theory proposes that early modern humans, some of the bearers of mitochondrial haplogroup L3, arrived in the Arabian peninsula about 70,000-50,000 years ago, crossing from East Africa via the Bab-el-Mandeb strait.[4] It has been estimated that from a population of 2,000 to 5,000 individuals in Africa, only a small group, possibly as few as 150 to 1,000 people, crossed the Red Sea.[13] The group would have travelled along the coastal route around Arabia and Persia to India relatively rapidly, within a few thousand years. From India, they would have spread to Southeast Asia ("Sundaland") and Oceania ("Sahul").[6][7][9][4]
- ^ Phillip Endicott; Mait Metspalu; Toomas Kivisild (2007), The Evolution and History of Human Populations in South Asia: Inter-disciplinary Studies in Archaeology, Biological Anthropology, Linguistics and Genetics, Springer Netherlands, doi:10.1007/1-4020-5562-5_10, ISBN 978-1-4020-5561-4,
... The concept of a coastal migration was already envisioned in 1962 by the ...
- ^ Metspalu et al 2006, Human Mitochondrial DNA and the Evolution of Homo sapiens.
- ^ a b Vincent Macaulay; et al. (13 May 2005), "Single, Rapid Coastal Settlement of Asia Revealed by Analysis of Complete Mitochondrial Genomes; Vol. 308. no. 5724" (PDF), Science Magazine, vol. 308, no. 5724, pp. 1034–36, Bibcode:2005Sci...308.1034M, doi:10.1126/science.1109792, PMID 15890885, S2CID 31243109,
... mitochondrial DNA variation in isolated "relict" populations in southeast Asia supports the view that there was only a single dispersal from Africa, most likely via a southern coastal route, through India and onward into southeast Asia and Australasia. There was an early offshoot, leading ultimately to the settlement of the Near East and Europe, but the main dispersal from India to Australia 65,000 years ago was rapid, most likely taking only a few thousand years. ...
- ^ a b c d Núñez Castillo, Mélida Inés (20 December 2021). Ancient genetic landscape of archaeological human remains from Panama, South America and Oceania described through STR genotype frequencies and mitochondrial DNA sequences. Dissertation (doctoralThesis). doi:10.53846/goediss-9012. S2CID 247052631.
- ^ Kevin O. Pope; John E. Terrell (9 October 2007), "Environmental setting of human migrations in the circum-Pacific region", Journal of Biogeography, vol. 35, no. 1, pp. 071009214220006––, doi:10.1111/j.1365-2699.2007.01797.x, S2CID 56370273,
... The expansion of modern humans out of Africa, following a coastal route into southern Asia, was initially thwarted by a series of large and abrupt environmental changes. A period of relatively stable climate and sea level from c. 45,000 yr bp to 40,000 yr bp supported a rapid coastal expansion of modern humans throughout much of Southeast Asia, enabling them to reach the coasts of northeast Russia and Japan by 38,000–37,000 yr bp ...
- ^ a b Spencer Wells (2002), The Journey of Man: A Genetic Odyssey, Princeton University Press, ISBN 978-0691115320,
... the population of south-east Asia prior to 6000 years ago was composed largely of groups of hunter-gatherers very similar to modern Negritos ... So, both the Y-chromosome and the mtDNA paint a clear picture of a coastal leap from Africa to south-east Asia, and onward to Australia ... DNA has given us a glimpse of the voyage, which almost certainly followed a coastal route via India ...
- ^ a b Posth C, Renaud G, Mittnik M, Drucker DG, Rougier H, Cupillard C, Valentin F, Thevenet C, Furtwängler A, Wißing C, Francken M, Malina M, Bolus M, Lari M, Gigli E, Capecchi G, Crevecoeur I, Beauval C, Flas D, Germonpré M, van der Plicht J, Cottiaux R, Gély B, Ronchitelli A, Wehrberger K, Grigorescu D, Svoboda J, Semal P, Caramelli D, Bocherens H, Harvati K, Conard NJ, Haak W, Powell A, Krause J (2016). "Pleistocene Mitochondrial Genomes Suggest a Single Major Dispersal of Non-Africans and a Late Glacial Population Turnover in Europe". Current Biology. 26 (6): 827–833. Bibcode:2016CBio...26..827P. doi:10.1016/j.cub.2016.01.037. hdl:2440/114930. PMID 26853362. S2CID 140098861.
- ^ Kamin M, Saag L, Vincente M, et al. (April 2015). "A recent bottleneck of Y chromosome diversity coincides with a global change in culture". Genome Research. 25 (4): 459–466. doi:10.1101/gr.186684.114. PMC 4381518. PMID 25770088.
- ^ a b Haber M, Jones AL, Connel BA, Asan, Arciero E, Huanming Y, Thomas MG, Xue Y, Tyler-Smith C (June 2019). "A Rare Deep-Rooting D0 African Y-chromosomal Haplogroup and its Implications for the Expansion of Modern Humans Out of Africa". Genetics. 212 (4): 1421–1428. doi:10.1534/genetics.119.302368. PMC 6707464. PMID 31196864.
- ^ Culotta, Elizabeth; Gibbons, Ann (21 September 2016). "Almost all living people outside of Africa trace back to a single migration more than 50,000 years ago". Science | AAAS. Retrieved 11 June 2020.
- ^ Searching for traces of the Southern Dispersal Archived 10 May 2012 at the Wayback Machine, by Dr Marta Mirazón Lahr, et al.
- ^ "The Genographic Project: Genetic Markers, Haplogroup D (M174)", National Geographic, 2008, archived from the original on 5 April 2008,
... Haplogroup D may have accompanied another group, the Coastal Clan (haplogroup C) on the first major wave of migration out of Africa around 50,000 years ago. Taking advantage of the plentiful seaside resources, these intrepid explorers followed the coastline of Africa through the southern Arabian Peninsula, India, Sri Lanka, and Southeast Asia. Alternatively, they may have made the trek at a later time, following in the footsteps of the Coastal Clan ...
- ^ Zhivotovsky; Rosenberg, NA; Feldman, MW; et al. (2003). "Features of Evolution and Expansion of Modern Humans, Inferred from Genomewide Microsatellite Markers". American Journal of Human Genetics. 72 (5): 1171–86. doi:10.1086/375120. PMC 1180270. PMID 12690579.Stix, Gary (2008). "The Migration History of Humans: DNA Study Traces Human Origins Across the Continents". Scientific American. Retrieved 14 June 2011.