Native American gene flow into Polynesia predating Easter Island settlement

@article{Ioannidis2020NativeAG,
  title={Native American gene flow into Polynesia predating Easter Island settlement},
  author={A. Ioannidis and Javier Blanco-Portillo and Karla Sandoval and Erika Hagelberg and Juan Francisco Miquel-Poblete and Jos{\'e} V{\'i}ctor Moreno-Mayar and Juan Esteban Rodr{\'i}guez-Rodr{\'i}guez and Consuelo D. Quinto-Cort{\'e}s and Kathryn Auckland and Tom Parks and Kathryn J. H. Robson and Adrian V. S. Hill and Mar{\'i}a C. {\'A}vila-Arcos and Alexandra Sockell and Julian R Homburger and Genevieve L. Wojcik and Kathleen C. Barnes and Luisa Herrera and Soledad Berr{\'i}os and M{\'o}nica Acu{\~n}a and Elena Llop and Celeste Eng and Scott Huntsman and Esteban Gonz{\'a}lez Burchard and Christopher R. Gignoux and Luc{\'i}a Cifuentes and Ricardo A. Verdugo and Mauricio Moraga and Alexander J. Mentzer and Carlos D. Bustamante and Andr{\'e}s Moreno-Estrada},
  journal={Nature},
  year={2020},
  pages={1-6}
}
The possibility of voyaging contact between prehistoric Polynesian and Native American populations has long intrigued researchers. Proponents have pointed to the existence of New World crops, such as the sweet potato and bottle gourd, in the Polynesian archaeological record, but nowhere else outside the pre-Columbian Americas 1 – 6 , while critics have argued that these botanical dispersals need not have been human mediated 7 . The Norwegian explorer Thor Heyerdahl controversially suggested… Expand
Genomic insights into population history and biological adaptation in Oceania.
TLDR
The authors' analyses reveal marked differences in the proportion and nature of Denisovan heritage among Pacific groups, suggesting that independent interbreeding with highly structured archaic populations occurred and that introgression of Neanderthal genetic information facilitated the adaptation of modern humans related to multiple phenotypes. Expand
Ancient DNA Studies in Pre-Columbian Mesoamerica
TLDR
How aDNA research has helped discern population dynamics patterns in the pre-Columbian Mesoamerican context is reviewed, how it supports archaeological, linguistic, and anthropological conclusions, and how it offers new working hypotheses are reviewed. Expand
Peopling of the Americas as inferred from ancient genomics.
TLDR
All ancient individuals in the Americas, save for later-arriving Arctic peoples, are more closely related to contemporary Indigenous American individuals than to any other population elsewhere, which challenges the claim-which is based on anatomical evidence-that there was an early, non-Native American population in the Americans. Expand
The genomic landscape of Mexican Indigenous populations brings insights into the peopling of the Americas.
TLDR
A genome-wide analysis of 716 newly genotyped individuals from 60 of the 68 recognized ethnic groups in Mexico shows that the genetic structure of these populations is strongly influenced by geography, and demographic reconstructions suggest a decline in the population size of all tested populations in the last 15-30 generations. Expand
Population inter-connectivity over the past 120,000 years explains distribution and diversity of Central African hunter-gatherers
TLDR
The results reveal that CAHG stem from a deep history of partially connected populations that allowed the coexistence of relatively large effective population sizes and local differentiation, with important implications for the evolution of genetic and cultural diversity in Homo sapiens. Expand
Admixture with indigenous people helps local adaptation: admixture-enabled selection in Polynesians
TLDR
The results suggest that admixture with Papuan-related ancestors contributed to the rapid local adaptation of Polynesian ancestors, a common event in humans. Expand
Holocene land and sea-trade routes explain complex patterns of pre-Columbian crop dispersion.
TLDR
It is proposed that cherimoya represents a wider group of perennial fruit crops dispersed by humans via sea-trade routes between Mesoamerica and the Andes across the Pacific Ocean, providing new insights into pre-Columbian crop exchange in the Americas. Expand
Seawater resistance in sweet potato (Ipomoea batatas) seeds: a key factor for natural dispersal from the Americas to Oceania
TLDR
The results support the sea-drift natural dispersal hypothesis for sweet potato dispersal, shedding light on part of the logical conditions for one of the major hypotheses on the historical biogeography of this species, which also plays an important role in the discussions related to prehistorical human mobility in Polynesian islands. Expand
Native South Americans were early inhabitants of Polynesia
DNA analysis of Polynesians and Native South Americans has revealed an ancient genetic signature that resolves a long-running debate over Polynesian origins and early contacts between the twoExpand
Genome-wide diversity of coconut from northern South America uncovers genotypes present in Colombia and strong population structure
TLDR
The results suggest that the Pacific coconuts of Colombia belong to the pre-Columbian population found on the Pacific coast of Panama and Peru, which has a lower genetic diversity and a higher rate of inbreeding than the Atlantic group. Expand
...
1
2
...

References

SHOWING 1-10 OF 98 REFERENCES
The Polynesian gene pool: an early contribution by Amerindians to Easter Island
  • E. Thorsby
  • Biology, Medicine
  • Philosophical Transactions of the Royal Society B: Biological Sciences
  • 2012
TLDR
An early Amerindian contribution to the Polynesian gene pool on Easter Island is demonstrated, and the usefulness of typing for immunogenetic markers such as HLA to complement mtDNA and Y chromosome analyses in anthropological investigations is illustrated. Expand
Molecular genetic studies of natives on Easter Island: evidence of an early European and Amerindian contribution to the Polynesian gene pool.
TLDR
There may have been an early European and Amerindian contribution to the Polynesian gene pool of Easter Island through an introduction into Easter Island in the early 1800s, or earlier. Expand
Genetic Ancestry of Rapanui before and after European Contact
TLDR
The data suggest that the Native American ancestry in contemporary Easter Islanders was not present on the island prior to European contact and may thus be due to events in more recent history. Expand
Native American Y chromosomes in Polynesia: the genetic impact of the Polynesian slave trade.
TLDR
The finding that Native American Y chromosomes are detected on the Polynesian island of Rapa is best explained as the genetic impact of a 19th century Peruvian slave trade in Polynesia, and underscores the need to account for history before turning to prehistory. Expand
Genome-wide Ancestry Patterns in Rapanui Suggest Pre-European Admixture with Native Americans
TLDR
A mostly Polynesian ancestry among Rapanui is found and genome-wide patterns consistent with Native American and European admixture are detected, which can be explained by one or more pre-European trans-Pacific contacts. Expand
Early human dispersals within the Americas
TLDR
Analysis of the oldest genomes suggests that there was an early split within Beringian populations, giving rise to the Northern and Southern lineages, and that the early population spread widely and rapidly suggests that their access to large portions of the hemisphere was essentially unrestricted, yet there are genomic and archaeological hints of an earlier human presence. Expand
Historical collections reveal patterns of diffusion of sweet potato in Oceania obscured by modern plant movements and recombination
TLDR
The results provide strong support for prehistoric transfer(s) of sweet potato from South America (Peru-Ecuador region) into Polynesia and document a temporal shift in the pattern of distribution of genetic variation in sweet potato in Oceania. Expand
Reconstructing the Population Genetic History of the Caribbean
TLDR
It is demonstrated that the ancestral components in admixed genomes can be traced back to distinct sub-continental source populations with far greater resolution than previously thought, even when limited pre-Columbian Caribbean haplotypes have survived. Expand
Ancient west Eurasian ancestry in southern and eastern Africa
TLDR
Genome-wide genetic data is used to show that there are at least two admixture events in the history of Khoisan populations (southern African hunter–gatherers and pastoralists who speak non-Bantu languages with click consonants) and that west Eurasian ancestry entered southern Africa indirectly through eastern Africa. Expand
Proceedings of the SMBE Tri-National Young Investigators' Workshop 2005. Reconstructing the origins and dispersal of the Polynesian bottle gourd (Lagenaria siceraria).
TLDR
A dual origin for the Polynesian bottle gourd is supported: the chloroplast markers are exclusively of Asian origin, but the nuclear markers show alleles originating in both the Americas and Asia. Expand
...
1
2
3
4
5
...