Cultural Innovations Influence Patterns of Genetic Diversity in Northwestern Amazonia. (29th August 2018)
- Record Type:
- Journal Article
- Title:
- Cultural Innovations Influence Patterns of Genetic Diversity in Northwestern Amazonia. (29th August 2018)
- Main Title:
- Cultural Innovations Influence Patterns of Genetic Diversity in Northwestern Amazonia
- Authors:
- Arias, Leonardo
Schröder, Roland
Hübner, Alexander
Barreto, Guillermo
Stoneking, Mark
Pakendorf, Brigitte - Editors:
- Mulligan, Connie
- Abstract:
- Abstract: Human populations often exhibit contrasting patterns of genetic diversity in the mtDNA and the nonrecombining portion of the Y-chromosome (NRY), which reflect sex-specific cultural behaviors and population histories. Here, we sequenced 2.3 Mb of the NRY from 284 individuals representing more than 30 Native American groups from Northwestern Amazonia (NWA) and compared these data to previously generated mtDNA genomes from the same groups, to investigate the impact of cultural practices on genetic diversity and gain new insights about NWA population history. Relevant cultural practices in NWA include postmarital residential rules and linguistic exogamy, a marital practice in which men are required to marry women speaking a different language. We identified 2, 969 SNPs in the NRY sequences, only 925 of which were previously described. The NRY and mtDNA data showed different sex-specific demographic histories: female effective population size has been larger than that of males through time, which might reflect larger variance in male reproductive success. Both markers show an increase in lineage diversification beginning ∼5, 000 years ago, which may reflect the intensification of agriculture, technological innovations, and the expansion of regional trade networks documented in the archaeological evidence. Furthermore, we find similar excesses of NRY versus mtDNA between-population divergence at both the local and continental scale, suggesting long-term stability ofAbstract: Human populations often exhibit contrasting patterns of genetic diversity in the mtDNA and the nonrecombining portion of the Y-chromosome (NRY), which reflect sex-specific cultural behaviors and population histories. Here, we sequenced 2.3 Mb of the NRY from 284 individuals representing more than 30 Native American groups from Northwestern Amazonia (NWA) and compared these data to previously generated mtDNA genomes from the same groups, to investigate the impact of cultural practices on genetic diversity and gain new insights about NWA population history. Relevant cultural practices in NWA include postmarital residential rules and linguistic exogamy, a marital practice in which men are required to marry women speaking a different language. We identified 2, 969 SNPs in the NRY sequences, only 925 of which were previously described. The NRY and mtDNA data showed different sex-specific demographic histories: female effective population size has been larger than that of males through time, which might reflect larger variance in male reproductive success. Both markers show an increase in lineage diversification beginning ∼5, 000 years ago, which may reflect the intensification of agriculture, technological innovations, and the expansion of regional trade networks documented in the archaeological evidence. Furthermore, we find similar excesses of NRY versus mtDNA between-population divergence at both the local and continental scale, suggesting long-term stability of female versus male migration. We also find evidence of the impact of sociocultural practices on diversity patterns. Finally, our study highlights the importance of analyzing high-resolution mtDNA and NRY sequences to reconstruct demographic history, since this can differ considerably between sexes. … (more)
- Is Part Of:
- Molecular biology and evolution. Volume 35:Number 11(2018)
- Journal:
- Molecular biology and evolution
- Issue:
- Volume 35:Number 11(2018)
- Issue Display:
- Volume 35, Issue 11 (2018)
- Year:
- 2018
- Volume:
- 35
- Issue:
- 11
- Issue Sort Value:
- 2018-0035-0011-0000
- Page Start:
- 2719
- Page End:
- 2735
- Publication Date:
- 2018-08-29
- Subjects:
- Y-chromosome -- mtDNA -- linguistic exogamy -- population expansion -- population history
Molecular biology -- Periodicals
Molecular evolution -- Periodicals
Evolution, Molecular -- Periodicals
Molecular Biology -- Periodicals
572.8 - Journal URLs:
- http://mbe.oxfordjournals.org/ ↗
http://www.molbiolevol.org/ ↗
http://ukcatalogue.oup.com/ ↗
http://firstsearch.oclc.org ↗
http://firstsearch.oclc.org/journal=0737-7038;screen=info;ECOIP ↗ - DOI:
- 10.1093/molbev/msy169 ↗
- Languages:
- English
- ISSNs:
- 0737-4038
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5900.782000
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British Library HMNTS - ELD Digital store - Ingest File:
- 24982.xml