1
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Fenderson LE, Kovach AI, Llamas B. Spatiotemporal landscape genetics: Investigating ecology and evolution through space and time. Mol Ecol 2019; 29:218-246. [DOI: 10.1111/mec.15315] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/22/2019] [Accepted: 11/13/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Lindsey E. Fenderson
- Australian Centre for Ancient DNA School of Biological Sciences Environment Institute University of Adelaide Adelaide South Australia Australia
- Department of Natural Resources and the Environment University of New Hampshire Durham NH USA
| | - Adrienne I. Kovach
- Department of Natural Resources and the Environment University of New Hampshire Durham NH USA
| | - Bastien Llamas
- Australian Centre for Ancient DNA School of Biological Sciences Environment Institute University of Adelaide Adelaide South Australia Australia
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2
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Leonardi M, Librado P, Der Sarkissian C, Schubert M, Alfarhan AH, Alquraishi SA, Al-Rasheid KAS, Gamba C, Willerslev E, Orlando L. Evolutionary Patterns and Processes: Lessons from Ancient DNA. Syst Biol 2018; 66:e1-e29. [PMID: 28173586 PMCID: PMC5410953 DOI: 10.1093/sysbio/syw059] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 06/04/2016] [Accepted: 06/06/2016] [Indexed: 12/02/2022] Open
Abstract
Ever since its emergence in 1984, the field of ancient DNA has struggled to overcome the challenges related to the decay of DNA molecules in the fossil record. With the recent development of high-throughput DNA sequencing technologies and molecular techniques tailored to ultra-damaged templates, it has now come of age, merging together approaches in phylogenomics, population genomics, epigenomics, and metagenomics. Leveraging on complete temporal sample series, ancient DNA provides direct access to the most important dimension in evolution—time, allowing a wealth of fundamental evolutionary processes to be addressed at unprecedented resolution. This review taps into the most recent findings in ancient DNA research to present analyses of ancient genomic and metagenomic data.
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Affiliation(s)
- Michela Leonardi
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Pablo Librado
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Clio Der Sarkissian
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Mikkel Schubert
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Ahmed H Alfarhan
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Saleh A Alquraishi
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Cristina Gamba
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Eske Willerslev
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark.,Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ludovic Orlando
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark.,Université de Toulouse, University Paul Sabatier (UPS), Laboratoire AMIS, Toulouse, France
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3
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Tammone MN, Pardiñas UFJ, Lacey EA. Contrasting patterns of Holocene genetic variation in two parapatric species of Ctenomys from Northern Patagonia, Argentina. Biol J Linn Soc Lond 2017. [DOI: 10.1093/biolinnean/blx118] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Mauro N Tammone
- Instituto de Diversidad y Evolución Austral (IDEAus-CONICET), Argentina
- Programa de Estudios Aplicados a la Conservación del Parque Nacional Nahuel Huapi (CENAC-PNNH, CONICET), Argentina
| | | | - Eileen A Lacey
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California, USA
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4
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Abstract
Mobility is one of the most important processes shaping spatiotemporal patterns of variation in genetic, morphological, and cultural traits. However, current approaches for inferring past migration episodes in the fields of archaeology and population genetics lack either temporal resolution or formal quantification of the underlying mobility, are poorly suited to spatially and temporally sparsely sampled data, and permit only limited systematic comparison between different time periods or geographic regions. Here we present an estimator of past mobility that addresses these issues by explicitly linking trait differentiation in space and time. We demonstrate the efficacy of this estimator using spatiotemporally explicit simulations and apply it to a large set of ancient genomic data from Western Eurasia. We identify a sequence of changes in human mobility from the Late Pleistocene to the Iron Age. We find that mobility among European Holocene farmers was significantly higher than among European hunter-gatherers both pre- and postdating the Last Glacial Maximum. We also infer that this Holocene rise in mobility occurred in at least three distinct stages: the first centering on the well-known population expansion at the beginning of the Neolithic, and the second and third centering on the beginning of the Bronze Age and the late Iron Age, respectively. These findings suggest a strong link between technological change and human mobility in Holocene Western Eurasia and demonstrate the utility of this framework for exploring changes in mobility through space and time.
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5
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MacHugh DE, Larson G, Orlando L. Taming the Past: Ancient DNA and the Study of Animal Domestication. Annu Rev Anim Biosci 2016; 5:329-351. [PMID: 27813680 DOI: 10.1146/annurev-animal-022516-022747] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
During the last decade, ancient DNA research has been revolutionized by the availability of increasingly powerful DNA sequencing and ancillary genomics technologies, giving rise to the new field of paleogenomics. In this review, we show how our understanding of the genetic basis of animal domestication and the origins and dispersal of livestock and companion animals during the Upper Paleolithic and Neolithic periods is being rapidly transformed through new scientific knowledge generated with paleogenomic methods. These techniques have been particularly informative in revealing high-resolution patterns of artificial and natural selection and evidence for significant admixture between early domestic animal populations and their wild congeners.
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Affiliation(s)
- David E MacHugh
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland; .,UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin 4, Ireland
| | - Greger Larson
- Palaeogenomics & Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford OX1 3QY, United Kingdom;
| | - Ludovic Orlando
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark; .,Université de Toulouse, University Paul Sabatier, Laboratoire AMIS, CNRS UMR 5288, 31000 Toulouse, France
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6
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Duforet-Frebourg N, Slatkin M. Isolation-by-distance-and-time in a stepping-stone model. Theor Popul Biol 2016; 108:24-35. [PMID: 26592162 PMCID: PMC4779737 DOI: 10.1016/j.tpb.2015.11.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 10/26/2015] [Accepted: 11/03/2015] [Indexed: 01/30/2023]
Abstract
With the great advances in ancient DNA extraction, genetic data are now obtained from geographically separated individuals from both present and past. However, population genetics theory about the joint effect of space and time has not been thoroughly studied. Based on the classical stepping-stone model, we develop the theory of Isolation by distance and time. We derive the correlation of allele frequencies between demes in the case where ancient samples are present, and investigate the impact of edge effects with forward-in-time simulations. We also derive results about coalescent times in circular and toroidal models. As one of the most common ways to investigate population structure is principal components analysis (PCA), we evaluate the impact of our theory on PCA plots. Our results demonstrate that time between samples is an important factor. Ancient samples tend to be drawn to the center of a PCA plot.
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Affiliation(s)
- Nicolas Duforet-Frebourg
- Department of Integrative Biology, University of California Berkeley, Berkeley, CA 94720, United States.
| | - Montgomery Slatkin
- Department of Integrative Biology, University of California Berkeley, Berkeley, CA 94720, United States
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Malmström H, Linderholm A, Skoglund P, Storå J, Sjödin P, Gilbert MTP, Holmlund G, Willerslev E, Jakobsson M, Lidén K, Götherström A. Ancient mitochondrial DNA from the northern fringe of the Neolithic farming expansion in Europe sheds light on the dispersion process. Philos Trans R Soc Lond B Biol Sci 2015; 370:20130373. [PMID: 25487325 DOI: 10.1098/rstb.2013.0373] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The European Neolithization process started around 12 000 years ago in the Near East. The introduction of agriculture spread north and west throughout Europe and a key question has been if this was brought about by migrating individuals, by an exchange of ideas or a by a mixture of these. The earliest farming evidence in Scandinavia is found within the Funnel Beaker Culture complex (Trichterbecherkultur, TRB) which represents the northernmost extension of Neolithic farmers in Europe. The TRB coexisted for almost a millennium with hunter-gatherers of the Pitted Ware Cultural complex (PWC). If migration was a substantial part of the Neolithization, even the northerly TRB community would display a closer genetic affinity to other farmer populations than to hunter-gatherer populations. We deep-sequenced the mitochondrial hypervariable region 1 from seven farmers (six TRB and one Battle Axe complex, BAC) and 13 hunter-gatherers (PWC) and authenticated the sequences using postmortem DNA damage patterns. A comparison with 124 previously published sequences from prehistoric Europe shows that the TRB individuals share a close affinity to Central European farmer populations, and that they are distinct from hunter-gatherer groups, including the geographically close and partially contemporary PWC that show a close affinity to the European Mesolithic hunter-gatherers.
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Affiliation(s)
- Helena Malmström
- Department of Evolutionary Biology, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden
| | - Anna Linderholm
- Archaeological Research Laboratory, Department of Archaeology and Classical Studies, Stockholm University, 106 91 Stockholm, Sweden Durham Evolution and Ancient DNA, Department of Archaeology, Durham University, South Road, Durham DH1 3LE, UK
| | - Pontus Skoglund
- Department of Evolutionary Biology, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden
| | - Jan Storå
- Osteolarchaeological Research Laboratory, Department of Archaeology and Classical Studies, Stockholm University, 106 91 Stockholm, Sweden
| | - Per Sjödin
- Department of Evolutionary Biology, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden
| | - M Thomas P Gilbert
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Volgade 5-7, 1350 Copenhagen, Denmark
| | - Gunilla Holmlund
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping University, Artillerigatan 12, 587 58, Linköping, Sweden Department of Clinical and Experimental Medicine, Linköping University, Artillerigatan 12, 587 58, Linköping, Sweden
| | - Eske Willerslev
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Volgade 5-7, 1350 Copenhagen, Denmark
| | - Mattias Jakobsson
- Department of Evolutionary Biology, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Kerstin Lidén
- Archaeological Research Laboratory, Department of Archaeology and Classical Studies, Stockholm University, 106 91 Stockholm, Sweden
| | - Anders Götherström
- Department of Evolutionary Biology, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden Archaeological Research Laboratory, Department of Archaeology and Classical Studies, Stockholm University, 106 91 Stockholm, Sweden
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8
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Scheu A, Powell A, Bollongino R, Vigne JD, Tresset A, Çakırlar C, Benecke N, Burger J. The genetic prehistory of domesticated cattle from their origin to the spread across Europe. BMC Genet 2015; 16:54. [PMID: 26018295 PMCID: PMC4445560 DOI: 10.1186/s12863-015-0203-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 04/20/2015] [Indexed: 11/25/2022] Open
Abstract
Background Cattle domestication started in the 9th millennium BC in Southwest Asia. Domesticated cattle were then introduced into Europe during the Neolithic transition. However, the scarcity of palaeogenetic data from the first European domesticated cattle still inhibits the accurate reconstruction of their early demography. In this study, mitochondrial DNA from 193 ancient and 597 modern domesticated cattle (Bos taurus) from sites across Europe, Western Anatolia and Iran were analysed to provide insight into the Neolithic dispersal process and the role of the local European aurochs population during cattle domestication. Results Using descriptive summary statistics and serial coalescent simulations paired with approximate Bayesian computation we find: (i) decreasing genetic diversity in a southeast to northwest direction, (ii) strong correlation of genetic and geographical distances, iii) an estimated effective size of the Near Eastern female founder population of 81, iv) that the expansion of cattle from the Near East and Anatolia into Europe does not appear to constitute a significant bottleneck, and that v) there is evidence for gene-flow between the Near Eastern/Anatolian and European cattle populations in the early phases of the European Neolithic, but that it is restricted after 5,000 BCE. Conclusions The most plausible scenario to explain these results is a single and regionally restricted domestication process of cattle in the Near East with subsequent migration into Europe during the Neolithic transition without significant maternal interbreeding with the endogenous wild stock. Evidence for gene-flow between cattle populations from Southwestern Asia and Europe during the earlier phases of the European Neolithic points towards intercontinental trade connections between Neolithic farmers. Electronic supplementary material The online version of this article (doi:10.1186/s12863-015-0203-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Amelie Scheu
- Johannes Gutenberg-University Mainz, Institute of Anthropology, Palaeogenetics Group, 55099, Mainz, Germany. .,German Archaeological Institute, Scientific Department, Im Dol 2-6, Haus 2, 14195, Berlin, Germany.
| | - Adam Powell
- Johannes Gutenberg-University Mainz, Institute of Anthropology, Palaeogenetics Group, 55099, Mainz, Germany.
| | - Ruth Bollongino
- Johannes Gutenberg-University Mainz, Institute of Anthropology, Palaeogenetics Group, 55099, Mainz, Germany. .,Muséum National d'Histoire Naturelle, UMR7209, "Archéozoologie, archéobotanique: sociétés, pratiques et environnements", InEE, Département d'Ecologie et Gestion de la Biodiversité, CP 56, 55 rue Buffon, 75005, Paris, Cedex 05, France.
| | - Jean-Denis Vigne
- Muséum National d'Histoire Naturelle, UMR7209, "Archéozoologie, archéobotanique: sociétés, pratiques et environnements", InEE, Département d'Ecologie et Gestion de la Biodiversité, CP 56, 55 rue Buffon, 75005, Paris, Cedex 05, France.
| | - Anne Tresset
- Muséum National d'Histoire Naturelle, UMR7209, "Archéozoologie, archéobotanique: sociétés, pratiques et environnements", InEE, Département d'Ecologie et Gestion de la Biodiversité, CP 56, 55 rue Buffon, 75005, Paris, Cedex 05, France.
| | - Canan Çakırlar
- University of Groningen, Institute of Archaeology, Poststraat 6, NL-9712 ER, Groningen, Netherlands.
| | - Norbert Benecke
- German Archaeological Institute, Scientific Department, Im Dol 2-6, Haus 2, 14195, Berlin, Germany.
| | - Joachim Burger
- Johannes Gutenberg-University Mainz, Institute of Anthropology, Palaeogenetics Group, 55099, Mainz, Germany.
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9
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Niemi M, Bläuer A, Iso-Touru T, Harjula J, Nyström Edmark V, Rannamäe E, Lõugas L, Sajantila A, Lidén K, Taavitsainen JP. Temporal fluctuation in North East Baltic Sea region cattle population revealed by mitochondrial and Y-chromosomal DNA analyses. PLoS One 2015; 10:e0123821. [PMID: 25992976 PMCID: PMC4439080 DOI: 10.1371/journal.pone.0123821] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 03/07/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Ancient DNA analysis offers a way to detect changes in populations over time. To date, most studies of ancient cattle have focused on their domestication in prehistory, while only a limited number of studies have analysed later periods. Conversely, the genetic structure of modern cattle populations is well known given the undertaking of several molecular and population genetic studies. RESULTS Bones and teeth from ancient cattle populations from the North-East Baltic Sea region dated to the Prehistoric (Late Bronze and Iron Age, 5 samples), Medieval (14), and Post-Medieval (26) periods were investigated by sequencing 667 base pairs (bp) from the mitochondrial DNA (mtDNA) and 155 bp of intron 19 in the Y-chromosomal UTY gene. Comparison of maternal (mtDNA haplotypes) genetic diversity in ancient cattle (45 samples) with modern cattle populations in Europe and Asia (2094 samples) revealed 30 ancient mtDNA haplotypes, 24 of which were shared with modern breeds, while 6 were unique to the ancient samples. Of seven Y-chromosomal sequences determined from ancient samples, six were Y2 and one Y1 haplotype. Combined data including Swedish samples from the same periods (64 samples) was compared with the occurrence of Y-chromosomal haplotypes in modern cattle (1614 samples). CONCLUSIONS The diversity of haplogroups was highest in the Prehistoric samples, where many haplotypes were unique. The Medieval and Post-Medieval samples also show a high diversity with new haplotypes. Some of these haplotypes have become frequent in modern breeds in the Nordic Countries and North-Western Russia while other haplotypes have remained in only a few local breeds or seem to have been lost. A temporal shift in Y-chromosomal haplotypes from Y2 to Y1 was detected that corresponds with the appearance of new mtDNA haplotypes in the Medieval and Post-Medieval period. This suggests a replacement of the Prehistoric mtDNA and Y chromosomal haplotypes by new types of cattle.
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Affiliation(s)
- Marianna Niemi
- Biotechnology and Food Research, MTT Agrifood Research Finland, Jokioinen, Finland
- University of Helsinki, Department of Forensic Medicine, Helsinki, Finland
- * E-mail:
| | - Auli Bläuer
- Biotechnology and Food Research, MTT Agrifood Research Finland, Jokioinen, Finland
- Department of Archaeology, University of Turku, Turku, Finland
| | - Terhi Iso-Touru
- Biotechnology and Food Research, MTT Agrifood Research Finland, Jokioinen, Finland
| | - Janne Harjula
- Biotechnology and Food Research, MTT Agrifood Research Finland, Jokioinen, Finland
- Department of Archaeology, University of Turku, Turku, Finland
| | | | - Eve Rannamäe
- Institute of History and Archaeology, University of Tartu, Tartu, Estonia
| | - Lembi Lõugas
- Institute of history, Tallinn University, Tallinn, Estonia
| | - Antti Sajantila
- University of Helsinki, Department of Forensic Medicine, Helsinki, Finland
| | - Kerstin Lidén
- Archaeological Research Laboratory, Stockholm University, Stockholm, Sweden
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10
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Orlando L, Cooper A. Using Ancient DNA to Understand Evolutionary and Ecological Processes. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2014. [DOI: 10.1146/annurev-ecolsys-120213-091712] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Ancient DNA provides a unique means to record genetic change through time and directly observe evolutionary and ecological processes. Although mostly based on mitochondrial DNA, the increasing availability of genomic sequences is leading to unprecedented levels of resolution. Temporal studies of population genetics have revealed dynamic patterns of change in many large vertebrates, featuring localized extinctions, migrations, and population bottlenecks. The pronounced climate cycles of the Late Pleistocene have played a key role, reducing the taxonomic and genetic diversity of many taxa and shaping modern populations. Importantly, the complex series of events revealed by ancient DNA data is seldom reflected in current biogeographic patterns. DNA preserved in ancient sediments and coprolites has been used to characterize a range of paleoenvironments and reconstruct functional relationships in paleoecological systems. In the near future, genome-level surveys of ancient populations will play an increasingly important role in revealing, calibrating, and testing evolutionary processes.
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Affiliation(s)
- Ludovic Orlando
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350K Copenhagen, Denmark;,
| | - Alan Cooper
- Australian Center for Ancient DNA, University of Adelaide, Adelaide, South Australia
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11
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Skoglund P, Sjödin P, Skoglund T, Lascoux M, Jakobsson M. Investigating population history using temporal genetic differentiation. Mol Biol Evol 2014; 31:2516-27. [PMID: 24939468 PMCID: PMC4137715 DOI: 10.1093/molbev/msu192] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The rapid advance of sequencing technology, coupled with improvements in molecular methods for obtaining genetic data from ancient sources, holds the promise of producing a wealth of genomic data from time-separated individuals. However, the population-genetic properties of time-structured samples have not been extensively explored. Here, we consider the implications of temporal sampling for analyses of genetic differentiation and use a temporal coalescent framework to show that complex historical events such as size reductions, population replacements, and transient genetic barriers between populations leave a footprint of genetic differentiation that can be traced through history using temporal samples. Our results emphasize explicit consideration of the temporal structure when making inferences and indicate that genomic data from ancient individuals will greatly increase our ability to reconstruct population history.
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Affiliation(s)
- Pontus Skoglund
- Department of Evolutionary Biology, Uppsala University, Uppsala, Sweden
| | - Per Sjödin
- Department of Evolutionary Biology, Uppsala University, Uppsala, Sweden
| | - Tobias Skoglund
- Department of Evolutionary Biology, Uppsala University, Uppsala, SwedenDepartment of Information Technology, Uppsala University, Uppsala, Sweden
| | - Martin Lascoux
- Department of Ecology and Genetics, Program in Plant Ecology and Evolution, Uppsala University, Uppsala, SwedenScience for Life Laboratory, Uppsala, Sweden
| | - Mattias Jakobsson
- Department of Evolutionary Biology, Uppsala University, Uppsala, SwedenScience for Life Laboratory, Uppsala, Sweden
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12
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Lagerholm VK, Sandoval-Castellanos E, Ehrich D, Abramson NI, Nadachowski A, Kalthoff DC, Germonpré M, Angerbjörn A, Stewart JR, Dalén L. On the origin of the Norwegian lemming. Mol Ecol 2014; 23:2060-71. [DOI: 10.1111/mec.12698] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 01/31/2014] [Accepted: 02/07/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Vendela K. Lagerholm
- Department of Bioinformatics and Genetics; Swedish Museum of Natural History; 10405 Stockholm Sweden
- Department of Zoology; Stockholm University; 10405 Stockholm Sweden
| | - Edson Sandoval-Castellanos
- Department of Bioinformatics and Genetics; Swedish Museum of Natural History; 10405 Stockholm Sweden
- Department of Zoology; Stockholm University; 10405 Stockholm Sweden
| | - Dorothee Ehrich
- Department of Arctic and Marine Biology; The Arctic University of Norway UiT; Tromsø 9037 Norway
| | - Natalia I. Abramson
- Zoological Institute; Russian Academy of Sciences; St. Petersburg 199034 Russia
| | - Adam Nadachowski
- Institute of Systematics and Evolution of Animals; Polish Academy of Sciences; Kraków 31-016 Poland
| | - Daniela C. Kalthoff
- Department of Zoology; Swedish Museum of Natural History; 10405 Stockholm Sweden
| | - Mietje Germonpré
- Operational Direction “Earth and History of Life”; Royal Belgian Institute of Natural Sciences; 1000 Brussels Belgium
| | | | - John R. Stewart
- Faculty of Science and Technology; Bournemouth University; Dorset BH12 5BB UK
| | - Love Dalén
- Department of Bioinformatics and Genetics; Swedish Museum of Natural History; 10405 Stockholm Sweden
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13
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Extinct New Zealand megafauna were not in decline before human colonization. Proc Natl Acad Sci U S A 2014; 111:4922-7. [PMID: 24639531 DOI: 10.1073/pnas.1314972111] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The extinction of New Zealand's moa (Aves: Dinornithiformes) followed the arrival of humans in the late 13th century and was the final event of the prehistoric Late Quaternary megafauna extinctions. Determining the state of the moa populations in the pre-extinction period is fundamental to understanding the causes of the event. We sampled 281 moa individuals and combined radiocarbon dating with ancient DNA analyses to help resolve the extinction debate and gain insights into moa biology. The samples, which were predominantly from the last 4,000 years preceding the extinction, represent four sympatric moa species excavated from five adjacent fossil deposits. We characterized the moa assemblage using mitochondrial DNA and nuclear microsatellite markers developed specifically for moa. Although genetic diversity differed significantly among the four species, we found that the millennia preceding the extinction were characterized by a remarkable degree of genetic stability in all species, with no loss of heterozygosity and no shifts in allele frequencies over time. The extinction event itself was too rapid to be manifested in the moa gene pools. Contradicting previous claims of a decline in moa before Polynesian settlement in New Zealand, our findings indicate that the populations were large and stable before suddenly disappearing. This interpretation is supported by approximate Bayesian computation analyses. Our analyses consolidate the disappearance of moa as the most rapid, human-facilitated megafauna extinction documented to date.
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14
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Horn S, Prost S, Stiller M, Makowiecki D, Kuznetsova T, Benecke N, Pucher E, Hufthammer AK, Schouwenburg C, Shapiro B, Hofreiter M. Ancient mitochondrial DNA and the genetic history of Eurasian beaver (Castor fiber) in Europe. Mol Ecol 2014; 23:1717-29. [DOI: 10.1111/mec.12691] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Susanne Horn
- Max Planck Institute for Evolutionary Anthropology; Deutscher Platz 6 Leipzig Germany
| | - Stefan Prost
- Department of Anatomy; Allan Wilson Centre for Molecular Ecology and Evolution; University of Otago; 270 Great King Street Dunedin 9054 New Zealand
- Department of Integrative Biology; University of California; 1005 Valley Life Sciences Bldg. #3140 Berkeley CA 94720-3140 USA
- Department of Biodiversity Informatics and Genetics; Swedish Museum of Natural History; Box 50007 10405 Stockholm Sweden
| | - Mathias Stiller
- Department of Ecology and Evolutionary Biology; University of California Santa Cruz; 1156 High Street Santa Cruz CA 95064 USA
| | - Daniel Makowiecki
- Institute of Archaeology; Nicolaus Copernicus University; Szosa Bydgoska 44/48 PL 87-100 Toruń Poland
| | - Tatiana Kuznetsova
- Department of Paleontology; Faculty of Geology; Moscow State University; Leninskie Gory 1 MSU Moscow 119991 Russia
| | - Norbert Benecke
- Scientific Department of the Head Office; German Archaeological Institute; Im Dol 2-6 (Haus I) D-14195 Berlin Germany
| | - Erich Pucher
- Department for Zooarchaeology; Natural History Museum Vienna; Burgring 7 A-1010 Vienna Austria
| | - Anne K. Hufthammer
- University Museum Bergen; University of Bergen; Post box 7800 5020 Bergen Norway
| | | | - Beth Shapiro
- Department of Ecology and Evolutionary Biology; University of California Santa Cruz; 1156 High Street Santa Cruz CA 95064 USA
| | - Michael Hofreiter
- Department of Biology; University of York; Wentworth Way; Heslington York YO31 7SG UK
- Evolutionary and Adaptive Genomics; Institute of Biochemistry and Biology; Faculty of Mathematics and Life Sciences; University of Potsdam; Karl-Liebknecht-Straße 24-25; 14476 Potsdam Germany
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Welch AJ, Wiley AE, James HF, Ostrom PH, Stafford TW, Fleischer RC. Ancient DNA reveals genetic stability despite demographic decline: 3,000 years of population history in the endemic Hawaiian petrel. Mol Biol Evol 2012; 29:3729-40. [PMID: 22844071 DOI: 10.1093/molbev/mss185] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In the Hawaiian Islands, human colonization, which began approximately 1,200 to 800 years ago, marks the beginning of a period in which nearly 75% of the endemic avifauna became extinct and the population size and range of many additional species declined. It remains unclear why some species persisted whereas others did not. The endemic Hawaiian petrel (Pterodroma sandwichensis) has escaped extinction, but colonies on two islands have been extirpated and populations on remaining islands have contracted. We obtained mitochondrial DNA sequences from 100 subfossil bones, 28 museum specimens, and 289 modern samples to investigate patterns of gene flow and temporal changes in the genetic diversity of this endangered species over the last 3,000 years, as Polynesians and then Europeans colonized the Hawaiian Islands. Genetic differentiation was found to be high between both modern and ancient petrel populations. However, gene flow was substantial between the extirpated colonies on Oahu and Molokai and modern birds from the island of Lanai. No significant reductions in genetic diversity occurred over this period, despite fears in the mid-1900s that this species may have been extinct. Simulations show that even a decline to a stable effective population size of 100 individuals would result in the loss of only 5% of the expected heterozygosity. Simulations also show that high levels of genetic diversity may be retained due to the long generation time of this species. Such decoupling between population size and genetic diversity in long-lived species can have important conservation implications. It appears that a pattern of dispersal from declining colonies, in addition to long generation time, may have allowed the Hawaiian petrel to escape a severe genetic bottleneck, and the associated extinction vortex, and persist despite a large population decline after human colonization.
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Affiliation(s)
- Andreanna J Welch
- Smithsonian Conservation Biology Institute, Center for Conservation and Evolutionary Genetics, National Zoological Park, Washington, DC, USA.
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16
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Dalén L, Orlando L, Shapiro B, Brandström-Durling M, Quam R, Gilbert MTP, Díez Fernández-Lomana JC, Willerslev E, Arsuaga JL, Götherström A. Partial genetic turnover in neandertals: continuity in the East and population replacement in the West. Mol Biol Evol 2012; 29:1893-7. [PMID: 22362080 DOI: 10.1093/molbev/mss074] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Remarkably little is known about the population-level processes leading up to the extinction of the neandertal. To examine this, we use mitochondrial DNA sequences from 13 neandertal individuals, including a novel sequence from northern Spain, to examine neandertal demographic history. Our analyses indicate that recent western European neandertals (<48 kyr) constitute a tightly defined group with low mitochondrial genetic variation in comparison with both eastern and older (>48 kyr) European neandertals. Using control region sequences, Bayesian demographic simulations provide higher support for a model of population fragmentation followed by separate demographic trajectories in subpopulations over a null model of a single stable population. The most parsimonious explanation for these results is that of a population turnover in western Europe during early Marine Isotope Stage 3, predating the arrival of anatomically modern humans in the region.
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17
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Kirsanow K, Burger J. Ancient human DNA. Ann Anat 2012; 194:121-32. [PMID: 22169595 DOI: 10.1016/j.aanat.2011.11.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 11/07/2011] [Accepted: 11/08/2011] [Indexed: 12/11/2022]
Abstract
The contribution of palaeogenetic data to the study of various aspects of hominin biology and evolution has been significant, and has the potential to increase substantially with the widespread implementation of next generation sequencing techniques. Here we discuss the present state-of-the-art of ancient human DNA analysis and the characteristics of hominin aDNA that make sequence validation particularly complex. A brief overview of the development of anthropological palaeogenetic analysis is given to illustrate the technical challenges motivating recent technological advancements.
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Affiliation(s)
- Karola Kirsanow
- Johannes Gutenberg-University Mainz, Institute of Anthropology, Germany
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18
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Chan YL, Hadly EA. Genetic variation over 10,000 years in Ctenomys: comparative phylochronology provides a temporal perspective on rarity, environmental change and demography. Mol Ecol 2011; 20:4592-605. [PMID: 22008209 DOI: 10.1111/j.1365-294x.2011.05295.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
An understanding of how ecological traits influence past species response to environmental change can aid our future predictions of species persistence. We used ancient DNA and serial coalescent modelling in a hypothesis-testing framework to reveal differences in temporal genetic variation over 10,000 years for two species of subterranean rodents that currently differ in rarity (abundance, range size and habitat specificity) and mating system, but that reside in the same volcanically active region. Comparative phylochronologic analyses indicated little genetic change and suggest genetic stability in the solitary widespread Ctenomys haigi over thousands of years. In contrast, we found a pattern of haplotypic turnover in the rare and currently endangered Ctenomys sociabilis. Serial coalescent modelling indicated that the best-fit models of microevolutionary change included gene flow between isolated populations for this species. Although C. haigi and C. sociabilis are congeners that share many life history traits, they have behavioural, habitat-preference and population-size differences that may have resulted in contrasting patterns of temporal variation during periods of environmental change.
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Affiliation(s)
- Yvonne L Chan
- Department of Biology, 371 Serra Mall, Stanford University, Stanford, CA 94305-5020, USA.
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19
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Lye GC, Lepais O, Goulson D. Reconstructing demographic events from population genetic data: the introduction of bumblebees to New Zealand. Mol Ecol 2011; 20:2888-900. [PMID: 21645159 DOI: 10.1111/j.1365-294x.2011.05139.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Four British bumblebee species (Bombus terrestris, Bombus hortorum, Bombus ruderatus and Bombus subterraneus) became established in New Zealand following their introduction at the turn of the last century. Of these, two remain common in the United Kingdom (B. terrestris and B. hortorum), whilst two (B. ruderatus and B. subterraneus) have undergone marked declines, the latter being declared extinct in 2000. The presence of these bumblebees in New Zealand provides an unique system in which four related species have been isolated from their source population for over 100 years, providing a rare opportunity to examine the impacts of an initial bottleneck and introduction to a novel environment on their population genetics. We used microsatellite markers to compare modern populations of B. terrestris, B. hortorum and B. ruderatus in the United Kingdom and New Zealand and to compare museum specimens of British B. subterraneus with the current New Zealand population. We used approximate Bayesian computation to estimate demographic parameters of the introduction history, notably to estimate the number of founders involved in the initial introduction. Species-specific patterns derived from genetic analysis were consistent with the predictions based on the presumed history of these populations; demographic events have left a marked genetic signature on all four species. Approximate Bayesian analyses suggest that the New Zealand population of B. subterraneus may have been founded by as few as two individuals, giving rise to low genetic diversity and marked genetic divergence from the (now extinct) UK population.
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Affiliation(s)
- G C Lye
- School of Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, UK.
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20
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Excoffier L, Foll M. fastsimcoal: a continuous-time coalescent simulator of genomic diversity under arbitrarily complex evolutionary scenarios. Bioinformatics 2011; 27:1332-4. [DOI: 10.1093/bioinformatics/btr124] [Citation(s) in RCA: 343] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Skoglund P, Götherström A, Jakobsson M. Estimation of population divergence times from non-overlapping genomic sequences: examples from dogs and wolves. Mol Biol Evol 2010; 28:1505-17. [PMID: 21177316 DOI: 10.1093/molbev/msq342] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Despite recent technological advances in DNA sequencing, incomplete coverage remains to be an issue in population genomics, in particular for studies that include ancient samples. Here, we describe an approach to estimate population divergence times for non-overlapping sequence data that is based on probabilities of different genealogical topologies under a structured coalescent model. We show that the approach can be adapted to accommodate common problems such as sequencing errors and postmortem nucleotide misincorporations, and we use simulations to investigate biases involved with estimating genealogical topologies from empirical data. The approach relies on three reference genomes and should be particularly useful for future analysis of genomic data that comprise of nonoverlapping sets of sequences, potentially from different points in time. We applied the method to shotgun sequence data from an ancient wolf together with extant dogs and wolves and found striking resemblance to previously described fine-scale population structure among dog breeds. When comparing modern dogs to four geographically distinct wolves, we find that the divergence time between dogs and an Indian wolf is smallest, followed by the divergence times to a Chinese wolf and a Spanish wolf, and a relatively long divergence time to an Alaskan wolf, suggesting that the origin of modern dogs is somewhere in Eurasia, potentially southern Asia. We find that less than two-thirds of all loci in the boxer and poodle genomes are more similar to each other than to a modern gray wolf and that--assuming complete isolation without gene flow--the divergence time between gray wolves and modern European dogs extends to 3,500 generations before the present, corresponding to approximately 10,000 years ago (95% confidence interval [CI]: 9,000-13,000). We explicitly study the effect of gene flow between dogs and wolves on our estimates and show that a low rate of gene flow is compatible with an even earlier domestication date ∼30,000 years ago (95% CI: 15,000-90,000). This observation is in agreement with recent archaeological findings and indicates that human behavior necessary for domestication of wild animals could have appeared much earlier than the development of agriculture.
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Affiliation(s)
- Pontus Skoglund
- Department of Evolutionary Biology, Uppsala University, Uppsala, Sweden.
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22
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CAMPOS PAULAF, KRISTENSEN TOMMY, ORLANDO LUDOVIC, SHER ANDREI, KHOLODOVA MARINAV, GÖTHERSTRÖM ANDERS, HOFREITER MICHAEL, DRUCKER DOROTHÉEG, KOSINTSEV PAVEL, TIKHONOV ALEXEI, BARYSHNIKOV GENNADYF, WILLERSLEV ESKE, GILBERT MTHOMASP. Ancient DNA sequences point to a large loss of mitochondrial genetic diversity in the saiga antelope (Saiga tatarica) since the Pleistocene. Mol Ecol 2010; 19:4863-75. [DOI: 10.1111/j.1365-294x.2010.04826.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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NAVASCUÉS MIGUEL, DEPAULIS FRANTZ, EMERSON BRENTC. Combining contemporary and ancient DNA in population genetic and phylogeographical studies. Mol Ecol Resour 2010; 10:760-72. [DOI: 10.1111/j.1755-0998.2010.02895.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Pilot M, Branicki W, Jedrzejewski W, Goszczyński J, Jedrzejewska B, Dykyy I, Shkvyrya M, Tsingarska E. Phylogeographic history of grey wolves in Europe. BMC Evol Biol 2010; 10:104. [PMID: 20409299 PMCID: PMC2873414 DOI: 10.1186/1471-2148-10-104] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Accepted: 04/21/2010] [Indexed: 02/06/2023] Open
Abstract
Background While it is generally accepted that patterns of intra-specific genetic differentiation are substantially affected by glacial history, population genetic processes occurring during Pleistocene glaciations are still poorly understood. In this study, we address the question of the genetic consequences of Pleistocene glaciations for European grey wolves. Combining our data with data from published studies, we analysed phylogenetic relationships and geographic distribution of mitochondrial DNA haplotypes for 947 contemporary European wolves. We also compared the contemporary wolf sequences with published sequences of 24 ancient European wolves. Results We found that haplotypes representing two haplogroups, 1 and 2, overlap geographically, but substantially differ in frequency between populations from south-western and eastern Europe. A comparison between haplotypes from Europe and other continents showed that both haplogroups are spread throughout Eurasia, while only haplogroup 1 occurs in contemporary North American wolves. All ancient wolf samples from western Europe that dated from between 44,000 and 1,200 years B.P. belonged to haplogroup 2, suggesting the long-term predominance of this haplogroup in this region. Moreover, a comparison of current and past frequencies and distributions of the two haplogroups in Europe suggested that haplogroup 2 became outnumbered by haplogroup 1 during the last several thousand years. Conclusions Parallel haplogroup replacement, with haplogroup 2 being totally replaced by haplogroup 1, has been reported for North American grey wolves. Taking into account the similarity of diets reported for the late Pleistocene wolves from Europe and North America, the correspondence between these haplogroup frequency changes may suggest that they were associated with ecological changes occurring after the Last Glacial Maximum.
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Affiliation(s)
- Małgorzata Pilot
- Museum and Institute of Zoology, Polish Academy of Sciences, 00-679 Warszawa, Poland.
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25
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Mona S, Catalano G, Lari M, Larson G, Boscato P, Casoli A, Sineo L, Di Patti C, Pecchioli E, Caramelli D, Bertorelle G. Population dynamic of the extinct European aurochs: genetic evidence of a north-south differentiation pattern and no evidence of post-glacial expansion. BMC Evol Biol 2010; 10:83. [PMID: 20346116 PMCID: PMC2858146 DOI: 10.1186/1471-2148-10-83] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Accepted: 03/26/2010] [Indexed: 11/17/2022] Open
Abstract
Background The aurochs (Bos primigenius) was a large bovine that ranged over almost the entirety of the Eurasian continent and North Africa. It is the wild ancestor of the modern cattle (Bos taurus), and went extinct in 1627 probably as a consequence of human hunting and the progressive reduction of its habitat. To investigate in detail the genetic history of this species and to compare the population dynamics in different European areas, we analysed Bos primigenius remains from various sites across Italy. Results Fourteen samples provided ancient DNA fragments from the mitochondrial hypervariable region. Our data, jointly analysed with previously published sequences, support the view that Italian aurochsen were genetically similar to modern bovine breeds, but very different from northern/central European aurochsen. Bayesian analyses and coalescent simulations indicate that the genetic variation pattern in both Italian and northern/central European aurochsen is compatible with demographic stability after the last glaciation. We provide evidence that signatures of population expansion can erroneously arise in stable aurochsen populations when the different ages of the samples are not taken into account. Conclusions Distinct groups of aurochsen probably inhabited Italy and northern/central Europe after the last glaciation, respectively. On the contrary, Italian and Fertile Crescent aurochsen likely shared several mtDNA sequences, now common in modern breeds. We argue that a certain level of genetic homogeneity characterized aurochs populations in Southern Europe and the Middle East, and also that post-glacial recolonization of northern and central Europe advanced, without major demographic expansions, from eastern, and not southern, refugia.
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Affiliation(s)
- Stefano Mona
- Dipartimento di Biologia ed Evoluzione, Università di Ferrara, Ferrara, Italy
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26
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Ancient DNA analyses exclude humans as the driving force behind late Pleistocene musk ox (Ovibos moschatus) population dynamics. Proc Natl Acad Sci U S A 2010; 107:5675-80. [PMID: 20212118 DOI: 10.1073/pnas.0907189107] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The causes of the late Pleistocene megafaunal extinctions are poorly understood. Different lines of evidence point to climate change, the arrival of humans, or a combination of these events as the trigger. Although many species went extinct, others, such as caribou and bison, survived to the present. The musk ox has an intermediate story: relatively abundant during the Pleistocene, it is now restricted to Greenland and the Arctic Archipelago. In this study, we use ancient DNA sequences, temporally unbiased summary statistics, and Bayesian analytical techniques to infer musk ox population dynamics throughout the late Pleistocene and Holocene. Our results reveal that musk ox genetic diversity was much higher during the Pleistocene than at present, and has undergone several expansions and contractions over the past 60,000 years. Northeast Siberia was of key importance, as it was the geographic origin of all samples studied and held a large diverse population until local extinction at approximately 45,000 radiocarbon years before present ((14)C YBP). Subsequently, musk ox genetic diversity reincreased at ca. 30,000 (14)C YBP, recontracted at ca. 18,000 (14)C YBP, and finally recovered in the middle Holocene. The arrival of humans into relevant areas of the musk ox range did not affect their mitochondrial diversity, and both musk ox and humans expanded into Greenland concomitantly. Thus, their population dynamics are better explained by a nonanthropogenic cause (for example, environmental change), a hypothesis supported by historic observations on the sensitivity of the species to both climatic warming and fluctuations.
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Geller JB, Darling JA, Carlton JT. Genetic perspectives on marine biological invasions. ANNUAL REVIEW OF MARINE SCIENCE 2010; 2:367-93. [PMID: 21141669 DOI: 10.1146/annurev.marine.010908.163745] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The extent to which the geographic distributions of marine organisms have been reshaped by human activities remains underappreciated, and so does, consequently, the impact of invasive species on marine ecosystems. The application of molecular genetic data in fields such as population genetics, phylogeography, and evolutionary biology have improved our ability to make inferences regarding invasion histories. Genetic methods have helped to resolve longstanding questions regarding the cryptogenic status of marine species, facilitated recognition of cryptic marine biodiversity, and provided means to determine the sources of introduced marine populations and to begin to recover the patterns of anthropogenic reshuffling of the ocean's biota. These approaches stand to aid materially in the development of effective management strategies and sustainable science-based policies. Continued advancements in the statistical analysis of genetic data promise to overcome some existing limitations of current approaches. Still other limitations will be best addressed by concerted collaborative and multidisciplinary efforts that recognize the important synergy between understanding the extent of biological invasions and coming to a more complete picture of both modern-day and historical marine biogeography.
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Affiliation(s)
- Jonathan B Geller
- Moss Landing Marine Laboratories, Moss Landing, California 95039, USA.
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28
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NAVASCUÉS MIGUEL, EMERSON BRENTC. Elevated substitution rate estimates from ancient DNA: model violation and bias of Bayesian methods. Mol Ecol 2009; 18:4390-7. [DOI: 10.1111/j.1365-294x.2009.04333.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Jakobsson M. COMPASS: a program for generating serial samples under an infinite sites model. Bioinformatics 2009; 25:2845-7. [PMID: 19762347 DOI: 10.1093/bioinformatics/btp534] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
SUMMARY The program COMPASS can generate samples that have been collected at various points in time from a population that is evolving according to a Wright-Fisher model. The samples are generated using coalescence simulations permitting various demographic scenarios and the program uses an infinite sites model to generate polymorphism data for the samples. By generating serially sampled population-genetic data, COMPASS allows investigating properties of polymorphism data that has been collected at different time points, and aid in making inference from ancient polymorphism data. AVAILABILITY The program and the manual are available at: http://www.egs.uu.se/evbiol/Research/JakobssonLab/compass.html CONTACT mattias.jakobsson@ebc.uu.se.
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Affiliation(s)
- Mattias Jakobsson
- Department of Evolutionary Biology, Uppsala University, Norbyvägen 18D, 75236 Uppsala, Sweden.
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30
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de Bruyn M, Hall BL, Chauke LF, Baroni C, Koch PL, Hoelzel AR. Rapid response of a marine mammal species to holocene climate and habitat change. PLoS Genet 2009; 5:e1000554. [PMID: 19593366 PMCID: PMC2700269 DOI: 10.1371/journal.pgen.1000554] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2009] [Accepted: 06/09/2009] [Indexed: 12/03/2022] Open
Abstract
Environmental change drives demographic and evolutionary processes that determine diversity within and among species. Tracking these processes during periods of change reveals mechanisms for the establishment of populations and provides predictive data on response to potential future impacts, including those caused by anthropogenic climate change. Here we show how a highly mobile marine species responded to the gain and loss of new breeding habitat. Southern elephant seal, Mirounga leonina, remains were found along the Victoria Land Coast (VLC) in the Ross Sea, Antarctica, 2,500 km from the nearest extant breeding site on Macquarie Island (MQ). This habitat was released after retreat of the grounded ice sheet in the Ross Sea Embayment 7,500–8,000 cal YBP, and is within the range of modern foraging excursions from the MQ colony. Using ancient mtDNA and coalescent models, we tracked the population dynamics of the now extinct VLC colony and the connectivity between this and extant breeding sites. We found a clear expansion signal in the VLC population ∼8,000 YBP, followed by directional migration away from VLC and the loss of diversity at ∼1,000 YBP, when sea ice is thought to have expanded. Our data suggest that VLC seals came initially from MQ and that some returned there once the VLC habitat was lost, ∼7,000 years later. We track the founder-extinction dynamics of a population from inception to extinction in the context of Holocene climate change and present evidence that an unexpectedly diverse, differentiated breeding population was founded from a distant source population soon after habitat became available. In order to understand how biodiversity is generated and maintained over time, we need to understand the process by which populations form and diverge. Natural variation within species is typically partitioned among populations, which sometimes forms the basis for speciation events. One mechanism for the establishment of novel variation at the population level is through a response to emerging habitat. Here we use data from ancient DNA to show how elephant seal populations responded when new breeding habitat was gained and then lost over the course of approximately 7,000 years. We show that the seals quickly took advantage of newly available breeding habitat, far from the nearest extant breeding site, and that a highly diverse and genetically differentiated population was established over a matter of generations. The key factors were likely the abundant local food resource and extensive physical habitat that allowed rapid expansion after the initial founder event and a tendency for females to return to annual breeding sites in this species. Tracking the founder-extinction dynamics of historical populations provides insight into the likely implications of future environmental change. This is an important tool in our efforts to mitigate the impact of human-induced change.
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Affiliation(s)
- Mark de Bruyn
- School of Biological Sciences, University of Durham, Durham, United Kingdom
- * E-mail: (MdB); (ARH)
| | - Brenda L. Hall
- Climate Change Institute and Department of Earth Sciences, University of Maine, Orono, Maine, United States of America
| | - Lucas F. Chauke
- Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
| | - Carlo Baroni
- Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy
| | - Paul L. Koch
- Department of Earth and Planetary Sciences, University of California, Santa Cruz, California, United States of America
| | - A. Rus Hoelzel
- School of Biological Sciences, University of Durham, Durham, United Kingdom
- * E-mail: (MdB); (ARH)
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