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Fan Z, Zhang R, Zhou A, Hey J, Song Y, Osada N, Hamada Y, Yue B, Xing J, Li J. Genomic Evidence for the Complex Evolutionary History of Macaques (Genus Macaca). J Mol Evol 2024; 92:286-299. [PMID: 38634872 DOI: 10.1007/s00239-024-10166-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 03/20/2024] [Indexed: 04/19/2024]
Abstract
The genus Macaca is widely distributed, occupies a variety of habitats, shows diverse phenotypic characteristics, and is one of the best-studied genera of nonhuman primates. Here, we reported five re-sequencing Macaca genomes, including one M. cyclopis, one M. fuscata, one M. thibetana, one M. silenus, and one M. sylvanus. Together with published genomes of other macaque species, we combined 20 genome sequences of 10 macaque species to investigate the gene introgression and genetic differences among the species. The network analysis of the SNV-fragment trees indicates a reticular phylogeny of macaque species. Combining the results from various analytical methods, we identified extensive ancient introgression events among macaque species. The multiple introgression signals between different species groups were also observed, such as between fascicularis group species and silenus group species. However, gene flow signals between fascicularis and sinica group were not as strong as those between fascicularis group and silenus group. On the other hand, the unidirect gene flow in M. arctoides probably occurred between the progenitor of M. arctoides and the common ancestor of fascicularis group. Our study also shows that the genetic backgrounds and genetic diversity of different macaques vary dramatically among species, even among populations of the same species. In conclusion, using whole genome sequences and multiple methods, we have studied the evolutionary history of the genus Macaca and provided evidence for extensive introgression among the species.
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Affiliation(s)
- Zhenxin Fan
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, People's Republic of China
| | - Rusong Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, People's Republic of China
| | - Anbo Zhou
- Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ, 08854, USA
| | - Jody Hey
- Department of Biology, Center for Computational Genetics and Genomics, Temple University, Philadelphia, PA, USA
| | - Yang Song
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, People's Republic of China
| | - Naoki Osada
- Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, 060-0814, Japan
| | - Yuzuru Hamada
- National Primate Research Center of Thailand, Chulalongkorn University, Bangkok, Thailand
| | - Bisong Yue
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, People's Republic of China
| | - Jinchuan Xing
- Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ, 08854, USA
| | - Jing Li
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, People's Republic of China.
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2
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Tan X, Qi J, Liu Z, Fan P, Liu G, Zhang L, Shen Y, Li J, Roos C, Zhou X, Li M. Phylogenomics Reveals High Levels of Incomplete Lineage Sorting at the Ancestral Nodes of the Macaque Radiation. Mol Biol Evol 2023; 40:msad229. [PMID: 37823401 PMCID: PMC10638670 DOI: 10.1093/molbev/msad229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/06/2023] [Accepted: 10/08/2023] [Indexed: 10/13/2023] Open
Abstract
The genus Macaca includes 23 species assigned into 4 to 7 groups. It exhibits the largest geographic range and represents the most successful example of adaptive radiation of nonhuman primates. However, intrageneric phylogenetic relationships among species remain controversial and have not been resolved so far. In this study, we conducted a phylogenomic analysis on 16 newly generated and 8 published macaque genomes. We found strong evidence supporting the division of this genus into 7 species groups. Incomplete lineage sorting (ILS) was the primary factor contributing to the discordance observed among gene trees; however, we also found evidence of hybridization events, specifically between the ancestral arctoides/sinica and silenus/nigra lineages that resulted in the hybrid formation of the fascicularis/mulatta group. Combined with fossil data, our phylogenomic data were used to establish a scenario for macaque radiation. These findings provide insights into ILS and potential ancient introgression events that were involved in the radiation of macaques, which will lead to a better understanding of the rapid speciation occurring in nonhuman primates.
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Affiliation(s)
- Xinxin Tan
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Geneplus-Beijing Institute, Beijing 102206, China
| | - Jiwei Qi
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhijin Liu
- College of Life Sciences, Capital Normal University, Beijing 100049, China
| | - Pengfei Fan
- School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Gaoming Liu
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Liye Zhang
- Primate Genetics Laboratory, German Primate Center, Leibniz Institute for Primate Research, Göttingen 37077, Germany
| | - Ying Shen
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jing Li
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Christian Roos
- Primate Genetics Laboratory, German Primate Center, Leibniz Institute for Primate Research, Göttingen 37077, Germany
- Gene Bank of Primates, German Primate Center, Leibniz Institute for Primate Research, Göttingen 37077, Germany
| | - Xuming Zhou
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ming Li
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
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3
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Cooper EB, Brent LJN, Snyder-Mackler N, Singh M, Sengupta A, Khatiwada S, Malaivijitnond S, Qi Hai Z, Higham JP. The natural history of model organisms: the rhesus macaque as a success story of the Anthropocene. eLife 2022; 11:78169. [PMID: 35801697 PMCID: PMC9345599 DOI: 10.7554/elife.78169] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 07/07/2022] [Indexed: 11/25/2022] Open
Abstract
Of all the non-human primate species studied by researchers, the rhesus macaque (Macaca mulatta) is likely the most widely used across biological disciplines. Rhesus macaques have thrived during the Anthropocene and now have the largest natural range of any non-human primate. They are highly social, exhibit marked genetic diversity, and display remarkable niche flexibility (which allows them to live in a range of habitats and survive on a variety of diets). These characteristics mean that rhesus macaques are well-suited for understanding the links between sociality, health and fitness, and also for investigating intra-specific variation, adaptation and other topics in evolutionary ecology.
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Affiliation(s)
- Eve B Cooper
- Department of Anthropology, New York University, New York, United States
| | | | | | - Mewa Singh
- Biopsychology Laboratory, University of Mysore, Mysuru, India
| | | | - Sunil Khatiwada
- Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, Garbatka, Poland
| | | | - Zhou Qi Hai
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin, China
| | - James P Higham
- Department of Anthropology, New York University, New York, United States
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4
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Weinbauer G, Mecklenburg L. Does Geographical Origin of Long-Tailed Macaques ( Macaca fascicularis) Matter in Drug Safety Assessment?: A Literature Review and Proposed Conclusion. Toxicol Pathol 2022; 50:552-559. [PMID: 35608013 DOI: 10.1177/01926233221095443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Long-tailed macaques are the predominant nonhuman primate species for the nonclinical safety testing of biopharmaceuticals. This species comprises 9 subspecies with Macaca fascicularis fascicularis naturally occurring in Southeast Asia. Since the 17th century, M. f. fascicularis also occurs on Mauritius. Cynomolgus macaques do not naturally occur in China, but are bred in many farms across the country. The current shortage in animal supply raises the question whether geographical animal origin matters and if animals from different geographical regions can be combined on a drug development program or even a single experiment. This article reviews geographical animal origin in relation to selected endpoints that are relevant in nonclinical drug safety testing. Animals from different countries within Asia mainland do not appear to show any meaningful difference. Very little data are available for animals from Asia island. Mauritian animals show consistent differences from Asian animals in several clinical and anatomical pathology parameters. For developmental parameters, animals from Mauritius and Asia are comparable with the exception that Mauritian animals mature faster. In the authors' view, differences between the geographical clusters can be accounted for as long as baseline and reference data are available.
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5
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Portinha B, Avril A, Bernasconi C, Helanterä H, Monaghan J, Seifert B, Sousa VC, Kulmuni J, Nouhaud P. Whole-genome analysis of multiple wood ant population pairs supports similar speciation histories, but different degrees of gene flow, across their European ranges. Mol Ecol 2022; 31:3416-3431. [PMID: 35460311 PMCID: PMC9320829 DOI: 10.1111/mec.16481] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 04/07/2022] [Accepted: 04/11/2022] [Indexed: 11/30/2022]
Abstract
The application of demographic history modelling and inference to the study of divergence between species has become a cornerstone of speciation genomics. Speciation histories are usually reconstructed by analysing single populations from each species, assuming that the inferred population history represents the actual speciation history. However, this assumption may not be met when species diverge with gene flow, for example, when secondary contact may be confined to specific geographic regions. Here, we tested whether divergence histories inferred from heterospecific populations may vary depending on their geographic locations, using the two wood ant species Formica polyctena and F. aquilonia. We performed whole‐genome resequencing of 20 individuals sampled in multiple locations across the European ranges of both species. Then, we reconstructed the histories of distinct heterospecific population pairs using a coalescent‐based approach. Our analyses always supported a scenario of divergence with gene flow, suggesting that divergence started in the Pleistocene (c. 500 kya) and occurred with continuous asymmetrical gene flow from F. aquilonia to F. polyctena until a recent time, when migration became negligible (2–19 kya). However, we found support for contemporary gene flow in a sympatric pair from Finland, where the species hybridise, but no signature of recent bidirectional gene flow elsewhere. Overall, our results suggest that divergence histories reconstructed from a few individuals may be applicable at the species level. Nonetheless, the geographical context of populations chosen to represent their species should be taken into account, as it may affect estimates of migration rates between species when gene flow is spatially heterogeneous.
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Affiliation(s)
- Beatriz Portinha
- Organismal & Evolutionary Biology Research Programme, University of Helsinki, Helsinki, Finland.,cE3c, Centre for Ecology, Evolution and Environmental changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, 1749-016, Lisboa, Portugal
| | - Amaury Avril
- Department of Ecology and Evolution, University of Lausanne, 1015, Lausanne, Switzerland
| | | | - Heikki Helanterä
- Ecology and Genetics research unit, University of Oulu, PO Box 3000, 90014, Oulu, Finland
| | | | | | - Vitor C Sousa
- cE3c, Centre for Ecology, Evolution and Environmental changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, 1749-016, Lisboa, Portugal
| | - Jonna Kulmuni
- Organismal & Evolutionary Biology Research Programme, University of Helsinki, Helsinki, Finland.,Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
| | - Pierre Nouhaud
- Organismal & Evolutionary Biology Research Programme, University of Helsinki, Helsinki, Finland
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6
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Kumpai P, Hamada Y, Kanthaswamy S, Malaivijitnond S. Gene flow from rhesus (Macaca mulatta) to cynomolgus macaques (M. fascicularis) and effects of introgressive hybridization on reproduction in two biomedically relevant non-human primate species. J Med Primatol 2022; 51:108-118. [PMID: 35132636 DOI: 10.1111/jmp.12570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND We compared the reproductive patterns of wild Indochinese and Sundaic cynomolgus macaques (Mf) exhibiting different levels of genetic admixture with rhesus macaques (Mm). METHODS Ten adult females from each Indochinese (WHM) and Sundaic (KN/KTK) Mf populations, which exhibited 50% and 15% of Mm autosomal SNPs, were selected as focal animals. Animals were observed for 12 months, and the frequencies of sexual proceptivity, attractivity and receptivity, number of newborns, and changes in sex skin were recorded. RESULTS Both populations showed all three sexual behaviors throughout the year, but they were classified as moderately seasonal breeders because their 3-month birth counts were as high as ~50%. The fecundity of WHM was lower than the KN/KTK. Changes in sex skin of WHM were more prone to Mm's pattern than the KN/KTK. CONCLUSION The introgressive gene flow from Mm to Mf does not affect Mf's sexual behaviors; however, it can impact fecundity and physiological (sex skin) changes.
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Affiliation(s)
- Prangmas Kumpai
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Yuzuru Hamada
- National Primate Research Center of Thailand, Chulalongkorn University, Saraburi, Thailand
| | - Sree Kanthaswamy
- School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University West Campus, Glendale, Arizona, USA.,California National Primate Research Center, University of California, Davis, California, USA
| | - Suchinda Malaivijitnond
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,National Primate Research Center of Thailand, Chulalongkorn University, Saraburi, Thailand
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7
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Phadphon P, Kanthaswamy S, Oldt RF, Hamada Y, Malaivijitnond S. Population Structure of Macaca fascicularis aurea, and their Genetic Relationships with M. f. fascicularis and M. mulatta Determined by 868 RADseq-Derived Autosomal SNPs-A consideration for biomedical research. J Med Primatol 2022; 51:33-44. [PMID: 34825374 PMCID: PMC8849537 DOI: 10.1111/jmp.12554] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/04/2021] [Accepted: 11/09/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND This study examined the population structure of Macaca fascicularis aurea and their genetic relationships with M. f. fascicularis and M. mulatta. METHODS The study analyzed 868 RADseq-derived SNPs from samples representing the entire distribution range of M. f. aurea, including their inter- and intraspecific hybrid zones. RESULTS The study supports a M. mulatta/Indochinese M. f. fascicularis, Sundaic M. f. fascicularis, and M. f. aurea trichotomy; M. f. aurea was genetically distinct from both forms of M. f. fascicularis and M. mulatta. Hybridization between M. f. aurea and M. f. fascicularis occurred in two directions: south-north (8°25' to 15°56') and west-east (98°28' to 99°02'). Low levels of M. mulatta introgression were also detected in M. f. aurea. CONCLUSION This study showcases a complicated scenario of genetic relationships between the M. fascicularis subspecies and between M. fascicularis and M. mulatta and underscores the importance of these taxa's population structure and genetic relationships for biomedical research.
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Affiliation(s)
- Poompat Phadphon
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sree Kanthaswamy
- School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University West Campus, Glendale, AZ, USA,California National Primate Research Center, University of California, Davis, CA, USA,Correspondence to: Suchinda Malaivijitnond, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. Tel./Fax: +66-2-2185275; ; Sree Kanthaswamy, School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University West Campus, Glendale, AZ, USA. Tel.: (602) 543-3405;
| | - Robert F. Oldt
- School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University West Campus, Glendale, AZ, USA,Evolutionary Biology Graduate Program, School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - Yuzuru Hamada
- National Primate Research Center of Thailand, Chulalongkorn University, Saraburi 18110, Thailand
| | - Suchinda Malaivijitnond
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand,National Primate Research Center of Thailand, Chulalongkorn University, Saraburi 18110, Thailand,Correspondence to: Suchinda Malaivijitnond, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. Tel./Fax: +66-2-2185275; ; Sree Kanthaswamy, School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University West Campus, Glendale, AZ, USA. Tel.: (602) 543-3405;
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8
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Genomic resources for rhesus macaques (Macaca mulatta). Mamm Genome 2022; 33:91-99. [PMID: 34999909 PMCID: PMC8742695 DOI: 10.1007/s00335-021-09922-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 09/22/2021] [Indexed: 11/10/2022]
Abstract
Rhesus macaques (Macaca mulatta) are among the most extensively studied of nonhuman primates. This species has been the subject of many investigations concerning basic primate biology and behavior, including studies of social organization, developmental psychology, physiology, endocrinology, and neurodevelopment. Rhesus macaques are also critically important as a nonhuman primate model of human health and disease, including use in studies of infectious diseases, metabolic diseases, aging, and drug or alcohol abuse. Current research addressing fundamental biological and/or applied biomedical questions benefits from various genetic and genomic analyses. As a result, the genome of rhesus macaques has been the subject of more study than most nonhuman primates. This paper briefly discusses a number of information resources that can provide interested researchers with access to genetic and genomic data describing the content of the rhesus macaque genome, available information regarding genetic variation within the species, results from studies of gene expression, and other aspects of genomic analysis. Specific online databases are discussed, including the US National Center for Biotechnology Information, the University of California Santa Cruz genome browser, Ensembl genome browser, the Macaque Genotype and Phenotype database (mGAP), Rhesusbase, and others.
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Srikulnath K, Ahmad SF, Panthum T, Malaivijitnond S. Importance of Thai macaque bioresources for biological research and human health. J Med Primatol 2021; 51:62-72. [PMID: 34806191 DOI: 10.1111/jmp.12555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 01/25/2023]
Abstract
During the past century, macaque bioresources have provided remarkable scientific and biomedical discoveries related to the understanding of human physiology, neuroanatomy, reproduction, development, cognition, and pathology. Considerable progress has been made, and an urgent need has arisen to develop infrastructure and viable settings to meet the current global demand in research models during the so-called new normal after COVID-19 era. This review highlights the critical need for macaque bioresources and proposes the establishment of a designated primate research center to integrate research in primate laboratories for the rescue and rehabilitation of wild macaques. Key areas where macaque models have been and continue to be essential for advancing fundamental knowledge in biomedical and biological research are outlined. Detailed genetic studies on macaque bioresources of Thai origin can further facilitate the rapid pace of vaccine discovery.
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Affiliation(s)
- Kornsorn Srikulnath
- National Primate Research Center of Thailand-Chulalongkorn University, Saraburi, Thailand.,Animal Genomics and Bioresource Research Center (AGB Research Center), Faculty of Science, Kasetsart University, Bangkok, Thailand.,Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Syed Farhan Ahmad
- Animal Genomics and Bioresource Research Center (AGB Research Center), Faculty of Science, Kasetsart University, Bangkok, Thailand.,Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Thitipong Panthum
- Animal Genomics and Bioresource Research Center (AGB Research Center), Faculty of Science, Kasetsart University, Bangkok, Thailand.,Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Suchinda Malaivijitnond
- National Primate Research Center of Thailand-Chulalongkorn University, Saraburi, Thailand.,Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
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10
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Song Y, Jiang C, Li KH, Li J, Qiu H, Price M, Fan ZX, Li J. Genome-wide analysis reveals signatures of complex introgressive gene flow in macaques (genus Macaca). Zool Res 2021; 42:433-449. [PMID: 34114757 PMCID: PMC8317189 DOI: 10.24272/j.issn.2095-8137.2021.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The genus Macaca serves as an ideal research model for speciation and introgressive gene flow due to its short period of diversification (about five million years ago) and rapid radiation of constituent species. To understand evolutionary gene flow in macaques, we sequenced four whole genomes (two M. arctoides and two M. thibetana) and combined them with publicly available macaque genome data for genome-wide analyses. We analyzed 14 individuals from nine Macaca species covering all Asian macaque species groups and detected extensive gene flow signals, with the strongest signals between the fascicularis and silenus species groups. Notably, we detected bidirectional gene flow between M. fascicularis and M. nemestrina. The estimated proportion of the genome inherited via gene flow between the two species was 6.19%. However, the introgression signals found among studied island species, such as Sulawesi macaques and M. fuscata, and other species were largely attributed to the genomic similarity of closely related species or ancestral introgression. Furthermore, gene flow signals varied in individuals of the same species (M. arctoides, M. fascicularis, M. mulatta, M. nemestrina and M. thibetana), suggesting very recent gene flow after the populations split. Pairwise sequentially Markovian coalescence (PSMC) analysis showed all macaques experienced a bottleneck five million years ago, after which different species exhibited different fluctuations in demographic history trajectories, implying they have experienced complicated environmental variation and climate change. These results should help improve our understanding of the complicated evolutionary history of macaques, particularly introgressive gene flow.
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Affiliation(s)
- Yang Song
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Cong Jiang
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Kun-Hua Li
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jing Li
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Hong Qiu
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Megan Price
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Zhen-Xin Fan
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.,Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jing Li
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.,Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China. E-mail:
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