1
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A boundary between occurrences of mitochondrial cytochrome b haplotypes as well as mito-nuclear discordance in the house mouse Mus musculus from the northern area of Tochigi Prefecture, Japan. Mamm Biol 2022. [DOI: 10.1007/s42991-022-00338-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Maltsev AN, Kotenkova EV. Phylogeographic Structure of the House Mouse Mus musculus in Eastern Europe and Asia according to Analysis of the Control Region (D-Loop) of mtDNA. BIOL BULL+ 2022. [DOI: 10.1134/s1062359022020133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Genomic Analysis Reveals Subdivision of Black Rats (Rattus rattus) in India, Origin of the Worldwide Species Spread. Genes (Basel) 2022; 13:genes13020267. [PMID: 35205312 PMCID: PMC8871742 DOI: 10.3390/genes13020267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 12/04/2022] Open
Abstract
In contrast to the detailed and globally extensive studies on the spread of the commensal black rat, Rattus rattus, there has been relatively little work on the phylogeography of the species within India, from where this spread originated. Taking a genomic approach, we typed 27 R. rattus samples from Peninsular India using the genotyping-by-sequencing (GBS) method. Filtering and alignment of the FASTQ files yielded 1499 genome-wide SNPs. Phylogenomic tree reconstruction revealed a distinct subdivision in the R. rattus population, manifested as two clusters corresponding to the east and west coasts of India. We also identified signals of admixture between these two subpopulations, separated by an Fst of 0.20. This striking genomic difference between the east and west coast populations mirrors what has previously been described with mitochondrial DNA sequencing. It is notable that the west coast population of R. rattus has been spread globally, reflecting the origins of commensalism of the species in Western India and the subsequent transport by humans worldwide.
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4
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Bímová BV, Macholán M, Ďureje Ľ, Bímová KB, Martincová I, Piálek J. Sperm quality, aggressiveness and generation turnover may facilitate unidirectional Y chromosome introgression across the European house mouse hybrid zone. Heredity (Edinb) 2020; 125:200-211. [PMID: 32528080 DOI: 10.1038/s41437-020-0330-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/29/2020] [Accepted: 06/03/2020] [Indexed: 12/19/2022] Open
Abstract
The widespread and locally massive introgression of Y chromosomes of the eastern house mouse (Mus musculus musculus) into the range of the western subspecies (M. m. domesticus) in Central Europe calls for an explanation of its underlying mechanisms. Given the paternal inheritance pattern, obvious candidates for traits mediating the introgression are characters associated with sperm quantity and quality. We can also expect traits such as size, aggression or the length of generation cycles to facilitate the spread. We have created two consomic strains carrying the non-recombining region of the Y chromosome of the opposite subspecies, allowing us to study introgression in both directions, something impossible in nature due to the unidirectionality of introgression. We analyzed several traits potentially related to male fitness. Transmission of the domesticus Y onto the musculus background had negative effects on all studied traits. Likewise, domesticus males possessing the musculus Y had, on average, smaller body and testes and lower sperm count than the parental strain. However, the same consomic males tended to produce less- dissociated sperm heads, to win more dyadic encounters, and to have shorter generation cycles than pure domesticus males. These data suggest that the domesticus Y is disadvantageous on the musculus background, while introgression in the opposite direction can confer a recognizable, though not always significant, selective advantage. Our results are thus congruent with the unidirectional musculus → domesticus Y chromosome introgression in Central Europe. In addition to some previous studies, they show this to be a multifaceted phenomenon demanding a multidisciplinary approach.
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Affiliation(s)
- Barbora Vošlajerová Bímová
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Květná 8, 603 65, Brno, Czech Republic.,Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Veveří 97, 602 00, Brno, Czech Republic
| | - Miloš Macholán
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Veveří 97, 602 00, Brno, Czech Republic. .,Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic.
| | - Ľudovít Ďureje
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Květná 8, 603 65, Brno, Czech Republic
| | - Kateřina Berchová Bímová
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences in Prague, Kamýcká 1176, 165 00, Prague, Czech Republic
| | - Iva Martincová
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Květná 8, 603 65, Brno, Czech Republic
| | - Jaroslav Piálek
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Květná 8, 603 65, Brno, Czech Republic
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5
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Balard A, Jarquín-Díaz VH, Jost J, Martincová I, Ďureje Ľ, Piálek J, Macholán M, Goüy de Bellocq J, Baird SJE, Heitlinger E. Intensity of infection with intracellular Eimeria spp. and pinworms is reduced in hybrid mice compared to parental subspecies. J Evol Biol 2020; 33:435-448. [PMID: 31834960 DOI: 10.1111/jeb.13578] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 11/20/2019] [Accepted: 12/09/2019] [Indexed: 11/27/2022]
Abstract
Genetic diversity in animal immune systems is usually beneficial. In hybrid recombinants, this is less clear, as the immune system could also be impacted by genetic conflicts. In the European house mouse hybrid zone, the long-standing impression that hybrid mice are more highly parasitized and less fit than parentals persists despite the findings of recent studies. Working across a novel transect, we assessed infections by intracellular protozoans, Eimeria spp., and infections by extracellular macroparasites, pinworms. For Eimeria, we found lower intensities in hybrid hosts than in parental mice but no evidence of lowered probability of infection or increased mortality in the centre of the hybrid zone. This means ecological factors are very unlikely to be responsible for the reduced load of infected hybrids. Focusing on parasite intensity (load in infected hosts), we also corroborated reduced pinworm loads reported for hybrid mice in previous studies. We conclude that intensity of diverse parasites, including the previously unstudied Eimeria, is reduced in hybrid mice compared to parental subspecies. We suggest caution in extrapolating this to differences in hybrid host fitness in the absence of, for example, evidence for a link between parasitemia and health.
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Affiliation(s)
- Alice Balard
- Department of Molecular Parasitology, Institute for Biology, Humboldt University Berlin (HU), Berlin, Germany.,Leibniz-Institut für Zoo- und Wildtierforschung (IZW) im Forschungsverbund Berlin e.V., Berlin, Germany
| | - Víctor Hugo Jarquín-Díaz
- Department of Molecular Parasitology, Institute for Biology, Humboldt University Berlin (HU), Berlin, Germany.,Leibniz-Institut für Zoo- und Wildtierforschung (IZW) im Forschungsverbund Berlin e.V., Berlin, Germany
| | - Jenny Jost
- Department of Molecular Parasitology, Institute for Biology, Humboldt University Berlin (HU), Berlin, Germany.,Leibniz-Institut für Zoo- und Wildtierforschung (IZW) im Forschungsverbund Berlin e.V., Berlin, Germany
| | - Iva Martincová
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czech Republic
| | - Ľudovít Ďureje
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czech Republic
| | - Jaroslav Piálek
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czech Republic
| | - Miloš Macholán
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Brno, Czech Republic
| | - Joëlle Goüy de Bellocq
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czech Republic
| | - Stuart J E Baird
- Research Facility Studenec, Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czech Republic
| | - Emanuel Heitlinger
- Department of Molecular Parasitology, Institute for Biology, Humboldt University Berlin (HU), Berlin, Germany.,Leibniz-Institut für Zoo- und Wildtierforschung (IZW) im Forschungsverbund Berlin e.V., Berlin, Germany
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6
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Abstract
Mice (Mus musculus) and rats (Rattus norvegicus) have long served as model systems for biomedical research. However, they are also excellent models for studying the evolution of populations, subspecies, and species. Within the past million years, they have spread in various waves across large parts of the globe, with the most recent spread in the wake of human civilization. They have developed into commensal species, but have also been able to colonize extreme environments on islands free of human civilization. Given that ample genomic and genetic resources are available for these species, they have thus also become ideal mammalian systems for evolutionary studies on adaptation and speciation, particularly in the combination with the rapid developments in population genomics. The chapter provides an overview of the systems and their history, as well as of available resources.
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Affiliation(s)
- Kristian K Ullrich
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany.
| | - Diethard Tautz
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
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7
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Martincová I, Ďureje Ľ, Kreisinger J, Macholán M, Piálek J. Phenotypic effects of the Y chromosome are variable and structured in hybrids among house mouse recombinant lines. Ecol Evol 2019; 9:6124-6137. [PMID: 31161024 PMCID: PMC6540687 DOI: 10.1002/ece3.5196] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 04/03/2019] [Indexed: 12/12/2022] Open
Abstract
Hybrid zones between divergent populations sieve genomes into blocks that introgress across the zone, and blocks that do not, depending on selection between interacting genes. Consistent with Haldane's rule, the Y chromosome has been considered counterselected and hence not to introgress across the European house mouse hybrid zone. However, recent studies detected massive invasion of M. m. musculus Y chromosomes into M. m. domesticus territory. To understand mechanisms facilitating Y spread, we created 31 recombinant lines from eight wild-derived strains representing four localities within the two mouse subspecies. These lines were reciprocally crossed and resulting F1 hybrid males scored for five phenotypic traits associated with male fitness. Molecular analyses of 51 Y-linked SNPs attributed ~50% of genetic variation to differences between the subspecies and 8% to differentiation within both taxa. A striking proportion, 21% (frequencies of sperm head abnormalities) and 42% (frequencies of sperm tail dissociations), of phenotypic variation was explained by geographic Y chromosome variants. Our crossing design allowed this explanatory power to be examined across a hierarchical scale from subspecific to local intrastrain effects. We found that divergence and variation were expressed diversely in different phenotypic traits and varied across the whole hierarchical scale. This finding adds another dimension of complexity to studies of Y introgression not only across the house mouse hybrid zone but potentially also in other contact zones.
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Affiliation(s)
- Iva Martincová
- Research Facility Studenec, Institute of Vertebrate BiologyCzech Academy of SciencesBrnoCzech Republic
- Department of Botany and Zoology, Faculty of ScienceMasaryk UniversityBrnoCzech Republic
| | - Ľudovít Ďureje
- Research Facility Studenec, Institute of Vertebrate BiologyCzech Academy of SciencesBrnoCzech Republic
| | - Jakub Kreisinger
- Department of Zoology, Faculty of ScienceCharles University in PraguePragueCzech Republic
| | - Miloš Macholán
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and GeneticsCzech Academy of SciencesBrnoCzech Republic
| | - Jaroslav Piálek
- Research Facility Studenec, Institute of Vertebrate BiologyCzech Academy of SciencesBrnoCzech Republic
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8
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Goüy de Bellocq J, Wasimuddin, Ribas A, Bryja J, Piálek J, Baird SJE. Holobiont suture zones: Parasite evidence across the European house mouse hybrid zone. Mol Ecol 2018; 27:5214-5227. [PMID: 30427096 DOI: 10.1111/mec.14938] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 02/06/2023]
Abstract
Parasite hybrid zones resulting from host secondary contact have never been described in nature although parasite hybridization is well known and secondary contact should affect them similarly to free-living organisms. When host populations are isolated, diverge and recontact, intimate parasites (host specific, direct life cycle) carried during isolation will also meet and so may form parasite hybrid zones. If so, we hypothesize these should be narrower than the host's hybrid zone as shorter parasite generation time allows potentially higher divergence. We investigate multilocus genetics of two parasites across the European house mouse hybrid zone. We find each host taxon harbours its own parasite taxa. These also hybridize: Parasite hybrid zones are significantly narrower than the host's. Here, we show a host hybrid zone is a suture zone for a subset of its parasite community and highlight the potential of such systems as windows on the evolutionary processes of host-parasite interactions and recombinant pathogen emergence.
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Affiliation(s)
| | - Wasimuddin
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic.,Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Alexis Ribas
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic.,Section of Parasitology, Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
| | - Josef Bryja
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic.,Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jaroslav Piálek
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic
| | - Stuart J E Baird
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic
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9
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Evidence of functional Cd94 polymorphism in a free-living house mouse population. Immunogenetics 2018; 71:321-333. [PMID: 30535636 DOI: 10.1007/s00251-018-01100-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 11/30/2018] [Indexed: 02/06/2023]
Abstract
The CD94 receptor, expressed on natural killer (NK) and CD8+ T cells, is known as a relatively non-polymorphic receptor with orthologues in humans, other primates, cattle, and rodents. In the house mouse (Mus musculus), a single allele is highly conserved among laboratory strains, and reports of allelic variation in lab- or wild-living mice are lacking, except for deficiency in one lab strain (DBA/2J). The non-classical MHC-I molecule Qa-1b is the ligand for mouse CD94/NKG2A, presenting alternative non-americ fragment of leader peptides (Qa-1 determinant modifier (Qdm)) from classical MHC-I molecules. Here, we report a novel allele identified in free-living house mice captured in Norway, living among individuals carrying the canonical Cd94 allele. The novel Cd94LocA allele encodes 12 amino acid substitutions in the extracellular lectin-like domain. Flow cytometric analysis of primary NK cells and transfected cells indicates that the substitutions prevent binding of CD94 mAb and Qa-1b/Qdm tetramers. Our data further indicate correlation of Cd94 polymorphism with the two major subspecies of house mice in Europe. Together, these findings suggest that the Cd94LocA/NKG2A heterodimeric receptor is widely expressed among M. musculus subspecies musculus, with ligand-binding properties different from mice of subspecies domesticus, such as the C57BL/6 strain.
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10
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Čížková D, Baird SJE, Těšíková J, Voigt S, Ľudovít Ď, Piálek J, Goüy de Bellocq J. Host subspecific viral strains in European house mice: Murine cytomegalovirus in the Eastern (Mus musculus musculus) and Western house mouse (Mus musculus domesticus). Virology 2018; 521:92-98. [PMID: 29894896 DOI: 10.1016/j.virol.2018.05.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/27/2018] [Accepted: 05/28/2018] [Indexed: 01/14/2023]
Abstract
Murine cytomegalovirus (MCMV) has been reported from house mice (Mus musculus) worldwide, but only recently from Eastern house mice (M. m. musculus), of particular interest because they form a semi-permeable species barrier in Europe with Western house mice, M. m. domesticus. Here we report genome sequences of EastMCMV (from Eastern mice), and set these in the context of MCMV genomes from genus Mus hosts. We show EastMCMV and WestMCMV are genetically distinct. Phylogeny splitting analyses show a genome wide (94%) pattern consistent with no West-East introgression, the major exception (3.8%) being a genome-terminal region of duplicated genes involved in host immune system evasion. As expected from its function, this is a region of maintenance of ancestral polymorphism: The lack of clear splitting signal cannot be interpreted as evidence of introgression. The EastMCMV genome sequences reported here can therefore serve as a well-described resource for exploration of murid MCMV diversity.
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Affiliation(s)
- Dagmar Čížková
- Institute of Vertebrate Biology of the Czech Academy of Sciences, Brno, Czech Republic.
| | - Stuart J E Baird
- Institute of Vertebrate Biology of the Czech Academy of Sciences, Brno, Czech Republic
| | - Jana Těšíková
- Institute of Vertebrate Biology of the Czech Academy of Sciences, Brno, Czech Republic; Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Sebastian Voigt
- Department of Pediatric Oncology/Hematology/Stem Cell Transplantation, Charité-Universitätsmedizin, Berlin, Germany; Department of Infectious Diseases, Robert Koch Institute, Berlin, Germany
| | - Ďureje Ľudovít
- Institute of Vertebrate Biology of the Czech Academy of Sciences, Brno, Czech Republic
| | - Jaroslav Piálek
- Institute of Vertebrate Biology of the Czech Academy of Sciences, Brno, Czech Republic
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11
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Sciuchetti L, Dufresnes C, Cavoto E, Brelsford A, Perrin N. Dobzhansky-Muller incompatibilities, dominance drive, and sex-chromosome introgression at secondary contact zones: A simulation study. Evolution 2018; 72:1350-1361. [PMID: 29806172 DOI: 10.1111/evo.13510] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 05/08/2018] [Indexed: 11/28/2022]
Abstract
Dobzhansky-Muller (DM) incompatibilities involving sex chromosomes have been proposed to account for Haldane's rule (lowered fitness among hybrid offspring of the heterogametic sex) as well as Darwin's corollary (asymmetric fitness costs with respect to the direction of the cross). We performed simulation studies of a hybrid zone to investigate the effects of different types of DM incompatibilities on cline widths and positions of sex-linked markers. From our simulations, X-Y incompatibilities generate steep clines for both X-linked and Y-linked markers; random effects may produce strong noise in cline center positions when migration is high relative to fitness costs, but X- and Y-centers always coincide strictly. X-autosome and Y-autosome incompatibilities also generate steep clines, but systematic shifts in cline centers occur when migration is high relative to selection, as a result of a dominance drive linked to Darwin's corollary. Interestingly, sex-linked genes always show farther introgression than the associated autosomal genes. We discuss ways of disentangling the potentially confounding effects of sex biases in migration, we compare our results to those of a few documented contact zones, and we stress the need to study independent replicates of the same contact zone.
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Affiliation(s)
- Luca Sciuchetti
- Department of Ecology & Evolution, University of Lausanne, Biophore Building, Lausanne, 1015, Switzerland
| | - Christophe Dufresnes
- Department of Ecology & Evolution, University of Lausanne, Biophore Building, Lausanne, 1015, Switzerland
- Department of Animal & Plant Sciences, University of Sheffield, Alfred Denny building, Western Bank, Sheffield, S10 2TN, United Kingdom
| | - Elisa Cavoto
- Department of Ecology & Evolution, University of Lausanne, Biophore Building, Lausanne, 1015, Switzerland
| | - Alan Brelsford
- Department of Ecology & Evolution, University of Lausanne, Biophore Building, Lausanne, 1015, Switzerland
- Biology Department, University of California, Riverside, CA, 92521
| | - Nicolas Perrin
- Department of Ecology & Evolution, University of Lausanne, Biophore Building, Lausanne, 1015, Switzerland
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12
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Puckett EE, Park J, Combs M, Blum MJ, Bryant JE, Caccone A, Costa F, Deinum EE, Esther A, Himsworth CG, Keightley PD, Ko A, Lundkvist Å, McElhinney LM, Morand S, Robins J, Russell J, Strand TM, Suarez O, Yon L, Munshi-South J. Global population divergence and admixture of the brown rat (Rattus norvegicus). Proc Biol Sci 2017; 283:rspb.2016.1762. [PMID: 27798305 DOI: 10.1098/rspb.2016.1762] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 09/26/2016] [Indexed: 11/12/2022] Open
Abstract
Native to China and Mongolia, the brown rat (Rattus norvegicus) now enjoys a worldwide distribution. While black rats and the house mouse tracked the regional development of human agricultural settlements, brown rats did not appear in Europe until the 1500s, suggesting their range expansion was a response to relatively recent increases in global trade. We inferred the global phylogeography of brown rats using 32 k SNPs, and detected 13 evolutionary clusters within five expansion routes. One cluster arose following a southward expansion into Southeast Asia. Three additional clusters arose from two independent eastward expansions: one expansion from Russia to the Aleutian Archipelago, and a second to western North America. Westward expansion resulted in the colonization of Europe from which subsequent rapid colonization of Africa, the Americas and Australasia occurred, and multiple evolutionary clusters were detected. An astonishing degree of fine-grained clustering between and within sampling sites underscored the extent to which urban heterogeneity shaped genetic structure of commensal rodents. Surprisingly, few individuals were recent migrants, suggesting that recruitment into established populations is limited. Understanding the global population structure of R. norvegicus offers novel perspectives on the forces driving the spread of zoonotic disease, and aids in development of rat eradication programmes.
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Affiliation(s)
- Emily E Puckett
- Louis Calder Center, Biological Field Station, Fordham University, Armonk, NY 10504, USA
| | - Jane Park
- Louis Calder Center, Biological Field Station, Fordham University, Armonk, NY 10504, USA
| | - Matthew Combs
- Louis Calder Center, Biological Field Station, Fordham University, Armonk, NY 10504, USA
| | - Michael J Blum
- Xavier Center for Bioenvironmental Research, Tulane University, New Orleans, LA 70112, USA
| | | | - Adalgisa Caccone
- Department of Ecology and Evolutionary Biology, Yale University, PO Box 208106, New Haven, CT 06520-8106, USA
| | - Federico Costa
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Brazil
| | - Eva E Deinum
- Ashworth Laboratories, Institute of Evolutionary Biology, University of Edinburgh, Charlotte Auerbach Road, Edinburgh EH9 3FL, UK.,Mathematical and Statistical Methods Group, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - Alexandra Esther
- Federal Research Centre for Cultivated Plants, Institute for Plant Protection in Horticulture and Forests, Vertebrate Research, Julius Kühn Institute, Münster, Germany
| | - Chelsea G Himsworth
- Animal Health Centre, British Columbia Ministry of Agriculture, 1767 Angus Campbell Road, Abbotsford, British Columbia, Canada V3G 2M3
| | - Peter D Keightley
- Ashworth Laboratories, Institute of Evolutionary Biology, University of Edinburgh, Charlotte Auerbach Road, Edinburgh EH9 3FL, UK
| | - Albert Ko
- Laboratory of Epidemiology and Public Health, Yale University, New Haven, CT, USA
| | - Åke Lundkvist
- Department of Medical Biochemistry and Microbiology, Zoonosis Science Center, Uppsala University, Uppsala, Sweden
| | - Lorraine M McElhinney
- Wildlife Zoonoses and Vector Borne Disease Research Group, Animal and Plant Health Agency (APHA), Woodham Lane, New Haw Surrey, UK
| | - Serge Morand
- CNRS-CIRAD, Centre d'Infectiologie Christophe Mérieux du Laos, Vientiane, Lao PDR
| | - Judith Robins
- Department of Anthropology, University of Auckland, Private Bag 92019, Auckland, New Zealand.,School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - James Russell
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand.,Department of Statistics, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Tanja M Strand
- Department of Medical Biochemistry and Microbiology, Zoonosis Science Center, Uppsala University, Uppsala, Sweden
| | - Olga Suarez
- Laboratorio de Ecologia de Roedores Urbanos, IEGEBA-CONICET, EGE-Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Pabellon II, Ciudad Universitaria (C1428EHA), Buenos Aires, Argentina
| | - Lisa Yon
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - Jason Munshi-South
- Louis Calder Center, Biological Field Station, Fordham University, Armonk, NY 10504, USA
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13
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Genetic structure and invasion history of the house mouse (Mus musculus domesticus) in Senegal, West Africa: a legacy of colonial and contemporary times. Heredity (Edinb) 2017; 119:64-75. [PMID: 28353686 DOI: 10.1038/hdy.2017.18] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 02/24/2017] [Accepted: 02/25/2017] [Indexed: 02/07/2023] Open
Abstract
Knowledge of the genetic make-up and demographic history of invasive populations is critical to understand invasion mechanisms. Commensal rodents are ideal models to study whether complex invasion histories are typical of introductions involving human activities. The house mouse Mus musculus domesticus is a major invasive synanthropic rodent originating from South-West Asia. It has been largely studied in Europe and on several remote islands, but the genetic structure and invasion history of this taxon have been little investigated in several continental areas, including West Africa. In this study, we focussed on invasive populations of M. m. domesticus in Senegal. In this focal area for European settlers, the distribution area and invasion spread of the house mouse is documented by decades of data on commensal rodent communities. Genetic variation at one mitochondrial locus and 16 nuclear microsatellite markers was analysed from individuals sampled in 36 sites distributed across the country. A combination of phylogeographic and population genetics methods showed that there was a single introduction event on the northern coast of Senegal, from an exogenous (probably West European) source, followed by a secondary introduction from northern Senegal into a coastal site further south. The geographic locations of these introduction sites were consistent with the colonial history of Senegal. Overall, the marked microsatellite genetic structure observed in Senegal, even between sites located close together, revealed a complex interplay of different demographic processes occurring during house mouse spatial expansion, including sequential founder effects and stratified dispersal due to human transport along major roads.
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14
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Sarver BA, Keeble S, Cosart T, Tucker PK, Dean MD, Good JM. Phylogenomic Insights into Mouse Evolution Using a Pseudoreference Approach. Genome Biol Evol 2017; 9:726-739. [PMID: 28338821 PMCID: PMC5381554 DOI: 10.1093/gbe/evx034] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2017] [Indexed: 12/15/2022] Open
Abstract
Comparative genomic studies are now possible across a broad range of evolutionary timescales, but the generation and analysis of genomic data across many different species still present a number of challenges. The most sophisticated genotyping and down-stream analytical frameworks are still predominantly based on comparisons to high-quality reference genomes. However, established genomic resources are often limited within a given group of species, necessitating comparisons to divergent reference genomes that could restrict or bias comparisons across a phylogenetic sample. Here, we develop a scalable pseudoreference approach to iteratively incorporate sample-specific variation into a genome reference and reduce the effects of systematic mapping bias in downstream analyses. To characterize this framework, we used targeted capture to sequence whole exomes (∼54 Mbp) in 12 lineages (ten species) of mice spanning the Mus radiation. We generated whole exome pseudoreferences for all species and show that this iterative reference-based approach improved basic genomic analyses that depend on mapping accuracy while preserving the associated annotations of the mouse reference genome. We then use these pseudoreferences to resolve evolutionary relationships among these lineages while accounting for phylogenetic discordance across the genome, contributing an important resource for comparative studies in the mouse system. We also describe patterns of genomic introgression among lineages and compare our results to previous studies. Our general approach can be applied to whole or partitioned genomic data and is easily portable to any system with sufficient genomic resources, providing a useful framework for phylogenomic studies in mice and other taxa.
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Affiliation(s)
- Brice A.J. Sarver
- Division of Biological Sciences, University of Montana, Missoula, MT
| | - Sara Keeble
- Division of Biological Sciences, University of Montana, Missoula, MT
| | - Ted Cosart
- Division of Biological Sciences, University of Montana, Missoula, MT
| | - Priscilla K. Tucker
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI
| | - Matthew D. Dean
- Molecular and Computational Biology, University of Southern California, Los Angeles, CA
| | - Jeffrey M. Good
- Division of Biological Sciences, University of Montana, Missoula, MT
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15
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Wasimuddin, Bryja J, Ribas A, Baird SJE, Piálek J, Goüy de Bellocq J. Testing parasite 'intimacy': the whipworm Trichuris muris in the European house mouse hybrid zone. Ecol Evol 2016; 6:2688-701. [PMID: 27064973 PMCID: PMC4798833 DOI: 10.1002/ece3.2022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 01/25/2016] [Accepted: 01/27/2016] [Indexed: 01/01/2023] Open
Abstract
Host‐parasite interaction studies across hybrid zones often focus on host genetic variation, treating parasites as homogeneous. ‘Intimately’ associated hosts and parasites might be expected to show similar patterns of genetic structure. In the literature, factors such as no intermediate host and no free‐living stage have been proposed as ‘intimacy’ factors likely constraining parasites to closely follow the evolutionary history of their hosts. To test whether the whipworm, Trichuris muris, is intimately associated with its house mouse host, we studied its population genetics across the European house mouse hybrid zone (HMHZ) which has a strong central barrier to gene flow between mouse taxa. T. muris has a direct life cycle and nonmobile free stage: if these traits constrain the parasite to an intimate association with its host we expect a geographic break in the parasite genetic structure across the HMHZ. We genotyped 205 worms from 56 localities across the HMHZ and additionally T. muris collected from sympatric woodmice (Apodemus spp.) and allopatric murine species, using mt‐COX1, ITS1‐5.8S‐ITS2 rDNA and 10 microsatellites. We show four haplogroups of mt‐COX1 and three clear ITS1‐5.8S‐ITS2 clades in the HMHZ suggesting a complex demographic/phylogeographic history. Microsatellites show strong structure between groups of localities. However, no marker type shows a break across the HMHZ. Whipworms from Apodemus in the HMHZ cluster, and share mitochondrial haplotypes, with those from house mice. We conclude Trichuris should not be regarded as an ‘intimate’ parasite of the house mouse: while its life history might suggest intimacy, passage through alternate hosts is sufficiently common to erase signal of genetic structure associated with any particular host taxon.
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Affiliation(s)
- Wasimuddin
- Institute of Vertebrate Biology of the Czech Academy of Sciences Brno Czech Republic; Department of Botany and Zoology Faculty of Science Masaryk University Brno Czech Republic
| | - Josef Bryja
- Institute of Vertebrate Biology of the Czech Academy of Sciences Brno Czech Republic; Department of Botany and Zoology Faculty of Science Masaryk University Brno Czech Republic
| | - Alexis Ribas
- Biodiversity Research Group Faculty of Science Udon Thani Rajabhat University Udon Thani Thailand
| | - Stuart J E Baird
- Institute of Vertebrate Biology of the Czech Academy of Sciences Brno Czech Republic
| | - Jaroslav Piálek
- Institute of Vertebrate Biology of the Czech Academy of Sciences Brno Czech Republic
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16
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What can the geographic distribution of mtDNA haplotypes tell us about the invasion of New Zealand by house mice Mus musculus? Biol Invasions 2016. [DOI: 10.1007/s10530-016-1100-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Jones EP, Searle JB. Differing Y chromosome versus mitochondrial DNA ancestry, phylogeography, and introgression in the house mouse. Biol J Linn Soc Lond 2015. [DOI: 10.1111/bij.12522] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Eleanor P. Jones
- Population Biology and Conservation Biology; Evolutionary Biology Centre; University of Uppsala; Uppsala Sweden
- Food and Environment Research Agency; Sand Hutton York YO41 1LZ UK
| | - Jeremy B. Searle
- Department of Ecology and Evolutionary Biology; Cornell University; Ithaca NY 14853 USA
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18
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Goüy de Bellocq J, Baird SJE, Albrechtová J, Sobeková K, Piálek J. Murine cytomegalovirus is not restricted to the house mouse Mus musculus domesticus: prevalence and genetic diversity in the European house mouse hybrid zone. J Virol 2015; 89:406-14. [PMID: 25320317 PMCID: PMC4301121 DOI: 10.1128/jvi.02466-14] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/08/2014] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Murine cytomegalovirus (MCMV) is a betaherpesvirus of the house mouse, Mus musculus domesticus. It is a common infectious agent of wild mice and a highly studied pathogen of the laboratory mouse. Betaherpesviruses are specific to their hosts, and it is not known if other Mus taxa carry MCMV or if it is restricted to M. m. domesticus. We sampled mice over a 145-km transect of Bavaria-Bohemia crossing a hybrid zone between M. m. domesticus and Mus musculus musculus in order to investigate the occurrence of MCMV in two Mus subspecies and to test the limits of the specificity of the virus for its host. We hypothesized that if the two subspecies carry MCMV and if the virus is highly specific to its host, divergent MCMV lineages would have codiverged with their hosts and would have a geographical distribution constrained by the host genetic background. A total of 520 mice were tested by enzyme-linked immunosorbent assay (ELISA) and/or nested PCR targeting the M94 gene. Seropositive and PCR-positive individuals were found in both Mus subspecies. Seroprevalence was high, at 79.4%, but viral DNA was detected in only 41.7% of mice. Sequencing revealed 20 haplotypes clustering in 3 clades that match the host genetic structure in the hybrid zone, showing 1 and 2 MCMV lineages in M. m. domesticus and M. m. musculus, respectively. The estimated time to the most recent common ancestor (1.1 million years ago [Mya]) of the MCMVs matches that of their hosts. In conclusion, MCMV has coevolved with these hosts, suggesting that its diversity in nature may be underappreciated, since other members of the subgenus Mus likely carry different MCMVs. IMPORTANCE Murine cytomegalovirus (MCMV) is a betaherpesvirus of the house mouse, Mus musculus domesticus, an important lab model for human cytomegalovirus (HCMV) infection. The majority of lab studies are based on only two strains of MCMVs isolated from M. m. domesticus, Smith and K181, the latter derived from repeated passage of Smith in mouse submaxillary glands. The presence of MCMV in other members of the Mus subgenus had not even been investigated. By screening mouse samples collected in the European house mouse hybrid zone between M. m. domesticus and M. m. musculus, we show that MCMV is not restricted to the M. m. domesticus subspecies and that MCMVs likely codiverged with their Mus hosts. Thus, the diversity of MCMV in nature may be seriously underappreciated, since other members of the subgenus Mus likely carry their own MCMV lineages.
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Affiliation(s)
- Joëlle Goüy de Bellocq
- Research Facility Studenec, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno, Czech Republic Evolutionary Ecology Group, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Stuart J E Baird
- Research Facility Studenec, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno, Czech Republic
| | - Jana Albrechtová
- Research Facility Studenec, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno, Czech Republic
| | - Karolína Sobeková
- Research Facility Studenec, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno, Czech Republic Comenius University in Bratislava, Faculty of Natural Sciences, Department of Zoology, Bratislava, Slovakia
| | - Jaroslav Piálek
- Research Facility Studenec, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno, Czech Republic
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19
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Gabriel SI, Mathias ML, Searle JB. Of mice and the 'Age of Discovery': the complex history of colonization of the Azorean archipelago by the house mouse (Mus musculus) as revealed by mitochondrial DNA variation. J Evol Biol 2014; 28:130-45. [PMID: 25394749 DOI: 10.1111/jeb.12550] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 11/02/2014] [Accepted: 11/10/2014] [Indexed: 11/30/2022]
Abstract
Humans have introduced many species onto remote oceanic islands. The house mouse (Mus musculus) is a human commensal and has consequently been transported to oceanic islands around the globe as an accidental stowaway. The history of these introductions can tell us not only about the mice themselves but also about the people that transported them. Following a phylogeographic approach, we used mitochondrial D-loop sequence variation (within an 849- to 864-bp fragment) to study house mouse colonization of the Azores. A total of 239 sequences were obtained from all nine islands, and interpretation was helped by previously published Iberian sequences and 66 newly generated Spanish sequences. A Bayesian analysis revealed presence in the Azores of most of the D-loop clades previously described in the domesticus subspecies of the house mouse, suggesting a complex colonization history of the archipelago as a whole from multiple geographical origins, but much less heterogeneity (often single colonization?) within islands. The expected historical link with mainland Portugal was reflected in the pattern of D-loop variation of some of the islands but not all. A more unexpected association with a distant North European source area was also detected in three islands, possibly reflecting human contact with the Azores prior to the 15th century discovery by Portuguese mariners. Widening the scope to colonization of the Macaronesian islands as a whole, human linkages between the Azores, Madeira, the Canaries, Portugal and Spain were revealed through the sharing of mouse sequences between these areas. From these and other data, we suggest mouse studies may help resolve historical uncertainties relating to the 'Age of Discovery'.
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Affiliation(s)
- S I Gabriel
- CESAM - Centre for Environmental and Marine Studies, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal; Department of Biology, University of York, York, UK
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20
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Jing M, Yu HT, Bi X, Lai YC, Jiang W, Huang L. Phylogeography of Chinese house mice (Mus musculus musculus/castaneus): distribution, routes of colonization and geographic regions of hybridization. Mol Ecol 2014; 23:4387-405. [PMID: 25065953 DOI: 10.1111/mec.12873] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 07/22/2014] [Accepted: 07/23/2014] [Indexed: 11/27/2022]
Abstract
House mice (Mus musculus) are human commensals and have served as a primary model in biomedical, ecological and evolutionary research. Although there is detailed knowledge of the biogeography of house mice in Europe, little is known of the history of house mice in China, despite the fact that China encompasses an enormous portion of their range. In the present study, 535 house mice caught from 29 localities in China were studied by sequencing the mitochondrial D-loop and genotyping 10 nuclear microsatellite markers distributed on 10 chromosomes. Phylogenetic analyses revealed two evolutionary lineages corresponding to Mus musculus castaneus and Mus musculus musculus in the south and north, respectively, with the Yangtze River approximately representing the boundary. More detailed analyses combining published sequence data from mice sampled in neighbouring countries revealed the migration routes of the two subspecies into China: M. m. castaneus appeared to have migrated through a southern route (Yunnan and Guangxi), whereas M. m. musculus entered China from Kazakhstan through the north-west border (Xinjiang). Bayesian analysis of mitochondrial sequences indicated rapid population expansions in both subspecies, approximately 4650-9300 and 7150-14 300 years ago for M. m. castaneus and M. m. musculus, respectively. Interestingly, the migration routes of Chinese house mice coincide with the colonization routes of modern humans into China, and the expansion times of house mice are consistent with the development of agriculture in southern and northern China, respectively. Finally, our study confirmed the existence of a hybrid zone between M. m. castaneus and M. m. musculus in China. Further study of this hybrid zone will provide a useful counterpart to the well-studied hybrid zone between M. m. musculus and Mus musculus domesticus in central Europe.
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Affiliation(s)
- Meidong Jing
- College of Life Sciences, Ludong University, Yantai, Shandong, 264025, China
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21
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Rando JC, Pieper H, Alcover JA. Radiocarbon evidence for the presence of mice on Madeira Island (North Atlantic) one millennium ago. Proc Biol Sci 2014; 281:20133126. [PMID: 24523273 DOI: 10.1098/rspb.2013.3126] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Owing to the catastrophic extinction events that occurred following the Holocene arrival of alien species, extant oceanic island biotas are a mixture of recently incorporated alien fauna and remnants of the original fauna. Knowledge of the Late Quaternary pristine island faunas and a reliable chronology of the earliest presence of alien species on each archipelago are critical in understanding the magnitude and tempo of Quaternary island extinctions. Until now, two successive waves of human arrivals have been identified in the North Atlantic Macaronesian archipelagos (Azores, Madeira, Selvagens, Canary and Cape Verde Islands): 'aboriginal', which is limited to the Canary Islands around two millennia ago, and 'colonial', from the fourteenth century onwards. New surveys in Ponta de São Lourenço (Madeira Island) have allowed us to obtain and date ancient bones of mice. The date obtained (1033 ± 28 BP) documents the earliest evidence for the presence of mice on the island. This date extends the time frame in which the most significant ecological changes occurred on the island. It also suggests that humans could have reached Madeira before 1036 cal AD, around four centuries before Portugal officially took possession of the island.
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Affiliation(s)
- Juan Carlos Rando
- Departamento de Biología Animal (Zoología), Universidad de La Laguna Tenerife, , Canary Islands, Spain, Ulmenstrasse 21, Schwentinental 24223, Germany, Departament de Biodiversitat i Conservació, IMEDEA (CSIC-UIB), Cr Miquel Marquès 21, Esporles, Mallorca, Balearic Islands 07190, Spain, Department of Mammalogy, American Museum of Natural History, , New York, NY 10024-5192, USA
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22
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Campbell P, Nachman MW. X-y interactions underlie sperm head abnormality in hybrid male house mice. Genetics 2014; 196:1231-40. [PMID: 24504187 PMCID: PMC3982709 DOI: 10.1534/genetics.114.161703] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 01/30/2014] [Indexed: 12/23/2022] Open
Abstract
The genetic basis of hybrid male sterility in house mice is complex, highly polygenic, and strongly X linked. Previous work suggested that there might be interactions between the Mus musculus musculus X and the M. m. domesticus Y with a large negative effect on sperm head morphology in hybrid males with an F1 autosomal background. To test this, we introgressed the M. m. domesticus Y onto a M. m. musculus background and measured the change in sperm morphology, testis weight, and sperm count across early backcross generations and in 11th generation backcross males in which the opportunity for X-autosome incompatibilities is effectively eliminated. We found that abnormality in sperm morphology persists in M. m. domesticus Y introgression males, and that this phenotype is rescued by M. m. domesticus introgressions on the X chromosome. In contrast, the severe reductions in testis weight and sperm count that characterize F1 males were eliminated after one generation of backcrossing. These results indicate that X-Y incompatibilities contribute specifically to sperm morphology. In contrast, X-autosome incompatibilities contribute to low testis weight, low sperm count, and sperm morphology. Restoration of normal testis weight and sperm count in first generation backcross males suggests that a small number of complex incompatibilities between loci on the M. m. musculus X and the M. m. domesticus autosomes underlie F1 male sterility. Together, these results provide insight into the genetic architecture of F1 male sterility and help to explain genome-wide patterns of introgression across the house mouse hybrid zone.
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Affiliation(s)
- Polly Campbell
- Corresponding author: Department of Zoology, 508 Life Sciences West, Oklahoma State University, Stillwater, OK 74078. E-mail:
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23
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The genetic architecture of chemosensory cues involved in species recognition: a behavioral approach in the house mouse. Behav Genet 2013; 44:56-67. [PMID: 24158628 DOI: 10.1007/s10519-013-9621-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Accepted: 10/08/2013] [Indexed: 01/10/2023]
Abstract
The genetics of chemical signals is poorly understood. We addressed this issue in two subspecies of mice, Mus musculus musculus and M. m. domesticus, comparing their odor phenotypes with that of their hybrids. Earlier studies indicated that these subspecies could be discriminated on the basis of their urinary odor. We assessed male odor phenotypes from perception of musculus mice acting as olfactometers. Our results point to a complex genetic determinism. Reciprocal F1 hybrids produced a distinct odor phenotype, with shared characteristics distinguishing them from their parents, and stronger similarity to domesticus than to musculus. These results are consistent with implications of genes with partial dominance and a parent of origin effect. Further, similarities between reciprocal F2 allowed us to reject a direct role of the Y-chromosome in shaping the odor phenotype. However we show that the X-chromosome could be involved in explaining domesticus phenotype, while epistasis between genes on the sex chromosomes and the autosomes might influence musculus phenotype.
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24
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Suzuki H, Nunome M, Kinoshita G, Aplin KP, Vogel P, Kryukov AP, Jin ML, Han SH, Maryanto I, Tsuchiya K, Ikeda H, Shiroishi T, Yonekawa H, Moriwaki K. Evolutionary and dispersal history of Eurasian house mice Mus musculus clarified by more extensive geographic sampling of mitochondrial DNA. Heredity (Edinb) 2013; 111:375-90. [PMID: 23820581 DOI: 10.1038/hdy.2013.60] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 02/21/2013] [Accepted: 04/24/2013] [Indexed: 11/09/2022] Open
Abstract
We examined the sequence variation of mitochondrial DNA control region and cytochrome b gene of the house mouse (Mus musculus sensu lato) drawn from ca. 200 localities, with 286 new samples drawn primarily from previously unsampled portions of their Eurasian distribution and with the objective of further clarifying evolutionary episodes of this species before and after the onset of human-mediated long-distance dispersals. Phylogenetic analysis of the expanded data detected five equally distinct clades, with geographic ranges of northern Eurasia (musculus, MUS), India and Southeast Asia (castaneus, CAS), Nepal (unspecified, NEP), western Europe (domesticus, DOM) and Yemen (gentilulus). Our results confirm previous suggestions of Southwestern Asia as the likely place of origin of M. musculus and the region of Iran, Afghanistan, Pakistan, and northern India, specifically as the ancestral homeland of CAS. The divergence of the subspecies lineages and of internal sublineage differentiation within CAS were estimated to be 0.37-0.47 and 0.14-0.23 million years ago (mya), respectively, assuming a split of M. musculus and Mus spretus at 1.7 mya. Of the four CAS sublineages detected, only one extends to eastern parts of India, Southeast Asia, Indonesia, Philippines, South China, Northeast China, Primorye, Sakhalin and Japan, implying a dramatic range expansion of CAS out of its homeland during an evolutionary short time, perhaps associated with the spread of agricultural practices. Multiple and non-coincident eastward dispersal events of MUS sublineages to distant geographic areas, such as northern China, Russia and Korea, are inferred, with the possibility of several different routes.
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Affiliation(s)
- H Suzuki
- Laboratory of Ecology and Genetics, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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25
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Gabriel SI, Mathias MDL, Searle JB. Genetic structure of house mouse (Mus musculusLinnaeus 1758) populations in the Atlantic archipelago of the Azores: colonization and dispersal. Biol J Linn Soc Lond 2013. [DOI: 10.1111/bij.12015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Maria Da Luz Mathias
- Departamento de Biologia Animal; Faculdade de Ciências da Universidade de Lisboa; CESAM - Centre for Environmental and Marine Studies; 1749-016; Lisbon; Portugal
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26
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Sex-specific clines support incipient speciation in a common European mammal. Heredity (Edinb) 2013; 110:398-404. [PMID: 23340600 DOI: 10.1038/hdy.2012.124] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Hybrid zones provide excellent opportunities to study processes and mechanisms underlying reproductive isolation and speciation. Here we investigated sex-specific clines of molecular markers in hybrid zones of morphologically cryptic yet genetically highly-diverged evolutionary lineages of the European common vole (Microtus arvalis). We analyzed the position and width of four secondary contact zones along three independent transects in the region of the Alps using maternally (mitochondrial DNA) and paternally (Y-chromosome) inherited genetic markers. Given male-biased dispersal in the common vole, a selectively neutral secondary contact would show broader paternal marker clines than maternal ones. In a selective case, for example, involving a form of Haldane's rule, Y-chromosomal clines would not be expected to be broader than maternal markers because they are transmitted by the heterogametic sex and thus gene flow would be restricted. Consistent with the selective case, paternal clines were significantly narrower or at most equal in width to maternal clines in all contact zones. In addition, analyses using maximum likelihood cline-fitting detected a shift of paternal relative to maternal clines in three of four contact zones. These patterns suggest that processes at the contact zones in the common vole are not selectively neutral, and that partial reproductive isolation is already established between these evolutionary lineages. We conclude that hybrid zone movement, sexual selection and/or genetic incompatibilities are likely associated with an unusual unidirectional manifestation of Haldane's rule in this common European mammal.
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Cucchi T, Kovács ZE, Berthon R, Orth A, Bonhomme F, Evin A, Siahsarvie R, Darvish J, Bakhshaliyev V, Marro C. On the trail of Neolithic mice and men towards Transcaucasia: zooarchaeological clues from Nakhchivan (Azerbaijan). Biol J Linn Soc Lond 2013. [DOI: 10.1111/bij.12004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Zsófia Eszter Kovács
- Hungarian National Museum; National Heritage Protection Centre; Budapest; Hungary
| | | | - Annie Orth
- CNRS UMR5554; Institut des Sciences de l'Evolution; Université Montpellier 2; Montpellier; France
| | - François Bonhomme
- CNRS UMR5554; Institut des Sciences de l'Evolution; Université Montpellier 2; Montpellier; France
| | - Allowen Evin
- Archaeology Department; University of Aberdeen; Elphinstone Road, Aberdeen, AB24 3UF; Scotland; UK
| | | | | | - Veli Bakhshaliyev
- Department of Archaeology; National Academy of Science of Azerbaijan; Nakhchivan; Azerbaijan
| | - Catherine Marro
- UMR 5133, Archéorient, Environnements et Sociétés de l'Orient Ancien; Maison de l'Orient et de la Méditerranée; CNRS, Université Lyon 2; Lyon; France
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28
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Jones EP, Eager HM, Gabriel SI, Jóhannesdóttir F, Searle JB. Genetic tracking of mice and other bioproxies to infer human history. Trends Genet 2013; 29:298-308. [PMID: 23290437 DOI: 10.1016/j.tig.2012.11.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 11/13/2012] [Accepted: 11/29/2012] [Indexed: 10/27/2022]
Abstract
The long-distance movements made by humans through history are quickly erased by time but can be reconstructed by studying the genetic make-up of organisms that travelled with them. The phylogeography of the western house mouse (Mus musculus domesticus), whose current widespread distribution around the world has been caused directly by the movements of (primarily) European people, has proved particularly informative in a series of recent studies. The geographic distributions of genetic lineages in this commensal have been linked to the Iron Age movements within the Mediterranean region and Western Europe, the extensive maritime activities of the Vikings in the 9th to 11th centuries, and the colonisation of distant landmasses and islands by the Western European nations starting in the 15th century. We review here recent insights into human history based on phylogeographic studies of mice and other species that have travelled with humans, and discuss how emerging genomic methodologies will increase the precision of these inferences.
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Affiliation(s)
- Eleanor P Jones
- Mammal Research Institute, Polish Academy of Sciences, 17-230 Białowieża, Poland
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29
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Albrechtová J, Albrecht T, Baird SJE, Macholán M, Rudolfsen G, Munclinger P, Tucker PK, Piálek J. Sperm-related phenotypes implicated in both maintenance and breakdown of a natural species barrier in the house mouse. Proc Biol Sci 2012; 279:4803-10. [PMID: 23055063 PMCID: PMC3497091 DOI: 10.1098/rspb.2012.1802] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 09/19/2012] [Indexed: 11/12/2022] Open
Abstract
The house mouse hybrid zone (HMHZ) is a species barrier thought to be maintained by a balance between dispersal and natural selection against hybrids. While the HMHZ is characterized by frequency discontinuities for some sex chromosome markers, there is an unexpected large-scale regional introgression of a Y chromosome across the barrier, in defiance of Haldane's rule. Recent work suggests that a major force maintaining the species barrier acts through sperm traits. Here, we test whether the Y chromosome penetration of the species barrier acts through sperm traits by assessing sperm characteristics of wild-caught males directly in a field laboratory set up in a Y introgression region of the HMHZ, later calculating the hybrid index of each male using 1401 diagnostic single nucleotide polymorphisms (SNPs). We found that both sperm count (SC) and sperm velocity were significantly reduced across the natural spectrum of hybrids. However, SC was more than rescued in the presence of the invading Y. Our results imply an asymmetric advantage for Y chromosome introgression consistent with the observed large-scale introgression. We suggest that selection on sperm-related traits probably explains a large component of patterns observed in the natural hybrid zone, including the Y chromosome penetration.
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Affiliation(s)
- Jana Albrechtová
- Department of Population Biology, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno and Studenec, Czech Republic
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Tomáš Albrecht
- Department of Population Biology, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno and Studenec, Czech Republic
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | | | - Miloš Macholán
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, ASCR, Brno, Czech Republic
| | - Geir Rudolfsen
- Department for Environmental Radioactivity, Norwegian Radiation Protection Authority, Framcenter, Tromsø, Norway
| | - Pavel Munclinger
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Priscilla K. Tucker
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI, USA
| | - Jaroslav Piálek
- Department of Population Biology, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno and Studenec, Czech Republic
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30
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Hiadlovská Z, Vošlajerová Bímová B, Mikula O, Piálek J, Macholán M. Transgressive segregation in a behavioural trait? Explorative strategies in two house mouse subspecies and their hybrids. Biol J Linn Soc Lond 2012. [DOI: 10.1111/j.1095-8312.2012.01997.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Jaroslav Piálek
- Institute of Vertebrate Biology; Academy of Sciences of the Czech Republic; Brno; Czech Republic
| | - Miloš Macholán
- Laboratory of Mammalian Evolutionary Genetics; Institute of Animal Physiology and Genetics; Academy of Sciences of the Czech Republic; Brno; Czech Republic
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31
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Ďureje Ľ, Macholán M, Baird SJE, Piálek J. The mouse hybrid zone in Central Europe: from morphology to molecules. FOLIA ZOOLOGICA 2012. [DOI: 10.25225/fozo.v61.i3.a13.2012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ľudovít Ďureje
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Květná 8, 603 65 Brno, Czech Republic
| | - Miloš Macholán
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, v.v.i., Veveří 97, 602 00 Brno, Czech Republic
| | - Stuart J. E. Baird
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Květná 8, 603 65 Brno, Czech Republic
- CIBIO, University of Porto, Campus Agrário de Vairão, Vairão, Portugal
| | - Jaroslav Piálek
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Květná 8, 603 65 Brno, Czech Republic
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32
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Conroy CJ, Rowe KC, Rowe KMC, Kamath PL, Aplin KP, Hui L, James DK, Moritz C, Patton JL. Cryptic genetic diversity in Rattus of the San Francisco Bay region, California. Biol Invasions 2012. [DOI: 10.1007/s10530-012-0323-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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33
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Multiple origins of the western European house mouse in the Aeolian Archipelago: clues from mtDNA and chromosomes. Biol Invasions 2012. [DOI: 10.1007/s10530-012-0322-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Janoušek V, Wang L, Luzynski K, Dufková P, Vyskočilová MM, Nachman MW, Munclinger P, Macholán M, Piálek J, Tucker PK. Genome-wide architecture of reproductive isolation in a naturally occurring hybrid zone between Mus musculus musculus and M. m. domesticus. Mol Ecol 2012; 21:3032-47. [PMID: 22582810 PMCID: PMC3872452 DOI: 10.1111/j.1365-294x.2012.05583.x] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Studies of a hybrid zone between two house mouse subspecies (Mus musculus musculus and M. m. domesticus) along with studies using laboratory crosses reveal a large role for the X chromosome and multiple autosomal regions in reproductive isolation as a consequence of disrupted epistasis in hybrids. One limitation of previous work has been that most of the identified genomic regions have been large. The goal here is to detect and characterize precise genomic regions underlying reproductive isolation. We surveyed 1401 markers evenly spaced across the genome in 679 mice collected from two different transects. Comparisons between transects provide a means for identifying common patterns that likely reflect intrinsic incompatibilities. We used a genomic cline approach to identify patterns that correspond to epistasis. From both transects, we identified contiguous regions on the X chromosome in which markers were inferred to be involved in epistatic interactions. We then searched for autosomal regions showing the same patterns and found they constitute about 5% of autosomal markers. We discovered substantial overlap between these candidate regions underlying reproductive isolation and QTL for hybrid sterility identified in laboratory crosses. Analysis of gene content in these regions suggests a key role for several mechanisms, including the regulation of transcription, sexual conflict and sexual selection operating at both the postmating prezygotic and postzygotic stages of reproductive isolation. Taken together, these results indicate that speciation in two recently diverged (c. 0.5 Ma) house mouse subspecies is complex, involving many genes dispersed throughout the genome and associated with distinct functions.
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Affiliation(s)
- Václav Janoušek
- Department of Zoology, Faculty of Science, Charles University in Prague, Viničná 7, 128 43 Prague 2, Czech Republic
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35
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Baird SJE, Ribas A, Macholán M, Albrecht T, Piálek J, Goüy de Bellocq J. Where are the wormy mice? A reexamination of hybrid parasitism in the European house mouse hybrid zone. Evolution 2012; 66:2757-72. [PMID: 22946801 DOI: 10.1111/j.1558-5646.2012.01633.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Wormy mice in a hybrid zone have been interpreted as evidence of low hybrid fitness, such that parasites contribute to species separation. However, because of its natural heterogeneity, observations of parasite load must be numerous with good field area coverage. We sampled 689 mice from 107 localities across the Bavaria-Bohemia region of the European house mouse hybrid zone and calculated their hybrid indices using 1401 diagnostic single nucleotide polymorphisms (SNPs). We tested whether hybrids have greater or lesser diversity and load of parasite helminths than additive expectations, performing load analyses on the four most common taxa. We found hybrids have significantly reduced diversity and load of each of the commonest helminths; rarer helminths further support reduced load. Although within-locality comparisons have little power, randomization tests show the repeated pattern is unlikely to be due to local parasite heterogeneity, and simulations show a patch of low parasite diversity is unlikely to fall by chance just so in the field area, such that it produces the observed effects. Our data therefore contradict the idea that helminths reduce hybrid fitness through increased load. We discuss a vicariant Red Queen model that implies immune genes tracking parasites will escape Dobzhansky-Muller incompatibilities, generating hybrid variants untargeted by parasites.
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Affiliation(s)
- Stuart J E Baird
- Department of Population Biology, Institute of Vertebrate Biology, ASCR, Brno and Studenec, Czech Republic CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, Vairão, Portugal
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36
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Jones EP, Skirnisson K, McGovern TH, Gilbert MTP, Willerslev E, Searle JB. Fellow travellers: a concordance of colonization patterns between mice and men in the North Atlantic region. BMC Evol Biol 2012; 12:35. [PMID: 22429664 PMCID: PMC3315747 DOI: 10.1186/1471-2148-12-35] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 03/19/2012] [Indexed: 11/15/2022] Open
Abstract
Background House mice (Mus musculus) are commensals of humans and therefore their phylogeography can reflect human colonization and settlement patterns. Previous studies have linked the distribution of house mouse mitochondrial (mt) DNA clades to areas formerly occupied by the Norwegian Vikings in Norway and the British Isles. Norwegian Viking activity also extended further westwards in the North Atlantic with the settlement of Iceland, short-lived colonies in Greenland and a fleeting colony in Newfoundland in 1000 AD. Here we investigate whether house mouse mtDNA sequences reflect human history in these other regions as well. Results House mice samples from Iceland, whether from archaeological Viking Age material or from modern-day specimens, had an identical mtDNA haplotype to the clade previously linked with Norwegian Vikings. From mtDNA and microsatellite data, the modern-day Icelandic mice also share the low genetic diversity shown by their human hosts on Iceland. Viking Age mice from Greenland had an mtDNA haplotype deriving from the Icelandic haplotype, but the modern-day Greenlandic mice belong to an entirely different mtDNA clade. We found no genetic association between modern Newfoundland mice and the Icelandic/ancient Greenlandic mice (no ancient Newfoundland mice were available). The modern day Icelandic and Newfoundland mice belong to the subspecies M. m. domesticus, the Greenlandic mice to M. m. musculus. Conclusions In the North Atlantic region, human settlement history over a thousand years is reflected remarkably by the mtDNA phylogeny of house mice. In Iceland, the mtDNA data show the arrival and continuity of the house mouse population to the present day, while in Greenland the data suggest the arrival, subsequent extinction and recolonization of house mice - in both places mirroring the history of the European human host populations. If house mice arrived in Newfoundland with the Viking settlers at all, then, like the humans, their presence was also fleeting and left no genetic trace. The continuity of mtDNA haplotype in Iceland over 1000 years illustrates that mtDNA can retain the signature of the ancestral house mouse founders. We also show that, in terms of genetic variability, house mouse populations may also track their host human populations.
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Affiliation(s)
- E P Jones
- Department of Biology, University of York, PO Box 373, York YO10 5YW, UK.
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37
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Gabriel SI, Stevens MI, Mathias MDL, Searle JB. Of mice and 'convicts': origin of the Australian house mouse, Mus musculus. PLoS One 2011; 6:e28622. [PMID: 22174847 PMCID: PMC3236204 DOI: 10.1371/journal.pone.0028622] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 11/11/2011] [Indexed: 11/18/2022] Open
Abstract
The house mouse, Mus musculus, is one of the most ubiquitous invasive species worldwide and in Australia is particularly common and widespread, but where it originally came from is still unknown. Here we investigated this origin through a phylogeographic analysis of mitochondrial DNA sequences (D-loop) comparing mouse populations from Australia with those from the likely regional source area in Western Europe. Our results agree with human historical associations, showing a strong link between Australia and the British Isles. This outcome is of intrinsic and applied interest and helps to validate the colonization history of mice as a proxy for human settlement history.
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Affiliation(s)
- Sofia I. Gabriel
- Department of Biology, University of York, York, United Kingdom
- CESAM–Centre for Environmental and Marine Studies, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Mark I. Stevens
- South Australian Museum, and School of Earth and Environmental Sciences, University of Adelaide, Adelaide, Australia
| | - Maria da Luz Mathias
- CESAM–Centre for Environmental and Marine Studies, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Jeremy B. Searle
- Department of Biology, University of York, York, United Kingdom
- Department of Ecology and Evolutionary Biology, Cornell University, Corson Hall, Ithaca, New York, United States of America
- * E-mail:
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38
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Boysen P, Eide DM, Storset AK. Natural killer cells in free-living Mus musculus have a primed phenotype. Mol Ecol 2011; 20:5103-10. [PMID: 21895821 DOI: 10.1111/j.1365-294x.2011.05269.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Recent reports have shown that natural killer (NK) cells may be long-lived, possess memory-like features and may need microbial priming to become fully reactive. Thus, the notion that these cells are typically innate, nonadaptive lymphocytes has been challenged. If microbial priming is essential for functional maturity, it is necessary to raise the question whether NK cells of laboratory mice, kept under strict hygienic conditions, represent these cells adequately. In their natural habitat, mice will encounter microbes to a greater extent, and we here investigated whether NK cells of feral mice showed signs of being primed. In comparison with C57BL/6 mice raised under specific pathogen-free conditions, NK cells from feral mice had high expression of CD69, KLRG1, granzyme B and NKp46 and a higher proportion of CD27+ cells, mostly CD11b-, as well as a higher presence in peripheral lymph nodes. Following cytokine stimulation, feral mouse NK cells had quickly inducible CD25 expression and a stronger interferon-gamma response. These findings indicate a high degree of pre-activation of NK cells of free-living mice, indicating a strong environmental impact on NK cells, which may be highly relevant for interpretation of studies in the mouse model.
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Affiliation(s)
- Preben Boysen
- Department of Food Safety and Infection Biology, Norwegian School of Veterinary Science, P.O. Box 8146 Dep., N-0033 Oslo, Norway.
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39
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Wang L, Luzynski K, Pool JE, Janoušek V, Dufková P, Vyskočilová MM, Teeter KC, Nachman MW, Munclinger P, Macholán M, Piálek J, Tucker PK. Measures of linkage disequilibrium among neighbouring SNPs indicate asymmetries across the house mouse hybrid zone. Mol Ecol 2011; 20:2985-3000. [PMID: 21668551 DOI: 10.1111/j.1365-294x.2011.05148.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Theory predicts that naturally occurring hybrid zones between genetically distinct taxa can move over space and time as a result of selection and/or demographic processes, with certain types of hybrid zones being more or less likely to move. Determining whether a hybrid zone is stationary or moving has important implications for understanding evolutionary processes affecting interactions in hybrid populations. However, direct observations of hybrid zone movement are difficult to make unless the zone is moving rapidly. Here, evidence for movement in the house mouse Mus musculus domesticus × Mus musculus musculus hybrid zone is provided using measures of LD and haplotype structure among neighbouring SNP markers from across the genome. Local populations of mice across two transects in Germany and the Czech Republic were sampled, and a total of 1301 mice were genotyped at 1401 markers from the nuclear genome. Empirical measures of LD provide evidence for extinction and (re)colonization in single populations and, together with simulations, suggest hybrid zone movement because of either geography-dependent asymmetrical dispersal or selection favouring one subspecies over the other.
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Affiliation(s)
- Liuyang Wang
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor MI 48109, USA
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JONES ELEANORP, JENSEN JENSKJELD, MAGNUSSEN EYĐFINN, GREGERSEN NOOMI, HANSEN HEIDIS, SEARLE JEREMYB. A molecular characterization of the charismatic Faroe house mouse. Biol J Linn Soc Lond 2011. [DOI: 10.1111/j.1095-8312.2010.01597.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Gabriel SI, Jóhannesdóttir F, Jones EP, Searle JB. Colonization, mouse-style. BMC Biol 2010; 8:131. [PMID: 20977781 PMCID: PMC2964602 DOI: 10.1186/1741-7007-8-131] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 10/21/2010] [Indexed: 11/16/2022] Open
Abstract
Several recent papers, including one in BMC Evolutionary Biology, examine the colonization history of house mice. As well as background for the analysis of mouse adaptation, such studies offer a perspective on the history of movements of the humans that accidentally transported the mice. See research article: http://www.biomedcentral.com/1471-2148/10/325
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Affiliation(s)
- Sofia I Gabriel
- CESAM - Centre for Environmental and Marine Studies, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal
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