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Comprehensive cytogenetic analysis of the most chromosomally variable mammalian genus from South America: Ctenomys (Rodentia: Caviomorpha: Ctenomyidae). Mamm Biol 2022. [DOI: 10.1007/s42991-022-00312-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Potter S, Bragg JG, Turakulov R, Eldridge MDB, Deakin J, Kirkpatrick M, Edwards RJ, Moritz C. Limited introgression between rock-wallabies with extensive chromosomal rearrangements. Mol Biol Evol 2021; 39:6448774. [PMID: 34865126 PMCID: PMC8788226 DOI: 10.1093/molbev/msab333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Chromosome rearrangements can result in the rapid evolution of hybrid incompatibilities. Robertsonian fusions, particularly those with monobrachial homology, can drive reproductive isolation amongst recently diverged taxa. The recent radiation of rock-wallabies (genus Petrogale) is an important model to explore the role of Robertsonian fusions in speciation. Here, we pursue that goal using an extensive sampling of populations and genomes of Petrogale from north-eastern Australia. In contrast to previous assessments using mitochondrial DNA or nuclear microsatellite loci, genomic data are able to separate the most closely related species and to resolve their divergence histories. Both phylogenetic and population genetic analyses indicate introgression between two species that differ by a single Robertsonian fusion. Based on the available data, there is also evidence for introgression between two species which share complex chromosomal rearrangements. However, the remaining results show no consistent signature of introgression amongst species pairs and where evident, indicate generally low introgression overall. X-linked loci have elevated divergence compared with autosomal loci indicating a potential role for genic evolution to produce reproductive isolation in concert with chromosome change. Our results highlight the value of genome scale data in evaluating the role of Robertsonian fusions and structural variation in divergence, speciation, and patterns of molecular evolution.
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Affiliation(s)
- Sally Potter
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Acton, ACT, Australia.,Australian Museum Research Institute, Australian Museum, Sydney, NSW, Australia
| | - Jason G Bragg
- National Herbarium of New South Wales, The Royal Botanical Gardens and Domain Trust, Sydney, NSW, Australia
| | - Rustamzhon Turakulov
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Acton, ACT, Australia
| | - Mark D B Eldridge
- Australian Museum Research Institute, Australian Museum, Sydney, NSW, Australia
| | - Janine Deakin
- Institute for Applied Ecology, University of Canberra, Bruce, ACT, Australia
| | - Mark Kirkpatrick
- Department of Integrative Biology, University of Texas, Austin, TX, United States of America
| | - Richard J Edwards
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Craig Moritz
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Acton, ACT, Australia
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Chevret P, Hautier L, Ganem G, Herman J, Agret S, Auffray JC, Renaud S. Genetic structure in Orkney island mice: isolation promotes morphological diversification. Heredity (Edinb) 2020; 126:266-278. [PMID: 32980864 DOI: 10.1038/s41437-020-00368-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/04/2020] [Accepted: 09/04/2020] [Indexed: 11/09/2022] Open
Abstract
Following human occupation, the house mouse has colonised numerous islands, exposing the species to a wide variety of environments. Such a colonisation process, involving successive founder events and bottlenecks, may either promote random evolution or facilitate adaptation, making the relative importance of adaptive and stochastic processes in insular evolution difficult to assess. Here, we jointly analyse genetic and morphometric variation in the house mice (Mus musculus domesticus) from the Orkney archipelago. Genetic analyses, based on mitochondrial DNA and microsatellites, revealed considerable genetic structure within the archipelago, suggestive of a high degree of isolation and long-lasting stability of the insular populations. Morphometric analyses, based on a quantification of the shape of the first upper molar, revealed considerable differentiation compared to Western European populations, and significant geographic structure in Orkney, largely congruent with the pattern of genetic divergence. Morphological diversification in Orkney followed a Brownian motion model of evolution, suggesting a primary role for random drift over adaptation to local environments. Substantial structuring of human populations in Orkney has recently been demonstrated, mirroring the situation found here in house mice. This synanthropic species may thus constitute a bioproxy of human structure and practices even at a very local scale.
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Affiliation(s)
- Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558 CNRS Université Lyon 1, Université de Lyon, Campus de la Doua, 69100, Villeurbanne, France.
| | - Lionel Hautier
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Guila Ganem
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Jeremy Herman
- Department of Natural Sciences, National Museums Scotland, Chambers Street, Edinburgh, EH1 1JF, UK
| | - Sylvie Agret
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Jean-Christophe Auffray
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558 CNRS Université Lyon 1, Université de Lyon, Campus de la Doua, 69100, Villeurbanne, France
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Hora KH, Marec F, Roessingh P, Menken SBJ. Limited intrinsic postzygotic reproductive isolation despite chromosomal rearrangements between closely related sympatric species of small ermine moths (Lepidoptera: Yponomeutidae). Biol J Linn Soc Lond 2019. [DOI: 10.1093/biolinnean/blz090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Abstract
In evolutionarily young species and sympatric host races of phytophagous insects, postzygotic incompatibility is often not yet fully developed, but reduced fitness of hybrids is thought to facilitate further divergence. However, empirical evidence supporting this hypothesis is limited. To assess the role of reduced hybrid fitness, we studied meiosis and fertility in hybrids of two closely related small ermine moths, Yponomeuta padella and Yponomeuta cagnagella, and determined the extent of intrinsic postzygotic reproductive isolation. We found extensive rearrangements between the karyotypes of the two species and irregularities in meiotic chromosome pairing in their hybrids. The fertility of reciprocal F1 and, surprisingly, also of backcrosses with both parental species was not significantly decreased compared with intraspecific offspring. The results indicate that intrinsic postzygotic reproductive isolation between these closely related species is limited. We conclude that the observed chromosomal rearrangements are probably not the result of an accumulation of postzygotic incompatibilities preventing hybridization. Alternative explanations, such as adaptation to new host plants, are discussed.
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Affiliation(s)
- Katerina H Hora
- Institute for Biodiversity and Ecosystem Dynamics, Faculty of Science, University of Amsterdam, Amsterdam, The Netherlands
| | - František Marec
- Biology Centre of the Czech Academy of Sciences, Institute of Entomology, České Budějovice, Czech Republic
| | - Peter Roessingh
- Institute for Biodiversity and Ecosystem Dynamics, Faculty of Science, University of Amsterdam, Amsterdam, The Netherlands
| | - Steph B J Menken
- Institute for Biodiversity and Ecosystem Dynamics, Faculty of Science, University of Amsterdam, Amsterdam, The Netherlands
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Stapley J, Feulner PGD, Johnston SE, Santure AW, Smadja CM. Variation in recombination frequency and distribution across eukaryotes: patterns and processes. Philos Trans R Soc Lond B Biol Sci 2018; 372:rstb.2016.0455. [PMID: 29109219 PMCID: PMC5698618 DOI: 10.1098/rstb.2016.0455] [Citation(s) in RCA: 212] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2017] [Indexed: 01/04/2023] Open
Abstract
Recombination, the exchange of DNA between maternal and paternal chromosomes during meiosis, is an essential feature of sexual reproduction in nearly all multicellular organisms. While the role of recombination in the evolution of sex has received theoretical and empirical attention, less is known about how recombination rate itself evolves and what influence this has on evolutionary processes within sexually reproducing organisms. Here, we explore the patterns of, and processes governing recombination in eukaryotes. We summarize patterns of variation, integrating current knowledge with an analysis of linkage map data in 353 organisms. We then discuss proximate and ultimate processes governing recombination rate variation and consider how these influence evolutionary processes. Genome-wide recombination rates (cM/Mb) can vary more than tenfold across eukaryotes, and there is large variation in the distribution of recombination events across closely related taxa, populations and individuals. We discuss how variation in rate and distribution relates to genome architecture, genetic and epigenetic mechanisms, sex, environmental perturbations and variable selective pressures. There has been great progress in determining the molecular mechanisms governing recombination, and with the continued development of new modelling and empirical approaches, there is now also great opportunity to further our understanding of how and why recombination rate varies.This article is part of the themed issue 'Evolutionary causes and consequences of recombination rate variation in sexual organisms'.
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Affiliation(s)
- Jessica Stapley
- Centre for Adaptation to a Changing Environment, IBZ, ETH Zürich, 8092 Zürich, Switzerland
| | - Philine G D Feulner
- Department of Fish Ecology and Evolution, Centre of Ecology, Evolution and Biogeochemistry, EAWAG Swiss Federal Institute of Aquatic Science and Technology, 6047 Kastanienbaum, Switzerland.,Division of Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, 3012 Bern, Switzerland
| | - Susan E Johnston
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3JY, UK
| | - Anna W Santure
- School of Biological Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Carole M Smadja
- Institut des Sciences de l'Evolution UMR 5554, CNRS, IRD, EPHE, Université de Montpellier, 3095 Montpellier cedex 05, France
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Matveevsky S, Kolomiets O, Bogdanov A, Hakhverdyan M, Bakloushinskaya I. Chromosomal Evolution in Mole Voles Ellobius (Cricetidae, Rodentia): Bizarre Sex Chromosomes, Variable Autosomes and Meiosis. Genes (Basel) 2017; 8:E306. [PMID: 29099806 PMCID: PMC5704219 DOI: 10.3390/genes8110306] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 11/16/2022] Open
Abstract
This study reports on extensive experimental material covering more than 30 years of studying the genetics of mole voles. Sex chromosomes of Ellobius demonstrate an extraordinary case of mammalian sex chromosomes evolution. Five species of mole voles own three types of sex chromosomes; typical for placentals: XY♂/XX♀; and atypical X0♂/X0♀; or XX♂/XX♀. Mechanisms of sex determination in all Ellobius species remain enigmatic. It was supposed that the Y chromosome was lost twice and independently in subgenera Bramus and Ellobius. Previous to the Y being lost, the X chromosome in distinct species obtained some parts of the Y chromosome, with or without Sry, and accumulated one or several copies of the Eif2s3y gene. Along with enormous variations of sex chromosomes, genes of sex determination pathway and autosomes, and five mole vole species demonstrate ability to establish different meiotic mechanisms, which stabilize their genetic systems and make it possible to overcome the evolutionary deadlocks.
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Affiliation(s)
- Sergey Matveevsky
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Oxana Kolomiets
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Alexey Bogdanov
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow 119334, Russia.
| | | | - Irina Bakloushinskaya
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow 119334, Russia.
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