A rapid rate of sex-chromosome turnover and non-random transitions in true frogs

Daniel L. Jeffries (), Guillaume Lavanchy, Roberto Sermier, Michael J. Sredl, Ikuo Miura, Amaël Borzée, Lisa N. Barrow, Daniele Canestrelli, Pierre-André Crochet, Christophe Dufresnes, Jinzhong Fu, Wen-Juan Ma, Constantino Macías Garcia, Karim Ghali, Alfredo G. Nicieza, Ryan P. O’Donnell, Nicolas Rodrigues, Antonio Romano, Íñigo Martínez-Solano, Ilona Stepanyan, Silvia Zumbach, Alan Brelsford and Nicolas Perrin
Additional contact information
Daniel L. Jeffries: University of Lausanne
Guillaume Lavanchy: University of Lausanne
Roberto Sermier: University of Lausanne
Michael J. Sredl: 5000 W. Carefree Highway
Ikuo Miura: Amphibian Research Center, Hiroshima University
Amaël Borzée: Ewha Womans University
Lisa N. Barrow: Museum of Southwestern Biology, MSC03 2020, 1 University of New Mexico
Daniele Canestrelli: University of Tuscia
Pierre-André Crochet: CEFE, CNRS, University Montpellier, University Paul Valéry Montpellier 3, EPHE, IRD
Christophe Dufresnes: University of Lausanne
Jinzhong Fu: University of Guelph
Wen-Juan Ma: University of Lausanne
Constantino Macías Garcia: Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City
Karim Ghali: University of Lausanne
Alfredo G. Nicieza: UO-CSIC-PA
Ryan P. O’Donnell: 5000 W. Carefree Highway
Nicolas Rodrigues: University of Lausanne
Antonio Romano: Consiglio Nazionale delle Ricerche, Istituto per i sistemi agricoli e forestali del mediterraneo, Via Patacca 84
Íñigo Martínez-Solano: Museo Nacional de Ciencias Naturales, CSIC
Ilona Stepanyan: Scientific Center of Zoology and Hydroecology, National Academy of Science, Republic of Armenia
Silvia Zumbach: Info Fauna - karch, UniMail, Bellevaux 51
Alan Brelsford: University of California Riverside
Nicolas Perrin: University of Lausanne

Nature Communications, 2018, vol. 9, issue 1, 1-11

Abstract: Abstract The canonical model of sex-chromosome evolution predicts that, as recombination is suppressed along sex chromosomes, gametologs will progressively differentiate, eventually becoming heteromorphic. However, there are numerous examples of homomorphic sex chromosomes across the tree of life. This homomorphy has been suggested to result from frequent sex-chromosome turnovers, yet we know little about which forces drive them. Here, we describe an extremely fast rate of turnover among 28 species of Ranidae. Transitions are not random, but converge on several chromosomes, potentially due to genes they harbour. Transitions also preserve the ancestral pattern of male heterogamety, in line with the ‘hot-potato’ model of sex-chromosome transitions, suggesting a key role for mutation-load accumulation in non-recombining genomic regions. The importance of mutation-load selection in frogs might result from the extreme heterochiasmy they exhibit, making frog sex chromosomes differentiate immediately from emergence and across their entire length.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06517-2

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DOI: 10.1038/s41467-018-06517-2

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