The rise and fall of the ancient northern pike master sex-determining gene

Qiaowei Pan, Romain Feron, Elodie Jouanno, Hugo Darras, Amaury Herpin, Ben Koop, Eric Rondeau, Frederick W Goetz, Wesley A Larson, Louis Bernatchez, Mike Tringali, Stephen S Curran, Eric Saillant, Gael PJ Denys, Frank A von Hippel, Songlin Chen, J Andrés López, Hugo Verreycken, Konrad Ocalewicz, Rene GuyomardCamille Eche, Jerome Lluch, Celine Roques, Hongxia Hu, Roger Tabor, Patrick DeHaan, Krista M Nichols, Laurent Journot, Hugues Parrinello, Christophe Klopp, Elena A Interesova, Vladimir Trifonov, Manfred Schartl, John Postlethwait, Yann Guiguen, Molly Przeworski, Detlef Weigel

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The understanding of the evolution of variable sex determination mechanisms across taxa requires comparative studies among closely related species. Following the fate of a known master sex-determining gene, we traced the evolution of sex determination in an entire teleost order (Esociformes). We discovered that the northern pike (Esox lucius) master sex-determining gene originated from a 65 to 90 million-year-old gene duplication event and that it remained sex linked on undifferentiated sex chromosomes for at least 56 million years in multiple species. We identified several independent species- or population-specific sex determination transitions, including a recent loss of a Y chromosome. These findings highlight the diversity of evolutionary fates of master sex-determining genes and the importance of population demographic history in sex determination studies. We hypothesize that occasional sex reversals and genetic bottlenecks provide a non-adaptive explanation for sex determination transitions.
TaalEngels
Volume10
Pagina's (van-tot)e62858
ISSN2050-084X
DOI's
StatusGepubliceerd - 28-jan-2021

Thematische Lijst 2020

  • Water
  • Andere

Thematische lijst

  • Vissen

EWI Biomedische wetenschappen

  • B330-dierenfylogenie

Taxonomische lijst

  • beenvissen (Osteichtyes)

Geografische lijst

  • Europa
  • Nieuwe Wereld (Noord-, Centraal- en Zuid-Amerika)

Technologisch

  • genetische technieken

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