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The rise and fall of the ancient northern pike master sex-determining gene
- Source :
- eLife, eLife, eLife Sciences Publication, 2021, 10, pp.1-30. ⟨10.7554/eLife.62858⟩, eLife, Vol 10 (2021), eLife, 2021, 10, pp.e62858. ⟨10.7554/eLife.62858⟩, eLife, 2021, 10, pp.1-30. ⟨10.7554/eLife.62858⟩, eLife. 2021. Vol. 10. P. e62858 (1-30), eLife, vol. 10, pp. e62858
- Publication Year :
- 2020
- Publisher :
- HAL CCSD, 2020.
-
Abstract
- Sexual reproduction is a ubiquitous basic feature of life and genetic sex determination is thus widespread, at least among eukaryotes. Understanding the remarkable diversity of sex determination mechanisms, however, is limited by the paucity of empirical studies. Here, we traced back the evolution of sex determination in an entire clade of vertebrates and uncovered that the northern pike (Esox lucius) master sex-determining gene initiated from a 65 to 90 million-year-old gene duplication and remained sex-linked on undifferentiated sex chromosomes for at least 56 million years. Contrasting with its ancient origin, we identified several independent species- or population-specific transitions of sex determination mechanisms in this lineage, including an unexpected complete and recent Y-chromosome loss in some North American northern pike populations. These findings highlight the diversity of the evolutionary fates of master sex-determining genes and raise the importance of careful considerations of population demographic history in sex determination studies. Our study also puts forward the hypothesis that occasional sex reversals and genetic bottlenecks provide a non-adaptive explanation for sex determination transitions.
- Subjects :
- Male
0106 biological sciences
0301 basic medicine
Evolution of sexual reproduction
Lineage (evolution)
[SDV]Life Sciences [q-bio]
sex determination
01 natural sciences
mudminnows
Gene Duplication
Gene duplication
Biology (General)
Clade
master sex determining gene
Phylogeny
северная щука
computer.programming_language
гены, определяющие пол
0303 health sciences
education.field_of_study
Sex Chromosomes
biology
umbridae
General Neuroscience
General Medicine
[SDV] Life Sciences [q-bio]
Medicine
Female
Research Article
QH301-705.5
Demographic history
Science
Population
esocidae
Y chromosome
010603 evolutionary biology
General Biochemistry, Genetics and Molecular Biology
03 medical and health sciences
Animals
education
Esox
pikes
030304 developmental biology
Pike
fish
General Immunology and Microbiology
evolutionary biology
Sex Determination Processes
biology.organism_classification
esociforms
Sexual reproduction
030104 developmental biology
Evolutionary biology
Other
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
computer
Sex linkage
Subjects
Details
- Language :
- English
- ISSN :
- 2050084X
- Database :
- OpenAIRE
- Journal :
- eLife, eLife, eLife Sciences Publication, 2021, 10, pp.1-30. ⟨10.7554/eLife.62858⟩, eLife, Vol 10 (2021), eLife, 2021, 10, pp.e62858. ⟨10.7554/eLife.62858⟩, eLife, 2021, 10, pp.1-30. ⟨10.7554/eLife.62858⟩, eLife. 2021. Vol. 10. P. e62858 (1-30), eLife, vol. 10, pp. e62858
- Accession number :
- edsair.doi.dedup.....a4aff400fc44991ea2948aa1c4e5d575