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Long-term experimen...
Long-term experimental hybridisation results in the evolution of a new sex chromosome in swordtail fish
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- Franchini, Paolo (författare)
- Univ Konstanz, Dept Biol, Lehrstuhl Zool & Evolut Biol, Univ Str 10, D-78457 Constance, Germany
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- Jones, Julia (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Univ Konstanz, Dept Biol, Lehrstuhl Zool & Evolut Biol, Univ Str 10, D-78457 Constance, Germany
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- Xiong, Peiwen (författare)
- Univ Konstanz, Dept Biol, Lehrstuhl Zool & Evolut Biol, Univ Str 10, D-78457 Constance, Germany
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- Kneitz, Susanne (författare)
- Univ Wurzburg, Biozentrum, Physiol Chem, D-97074 Wurzburg, Germany
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- Gompert, Zachariah (författare)
- Utah State Univ, Dept Biol, Logan, UT 84322 USA
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- Warren, Wesley C. (författare)
- Washington Univ, Sch Med, McDonnell Genome Inst, St Louis, MO 63108 USA
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- Walter, Ronald B. (författare)
- Texas State Univ, Dept Chem & Biochem, Xiphophorus Genet Stock Ctr, San Marcos, TX 78666 USA
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- Meyer, Axel (författare)
- Univ Konstanz, Dept Biol, Lehrstuhl Zool & Evolut Biol, Univ Str 10, D-78457 Constance, Germany;Harvard Univ, Radcliffe Inst Adv Study, 9 Garden St, Cambridge, MA 02139 USA
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- Schartl, Manfred (författare)
- Univ Wurzburg, Biozentrum, Physiol Chem, D-97074 Wurzburg, Germany;Univ Clin Wurzburg, Comprehens Canc Ctr, Josef Schneider Str 6, D-97074 Wurzburg, Germany;Texas A&M Univ, Hagler Inst Adv Study, College Stn, TX 77843 USA;Texas A&M Univ, Dept Biol, College Stn, TX 77843 USA
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(creator_code:org_t)
- 2018-12-03
- 2018
- Engelska.
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Ingår i: Nature Communications. - : NATURE PUBLISHING GROUP. - 2041-1723. ; 9
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The remarkable diversity of sex determination mechanisms known in fish may be fuelled by exceptionally high rates of sex chromosome turnovers or transitions. However, the evolutionary causes and genomic mechanisms underlying this variation and instability are yet to be understood. Here we report on an over 30-year evolutionary experiment in which we tested the genomic consequences of hybridisation and selection between two Xiphophorus fish species with different sex chromosome systems. We find that introgression and imposing selection for pigmentation phenotypes results in the retention of an unexpectedly large maternally derived genomic region. During the hybridisation process, the sex-determining region of the X chromosome from one parental species was translocated to an autosome in the hybrids leading to the evolution of a new sex chromosome. Our results highlight the complexity of factors contributing to patterns observed in hybrid genomes, and we experimentally demonstrate that hybridisation can catalyze rapid evolution of a new sex chromosome.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
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