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Evolution of Darwin’s finches and their beaks revealed by genome sequencing

Author

Listed:
  • Sangeet Lamichhaney

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Jonas Berglund

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Markus Sällman Almén

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Khurram Maqbool

    (Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden)

  • Manfred Grabherr

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Alvaro Martinez-Barrio

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Marta Promerová

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Carl-Johan Rubin

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Chao Wang

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Neda Zamani

    (Uppsala University, SE-751 23 Uppsala, Sweden
    Umeå University, SE-901 87 Umeå, Sweden)

  • B. Rosemary Grant

    (Princeton University)

  • Peter R. Grant

    (Princeton University)

  • Matthew T. Webster

    (Uppsala University, SE-751 23 Uppsala, Sweden)

  • Leif Andersson

    (Uppsala University, SE-751 23 Uppsala, Sweden
    Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden
    Texas A&M University)

Abstract

Darwin’s finches, inhabiting the Galápagos archipelago and Cocos Island, constitute an iconic model for studies of speciation and adaptive evolution. Here we report the results of whole-genome re-sequencing of 120 individuals representing all of the Darwin’s finch species and two close relatives. Phylogenetic analysis reveals important discrepancies with the phenotype-based taxonomy. We find extensive evidence for interspecific gene flow throughout the radiation. Hybridization has given rise to species of mixed ancestry. A 240 kilobase haplotype encompassing the ALX1 gene that encodes a transcription factor affecting craniofacial development is strongly associated with beak shape diversity across Darwin's finch species as well as within the medium ground finch (Geospiza fortis), a species that has undergone rapid evolution of beak shape in response to environmental changes. The ALX1 haplotype has contributed to diversification of beak shapes among the Darwin’s finches and, thereby, to an expanded utilization of food resources.

Suggested Citation

  • Sangeet Lamichhaney & Jonas Berglund & Markus Sällman Almén & Khurram Maqbool & Manfred Grabherr & Alvaro Martinez-Barrio & Marta Promerová & Carl-Johan Rubin & Chao Wang & Neda Zamani & B. Rosemary G, 2015. "Evolution of Darwin’s finches and their beaks revealed by genome sequencing," Nature, Nature, vol. 518(7539), pages 371-375, February.
    • Handle: RePEc:nat:nature:v:518:y:2015:i:7539:d:10.1038_nature14181
    DOI: 10.1038/nature14181
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    Cited by:

    1. Yee Wen Low & Sitaram Rajaraman & Crystal M. Tomlin & Joffre Ali Ahmad & Wisnu H. Ardi & Kate Armstrong & Parusuraman Athen & Ahmad Berhaman & Ruth E. Bone & Martin Cheek & Nicholas R. W. Cho & Le Min, 2022. "Genomic insights into rapid speciation within the world’s largest tree genus Syzygium," Nature Communications, Nature, vol. 13(1), pages 1-15, December.

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