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The rapid evolution of lungfish durophagy

Author

Listed:
  • Xindong Cui

    (Chinese Academy of Sciences
    CAS Center for Excellence in Life and Paleoenvironment
    University of Chinese Academy of Sciences)

  • Matt Friedman

    (University of Michigan)

  • Tuo Qiao

    (Chinese Academy of Sciences
    CAS Center for Excellence in Life and Paleoenvironment)

  • Yilun Yu

    (Chinese Academy of Sciences
    CAS Center for Excellence in Life and Paleoenvironment
    University of Chinese Academy of Sciences)

  • Min Zhu

    (Chinese Academy of Sciences
    CAS Center for Excellence in Life and Paleoenvironment
    University of Chinese Academy of Sciences)

Abstract

Innovations relating to the consumption of hard prey are implicated in ecological shifts in marine ecosystems as early as the mid-Paleozoic. Lungfishes represent the first and longest-ranging lineage of durophagous vertebrates, but how and when the various feeding specializations of this group arose remain unclear. Two exceptionally preserved fossils of the Early Devonian lobe-finned fish Youngolepis reveal the origin of the specialized lungfish feeding mechanism. Youngolepis has a radically restructured palate, reorienting jaw muscles for optimal force transition, coupled with radiating entopterygoid tooth rows like those of lungfish toothplates. This triturating surface occurs in conjunction with marginal dentition and blunt coronoid fangs, suggesting a role in crushing rather than piercing prey. Bayesian tip-dating analyses incorporating these morphological data indicate that the complete suite of lungfish feeding specializations may have arisen in as little as 7 million years, representing one of the most striking episodes of innovation during the initial evolutionary radiations of bony fishes.

Suggested Citation

  • Xindong Cui & Matt Friedman & Tuo Qiao & Yilun Yu & Min Zhu, 2022. "The rapid evolution of lungfish durophagy," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30091-3
    DOI: 10.1038/s41467-022-30091-3
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    References listed on IDEAS

    as
    1. Jing Lu & Sam Giles & Matt Friedman & Min Zhu, 2017. "A new stem sarcopterygian illuminates patterns of character evolution in early bony fishes," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    2. Philip S. L. Anderson & Matt Friedman & Martin D. Brazeau & Emily J. Rayfield, 2011. "Initial radiation of jaws demonstrated stability despite faunal and environmental change," Nature, Nature, vol. 476(7359), pages 206-209, August.
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    4. Jason P. Downs & Edward B. Daeschler & Farish A. Jenkins & Neil H. Shubin, 2008. "The cranial endoskeleton of Tiktaalik roseae," Nature, Nature, vol. 455(7215), pages 925-929, October.
    5. Andrew C. Baker & Craig J. Starger & Tim R. McClanahan & Peter W. Glynn, 2004. "Corals' adaptive response to climate change," Nature, Nature, vol. 430(7001), pages 741-741, August.
    6. Qingming Qu & Tatjana Haitina & Min Zhu & Per Erik Ahlberg, 2015. "New genomic and fossil data illuminate the origin of enamel," Nature, Nature, vol. 526(7571), pages 108-111, October.
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