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Trunk exoskeleton in teleosts is mesodermal in origin

Author

Listed:
  • Atsuko Shimada

    (Graduate School of Science, University of Tokyo)

  • Toru Kawanishi

    (Graduate School of Science, University of Tokyo)

  • Takuya Kaneko

    (Graduate School of Science, University of Tokyo)

  • Hiroki Yoshihara

    (Graduate School of Life Sciences, Tohoku University, Aobayama)

  • Tohru Yano

    (Graduate School of Life Sciences, Tohoku University, Aobayama)

  • Keiji Inohaya

    (Tokyo Institute of Technology)

  • Masato Kinoshita

    (Graduate School of Agriculture, Kyoto University)

  • Yasuhiro Kamei

    (Spectrography and Bioimaging Facility, National Institute for Basic Biology, Myodaiji)

  • Koji Tamura

    (Graduate School of Life Sciences, Tohoku University, Aobayama)

  • Hiroyuki Takeda

    (Graduate School of Science, University of Tokyo)

Abstract

The vertebrate mineralized skeleton is known to have first emerged as an exoskeleton that extensively covered the fossil jawless fish. The evolutionary origin of this exoskeleton has long been attributed to the emergence of the neural crest, but experimental evaluation for this is still poor. Here we determine the embryonic origin of scales and fin rays of medaka (teleost trunk exoskeletons) by applying long-term cell labelling methods, and demonstrate that both tissues are mesodermal in origin. Neural crest cells, however, fail to contribute to these tissues. This result suggests that the trunk neural crest has no skeletogenic capability in fish, instead highlighting the dominant role of the mesoderm in the evolution of the trunk skeleton. This further implies that the role of the neural crest in skeletogenesis has been predominant in the cephalic region from the early stage of vertebrate evolution.

Suggested Citation

  • Atsuko Shimada & Toru Kawanishi & Takuya Kaneko & Hiroki Yoshihara & Tohru Yano & Keiji Inohaya & Masato Kinoshita & Yasuhiro Kamei & Koji Tamura & Hiroyuki Takeda, 2013. "Trunk exoskeleton in teleosts is mesodermal in origin," Nature Communications, Nature, vol. 4(1), pages 1-8, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2643
    DOI: 10.1038/ncomms2643
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    Cited by:

    1. Masayuki Tsukasaki & Noriko Komatsu & Takako Negishi-Koga & Nam Cong-Nhat Huynh & Ryunosuke Muro & Yutaro Ando & Yuka Seki & Asuka Terashima & Warunee Pluemsakunthai & Takeshi Nitta & Takashi Nakamura, 2022. "Periosteal stem cells control growth plate stem cells during postnatal skeletal growth," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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