The long-time adaptation of coelacanths to moderate deep water: reviewing the evidences

  • CUPELLO Camila
    Departamento de Zoologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro
  • CLÉMENT Gaël
    UMR 7207 (MNHN–Sorbonne Université–CNRS) Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements, Département Origines & Evolution, Muséum national d'Histoire naturelle
  • MEUNIER François J.
    UMR 7208 (MNHN - Sorbonne Université - Univ. Caen Normandie - Univ. Antilles – CNRS – IRD) Biologie des Organismes et Ecosystèmes Aquatiques, Département Adaptations du Vivant, Muséum national d'Histoire naturelle
  • HERBIN Marc
    UMR 7179 (MNHN-Sorbonne Université-CNRS) Mécanismes Adaptatifs & Evolution, Département Adaptations du Vivant, Muséum national d'Histoire naturelle
  • YABUMOTO Yoshitaka
    Department of Natural History, Kitakyushu Museum of Natural History and Human History
  • BRITO Paulo M.
    Departamento de Zoologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro

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Other Title
  • シーラカンスの長い時間をかけた深海への適応:証拠のレビュー

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<p>The evolutionary history of coelacanths is long and complex with indications of adaptations to different aquatic environments. Fossil coelacanths are registered in shallow brackish, fresh or marine waters, while extant coelacanths inhabit moderate deep marine environments. Here we review some evidences of this long-time adaptation to moderate deep waters, focusing mainly on the hypothesis of bimodal respiration (gas exchange through gills and lungs) in most fossil coelacanths and on the aquatic gas exchange and the presence of a non-functional lung in the extant coelacanth Latimeria chalumnae. Another morphological evidence is the high rate of lipid accumulation in the whole body of L. chalumnae.</p>

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