Lung anatomy and histology of the extant coelacanth shed light on the loss of air-breathing during deep-water adaptation in actinistians - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Royal Society Open Science Année : 2017

Lung anatomy and histology of the extant coelacanth shed light on the loss of air-breathing during deep-water adaptation in actinistians

Camila Cupello
Marc Herbin
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  • IdHAL : marc-herbin
Paulo Brito
  • Fonction : Auteur

Résumé

Lungs are specialized organs originated from the posterior pharyngeal cavity and considered as plesiomorphic for osteichthyans, as they are found in extant basal actinopterygians (i.e. Polypterus ) and in all major groups of extant sarcopterygians. The presence of a vestigial lung in adult stages of the extant coelacanth Latimeria chalumnae is the result of allometric growth during ontogeny, in relation with long-time adaptation to deep water. Here, we present the first detailed histological and anatomical description of the lung of Latimeria chalumnae , providing new insights into its arrested differentiation in an air-breathing complex, mainly represented by the absence of pneumocytes and of compartmentalization in the latest ontogenetic stages.

Dates et versions

hal-03945381 , version 1 (18-01-2023)

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Citer

Camila Cupello, François Meunier, Marc Herbin, Gaël Clément, Paulo Brito. Lung anatomy and histology of the extant coelacanth shed light on the loss of air-breathing during deep-water adaptation in actinistians. Royal Society Open Science, 2017, 4 (3), pp.161030. ⟨10.1098/rsos.161030⟩. ⟨hal-03945381⟩
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