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Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds
The evolution of flight in birds involves (i) decoupling of the primitive mode of quadrupedal locomotor coordination, with a new synchronized flapping motion of the wings while conserving alternating leg movements, and (ii) reduction of wing digits and loss of functional claws. Our observations show...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6530998/ https://www.ncbi.nlm.nih.gov/pubmed/31131317 http://dx.doi.org/10.1126/sciadv.aat0787 |
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author | Abourachid, Anick Herrel, Anthony Decamps, Thierry Pages, Fanny Fabre, Anne-Claire Van Hoorebeke, Luc Adriaens, Dominique Garcia Amado, Maria Alexandra |
author_facet | Abourachid, Anick Herrel, Anthony Decamps, Thierry Pages, Fanny Fabre, Anne-Claire Van Hoorebeke, Luc Adriaens, Dominique Garcia Amado, Maria Alexandra |
author_sort | Abourachid, Anick |
collection | PubMed |
description | The evolution of flight in birds involves (i) decoupling of the primitive mode of quadrupedal locomotor coordination, with a new synchronized flapping motion of the wings while conserving alternating leg movements, and (ii) reduction of wing digits and loss of functional claws. Our observations show that hoatzin nestlings move with alternated walking coordination of the four limbs using the mobile claws on their wings to anchor themselves to the substrate. When swimming, hoatzin nestlings use a coordinated motion of the four limbs involving synchronous or alternated movements of the wings, indicating a versatile motor pattern. Last, the proportions of claws and phalanges in juvenile hoatzin are radically divergent from those in adults, yet strikingly similar to those of Archaeopteryx. The locomotor plasticity observed in the hoatzin suggests that transitional forms that retained claws on the wings could have also used them for locomotion. |
format | Online Article Text |
id | pubmed-6530998 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-65309982019-05-26 Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds Abourachid, Anick Herrel, Anthony Decamps, Thierry Pages, Fanny Fabre, Anne-Claire Van Hoorebeke, Luc Adriaens, Dominique Garcia Amado, Maria Alexandra Sci Adv Research Articles The evolution of flight in birds involves (i) decoupling of the primitive mode of quadrupedal locomotor coordination, with a new synchronized flapping motion of the wings while conserving alternating leg movements, and (ii) reduction of wing digits and loss of functional claws. Our observations show that hoatzin nestlings move with alternated walking coordination of the four limbs using the mobile claws on their wings to anchor themselves to the substrate. When swimming, hoatzin nestlings use a coordinated motion of the four limbs involving synchronous or alternated movements of the wings, indicating a versatile motor pattern. Last, the proportions of claws and phalanges in juvenile hoatzin are radically divergent from those in adults, yet strikingly similar to those of Archaeopteryx. The locomotor plasticity observed in the hoatzin suggests that transitional forms that retained claws on the wings could have also used them for locomotion. American Association for the Advancement of Science 2019-05-22 /pmc/articles/PMC6530998/ /pubmed/31131317 http://dx.doi.org/10.1126/sciadv.aat0787 Text en Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Abourachid, Anick Herrel, Anthony Decamps, Thierry Pages, Fanny Fabre, Anne-Claire Van Hoorebeke, Luc Adriaens, Dominique Garcia Amado, Maria Alexandra Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds |
title | Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds |
title_full | Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds |
title_fullStr | Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds |
title_full_unstemmed | Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds |
title_short | Hoatzin nestling locomotion: Acquisition of quadrupedal limb coordination in birds |
title_sort | hoatzin nestling locomotion: acquisition of quadrupedal limb coordination in birds |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6530998/ https://www.ncbi.nlm.nih.gov/pubmed/31131317 http://dx.doi.org/10.1126/sciadv.aat0787 |
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