Development of the viscerocranial skeleton during embryogenesis of the sea lamprey, Petromyzon Marinus

Developmental Dynamics : an Official Publication of the American Association of Anatomists
Wendy M MartinDavid W McCauley

Abstract

Evolution of the skeleton was a key transition in early vertebrates. Lampreys lack a mineralized skeleton but possess cartilaginous neurocranial and viscerocranial elements. In lampreys, the visceral skeleton develops as a fused branchial basket supporting the pharynx. Here, we have adapted Alcian blue staining of lamprey cartilage and show this method results in cartilage fluorescence that we used to describe development of the branchial skeleton in Petromyzon marinus between 17 and 63 days of development. We show that skeletal rods develop from condensations of flattened discoidal chondrocytes and may involve cellular intercalation. Lamprey trabecular, parachordal, and subchordal cartilages consist of aggregations of polygonal chondrocytes positioned on the ventral and lateral surfaces of the notochord. We speculate that morphological differences relate to functional differences in the cartilage. We show that differentiated skeletal rods are derived from neural crest. Finally, we show how branchial muscles intercalate with skeletal rods of the branchial basket.

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Citations

Sep 22, 2010·Proceedings of the National Academy of Sciences of the United States of America·Robert CernyDaniel Meulemans Medeiros
Jul 30, 2011·PloS One·Maria CattellDaniel Meulemans Medeiros
Jul 3, 2013·Proceedings of the National Academy of Sciences of the United States of America·Frank J TulenkoAnn C Burke
Sep 29, 2012·Evolution & Development·Shigeru Kuratani
Feb 25, 2014·Differentiation; Research in Biological Diversity·Stephen A Green, Marianne E Bronner
Sep 11, 2012·Developmental Biology·Daniel Meulemans Medeiros, J Gage Crump
Jun 6, 2012·Current Opinion in Genetics & Development·Shannon Fisher, Tamara Franz-Odendaal
Jun 12, 2014·Nature·Simon Conway Morris, Jean-Bernard Caron
Feb 13, 2020·Genesis : the Journal of Genetics and Development·Tian YuanDavid W McCauley
Feb 26, 2011·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Tuoya YaoHiroshi Wada
Sep 5, 2019·Biomimetics·Fabio Galbusera, Tito Bassani
Apr 23, 2021·Developmental Biology·Zachary D RootDaniel M Medeiros

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