Development of the branchial musculature of the Siberian sturgeon ( Acipenser baerii ) reveals a heterochronic shift during the evolution of acipenseriform cranial muscles ...
doi:10.1101/2023.02.14.528484 ... : Heterochronic shifts are regarded one of the major evolutionary changes acting on developmental modules and underlying the origin of morphological disparity. Conserved characters, rarely subject to heterochronic shifts during the curse of evolution, in contrast co...
| Main Authors: | , , , , , |
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| Format: | Report |
| Language: | English |
| Published: |
Deutsches Elektronen-Synchrotron, DESY, Hamburg
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.3204/pubdb-2023-05532 https://bib-pubdb1.desy.de/record/593866 |
| Summary: | doi:10.1101/2023.02.14.528484 ... : Heterochronic shifts are regarded one of the major evolutionary changes acting on developmental modules and underlying the origin of morphological disparity. Conserved characters, rarely subject to heterochronic shifts during the curse of evolution, in contrast could indicate underlying developmental or functional constraints. Here we use the development of the cranial musculature Siberian sturgeon (Acipenser baerii) as a model to investigate the role of heterochrony during the evolution of the craniofacial system of Actinopterygii. Using histology, fluorescent antibody staining and fast propagation-based phase contrast imaging in combination with 3D-reconstruction we describe the development of the branchial and hypobranchial musculature. We show that the development of the first branchial arch is accelerated compared to other basal-branching actinopterygians leading to a more synchronous development with the hyoid arch. A pattern that could relate to the derived migratory behaviour of the neural crest ... |
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