Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development
Chondrichthyans are now widely adopted as models for examining the development and evolution of the stem gnathostome body plan. The fins of some cartilaginous fish are recognized for their plesiomorphic form and mode of muscular development, i.e., epithelial extension. Despite detailed molecular and...
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| Format: | Journal Article |
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Frontiers Media
2022
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| Online Access: | http://purl.org/au-research/grants/arc/DP1096002 http://hdl.handle.net/20.500.11937/87806 |
| _version_ | 1848764938851450880 |
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| author | Pears, Jacob B Tillett, Carley Tahara, Rui Larsson, Hans CE Boisvert, Catherine A |
| author2 | Ferrier, David E |
| author_facet | Ferrier, David E Pears, Jacob B Tillett, Carley Tahara, Rui Larsson, Hans CE Boisvert, Catherine A |
| author_sort | Pears, Jacob B |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Chondrichthyans are now widely adopted as models for examining the development and evolution of the stem gnathostome body plan. The fins of some cartilaginous fish are recognized for their plesiomorphic form and mode of muscular development, i.e., epithelial extension. Despite detailed molecular and descriptive examinations of these developmental mechanisms, there has been little contemporary examination of the ontogeny and morphology of the musculature in chondrichthyans including that of the paired fins. This gap represents a need for further examination of the developmental morphology of these appendicular musculatures to gain insight into their evolution in gnathostomes. The elephant shark is a Holocephalan, the sister group of all other chondrichthyans (Holocephali: Callorhinchus milii). Here, we use nano-CT imaging and 3D reconstructions to describe the development of the pelvic musculature of a growth series of elephant shark embryos. We also use historical descriptions from the nineteenth century and traditional dissection methods to describe the adult anatomy. This combined approach, using traditional methods and historical knowledge with modern imaging techniques, has enabled a more thorough examination of the anatomy and development of the pelvic musculature revealing that chimaeroid musculatures are more complex than previously thought. These data, when compared to extant and extinct sister taxa, are essential for interpreting and reconstructing fossil musculatures as well as understanding the evolution of paired fins. |
| first_indexed | 2025-11-14T11:27:19Z |
| format | Journal Article |
| id | curtin-20.500.11937-87806 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:27:19Z |
| publishDate | 2022 |
| publisher | Frontiers Media |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-878062022-03-04T01:15:35Z Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development Pears, Jacob B Tillett, Carley Tahara, Rui Larsson, Hans CE Boisvert, Catherine A Ferrier, David E Chondrichthyans are now widely adopted as models for examining the development and evolution of the stem gnathostome body plan. The fins of some cartilaginous fish are recognized for their plesiomorphic form and mode of muscular development, i.e., epithelial extension. Despite detailed molecular and descriptive examinations of these developmental mechanisms, there has been little contemporary examination of the ontogeny and morphology of the musculature in chondrichthyans including that of the paired fins. This gap represents a need for further examination of the developmental morphology of these appendicular musculatures to gain insight into their evolution in gnathostomes. The elephant shark is a Holocephalan, the sister group of all other chondrichthyans (Holocephali: Callorhinchus milii). Here, we use nano-CT imaging and 3D reconstructions to describe the development of the pelvic musculature of a growth series of elephant shark embryos. We also use historical descriptions from the nineteenth century and traditional dissection methods to describe the adult anatomy. This combined approach, using traditional methods and historical knowledge with modern imaging techniques, has enabled a more thorough examination of the anatomy and development of the pelvic musculature revealing that chimaeroid musculatures are more complex than previously thought. These data, when compared to extant and extinct sister taxa, are essential for interpreting and reconstructing fossil musculatures as well as understanding the evolution of paired fins. 2022 Journal Article http://hdl.handle.net/20.500.11937/87806 10.3389/fevo.2021.812561 http://purl.org/au-research/grants/arc/DP1096002 http://creativecommons.org/licenses/by/4.0/ Frontiers Media fulltext |
| spellingShingle | Pears, Jacob B Tillett, Carley Tahara, Rui Larsson, Hans CE Boisvert, Catherine A Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development |
| title | Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development |
| title_full | Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development |
| title_fullStr | Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development |
| title_full_unstemmed | Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development |
| title_short | Imaging With the Past: Revealing the Complexity of Chimaeroid Pelvic Musculature Anatomy and Development |
| title_sort | imaging with the past: revealing the complexity of chimaeroid pelvic musculature anatomy and development |
| url | http://purl.org/au-research/grants/arc/DP1096002 http://hdl.handle.net/20.500.11937/87806 |