The remarkable dynamics in the establishment, rearrangement, and loss of dentition during the ontogeny of the sterlet sturgeon
Abstract
Background: Sturgeons belong to an early-branching lineage often used as a proxy of ancestor-like traits of ray-finned fishes. However, many features of this lineage, such as the transitory presence and the eventual loss of dentition, exemplify specializations that, in fact, provide important information on lineage-specific evolutionary dynamics. Results: Here, we introduce a detailed overview of the dentition during the development of the sterlet sturgeon. The dentition is composed of tooth fields at oral, palatal, and anterior pharyngeal regions. Oral fields are single-rowed, non-renewed and are shed early. Palatal and pharyngeal fields are multi-rowed and renewed from the adjacent superficial epithelium without the presence of the successional dental lamina. The early loss of oral fields and subsequent establishment of palatal and pharyngeal fields leads to a translocation of the functional dentition from the front to the rear of the oropharyngeal cavity until the eventual loss of all teeth. Conclusion: Our survey shows the sterlet dentition as a dynamic organ system displaying differential composition at different time points in the lifetime of this fish. These dynamics represent a conspicuous feature of sturgeons, unparalleled among extant vertebrates, and appropriate to scrutinize developmental and evolutionary underpinnings of vertebrate odontogenesis.
Additional Information
© 2021 Wiley Periodicals, Inc. Issue Online: 02 May 2022; Version of Record online: 15 December 2021; Accepted manuscript online: 30 November 2021; Manuscript accepted: 22 November 2021; Manuscript revised: 15 November 2021; Manuscript received: 23 July 2021. Funding information: Stiftung Aktion Österreich-Tschechische Republik, Grant/Award Number: ICM-2016-03562; Charles University, Grant, Grant/Award Number: SVV 260571/2021; Charles University Research Centre, Grant/Award Numbers: 204056, 204069; Grant Agency of the Charles University, Grant/Award Number: GAUK 640616; Grantová Agentura České Republiky, Grant/Award Number: 18-04580S; Ministry of Education, Youth and Sports of the Czech Republic, Grant/Award Numbers: CZ.02.1.01/0.0/0.0/16_025/0007370, LM2018099.Attached Files
Supplemental Material - dvdy444-sup-0001-tables1.pdf
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Additional details
- Eprint ID
- 112148
- Resolver ID
- CaltechAUTHORS:20211201-202909594
- ICM-2016-03562
- Stiftung Aktion Österreich-Tschechische Republik
- SVV 260571/2021
- Charles University
- 204056
- Charles University
- 204069
- Charles University
- GAUK 640616
- Charles University
- 18-04580S
- Grantová Agentura České Republiky
- CZ.02.1.01/0.0/0.0/16_025/0007370
- Ministry of Education, Youth and Sports (Czech Republic)
- LM2018099
- Ministry of Education, Youth and Sports (Czech Republic)
- Created
-
2021-12-01Created from EPrint's datestamp field
- Updated
-
2022-05-06Created from EPrint's last_modified field