| Full text | |
| Author(s): Show less - |
Bronzati, Mario
;
Vieceli, Felipe M.
;
Botezelli, Vitoria S.
;
Godoy, Pedro L.
;
Montefeltro, Felipe C.
;
Nassif, Jann P. M.
;
Luzete, Juliana
;
Ribeiro, Douglas
;
Yan, C. Y. Irene
;
Werneburg, Ingmar
;
Kohlsdorf, Tiana
Total Authors: 11
|
| Document type: | Journal article |
| Source: | Current Biology; v. 34, n. 22, p. 13-pg., 2024-11-18. |
| Abstract | |
The invasion of terrestrial ecosystems by tetrapods (c. 375 million years [Ma]) represents one of the major evolutionary transitions in the history of life on Earth. The success of tetrapods on land is linked to evolutionary novelties. Among these, the evolution of a tympanic ear contributed to mitigating the problem of an impedance mismatch between the air and the fluid embedding sound-detecting hair cells in the inner ear.1-3Pioneering studies advocated that similarities in the tympanic ear of tetrapods could only result from a single origin of this structure in the group,4,5 an idea later challenged by paleontological and developmental data.4,6-8 Current evidence suggests that this sensory structure evolved independently in amphibians, mammals, and reptiles,1,6 but it remains uncertain how many times tympanic hearing originated in crown reptiles.9,10 We combine developmental information with paleontological data to evaluate the evolution of the tympanic ear in reptiles from two complementary perspectives. Phylogenetically informed ancestral reconstruction analyses of a taxonomically broad sample of early reptiles point to the presence of a tympanic membrane as the ancestral condition of the crown group. Consistently, comparative analyses using embryos of lizards and crocodylians reveal similarities, including the formation of the tympanic membrane within the second pharyngeal arch, which has been previously reported for birds. Therefore, both our developmental and paleontological data suggest a single origin for the tympanic middle ear in the group, challenging the current paradigm of multiple acquisitions of tympanic hearing in living reptiles. (AU) | |
| FAPESP's process: | 20/14780-1 - Evo-Devo in dynamic environments: implications of climatic changes in the biodiversity |
| Grantee: | Tiana Kohlsdorf |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 21/09535-0 - Investigating the homology of the tympanic ear in diapsida |
| Grantee: | Mario Bronzati Filho |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 18/18145-9 - INTEGRATING EVO-DEVO AND PALAEONTOLOGY ON THE STUDY OF THE ORIGIN AND EVOLUTION OF THE TYMPANIC MEMBRANE IN DIAPSIDA |
| Grantee: | Mario Bronzati Filho |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/07650-6 - Ecology, evolution and development (Eco-Evo-Devo) in the Brazilian herpetofauna |
| Grantee: | Tiana Kohlsdorf |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 22/05697-9 - Using comparative methods to fill the gaps of Crocodylomorph macroevolutionary knowledge |
| Grantee: | Pedro Lorena Godoy |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |