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INTEGRATING EVO-DEVO AND PALAEONTOLOGY ON THE STUDY OF THE ORIGIN AND EVOLUTION OF THE TYMPANIC MEMBRANE IN DIAPSIDA

Grant number: 18/18145-9
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): April 01, 2019
Effective date (End): March 31, 2022
Field of knowledge:Biological Sciences - Zoology
Principal researcher:Tiana Kohlsdorf
Grantee:Mario Bronzati Filho
Home Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
Associated research grant:15/07650-6 - Ecology, evolution and development (Eco-Evo-Devo) in the Brazilian herpetofauna, AP.TEM

Abstract

This project is dedicated to the study of the tympanic ear in Diapsida (snakes, lizards, tuatara, crocodylians, birds, and their extinct relatives), a group of amniotes with a long evolutionary history (c. 300 Ma), and that encompasses great diversity and morphological disparity in the extinct and extant lineages. The main goal consists in establishing a hypothesis for one of the longest-standing debate in evolutionary biology: the occurrence of single or multiple origins of the tympanic ear in Diapsida and its subgroups. For that, a detailed study of one of its components, the tympanic membrane, will be conducted promoting an interface between Evo-Devo and Palaeontology. Using CT-Scans and histological sections, we intend to provide a detailed characterization of the distinct stages of the embryonic development of the otic region in lizards Tropidurus catalanensis, caimans Caiman latirostris, and birds Gallus gallus. Still on the developmental part of this study, the gene expression in three different stages (initial, intermediate, membrane fully-developed) of the developmental processes of the otic will also be compared using transcriptomic analyses (RNAseq). Analyses of fossil materials of diapsids composes the palaeontological aspect of this project. These will seek to identify the presence/absence of the osteological correlates (determined on the basis of the morphology of the living species) of the tympanic membrane in fossil taxa. Developmental and palaeontological data will be integrated in order to formulate a new hypothesis regarding the levels of homology (i.e. classic homology vs deep homology) of the tympanic membrane in Diapsida and subgroups. Using modern techniques, and combining two distinct fields in the investigation of the origin of the tympanic ear in Diapsida represents a conceptual and methodological innovation, with implications for different areas of Biology.

Articles published in other media outlets (7 total):
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Folha de S. Paulo: Ouvidos para correr, escalar, voar (02/May/2021)
Folha.com: Estudo mostra como ouvido interno de dinos e aves evoluiu para que eles corressem e voassem (01/May/2021)
Folha de S. Paulo: Répteis que viviam em árvores são parentes de pterossauros (10/Dec/2020)
Folha.com: Répteis que viviam em árvores ajudam a desvendar origem dos pterossauros (09/Dec/2020)
Francisco Gomes da Silva: Amazônia perdeu boa parte de sua população antes da chegada dos europeus, indica análise de pólen (03/May/2021)
Stony Brook University (EUA): Scientists Identify a Group of Small Dinosaur-like Animals as Closest Relatives of Pterosaurs (09/Dec/2020)
Pet Age (EUA) online: Fossil Discovery Closes Gap Between Pterosaurs, Other Reptiles (08/Dec/2020)

Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
HERRERA, YANINA; AIGLSTORFER, MANUELA; BRONZATI, MARIO. A new species of Cricosaurus (Thalattosuchia: Crocodylomorpha) from southern Germany: the first three-dimensionally preserved Cricosaurus skull from the Solnhofen Archipelago. JOURNAL OF SYSTEMATIC PALAEONTOLOGY, v. 19, n. 2 FEB 2021. Web of Science Citations: 0.
FACHINI, THIAGO SCHINEIDER; ONARY, SILVIO; PALCI, ALESSANDRO; LEE, MICHAEL S. Y.; BRONZATI, MARIO; HSIOU, ANNIE SCHMALTZ. Cretaceous Blind Snake from Brazil Fills Major Gap in Snake Evolution. ISCIENCE, v. 23, n. 12 DEC 18 2020. Web of Science Citations: 0.
EZCURRA, MARTIN D.; NESBITT, STERLING J.; BRONZATI, MARIO; DALLA VECCHIA, FABIO MARCO; AGNOLIN, FEDERICO L.; BENSON, ROGER B. J.; BRISSON EGLI, FEDERICO; CABREIRA, SERGIO F.; EVERS, SERJOSCHA W.; GENTIL, ADRIEL R.; IRMIS, RANDALL B.; MARTINELLI, AGUSTIN G.; NOVAS, FERNANDO E.; ROBERTO DA SILVA, LUCIO; SMITH, NATHAN D.; STOCKER, MICHELLE R.; TURNER, ALAN H.; LANGER, MAX C. Enigmatic dinosaur precursors bridge the gap to the origin of Pterosauria. Nature, v. 588, n. 7838 DEC 2020. Web of Science Citations: 2.
MUELLER, RODRIGO T.; FERREIRA, JOSE D.; PRETTO, FLAVIO A.; BRONZATI, MARIO; KERBER, LEONARDO. The endocranial anatomy of Buriolestes schultzi (Dinosauria: Saurischia) and the early evolution of brain tissues in sauropodomorph dinosaurs. Journal of Anatomy, v. 238, n. 4 NOV 2020. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.