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Artículo

The complex evolutionary history of the tympanic middle ear in frogs and toads (Anura)

Pereyra, Martín OscarIcon ; Womack, Molly; Barrionuevo, Jose SebastianIcon ; Blotto Acuña, Boris LeonardoIcon ; Baldo, Juan DiegoIcon ; Targino, Mariane; Ospina Sarria, Jhon Jairo; Guayasamin, Juan M.; Coloma, Luis; Hoke, Kim L.; Grant, Taran; Faivovich, JuliánIcon
Fecha de publicación: 09/2016
Editorial: Nature Publishing Group
Revista: Scientific Reports
ISSN: 2045-2322
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Most anurans possess a tympanic middle ear (TME) that transmits sound waves to the inner ear; however, numerous species lack some or all TME components. Tounderstand the evolution of these structures, we undertook a comprehensiveassessment of their occurrence across anurans and performed ancestral character state reconstructions. Our analysis indicates that the TME was completely lost at least 38 independent times in Anura. The inferred evolutionary history of the TME is exceptionally complex in true toads (Bufonidae), where it was lost in the most recent common ancestor, preceding a radiation of >150 earless species. Following that initial loss, independent regains of some or all TME structures were inferred within two minor clades and in a radiation of >400 species. The reappearance of the TME in the latter clade was followed by at least 10 losses of the entire TME. The many losses and gains of the TME in anurans is unparalleled among tetrapods. Our results show that anurans, and especially bufonid toads, are an excellent model to study the behavioural correlates of earlessness, extratympanic sound pathways, and the genetic and developmental mechanisms that underlie the morphogenesis of TME structures.
Palabras clave: Anura , Bufonidae , Earlessness , Tympanic Annulus , Tympanic Membrane , Columella
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/40253
URL: http://www.nature.com/articles/srep34130
DOI: http://dx.doi.org/10.1038/srep34130
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Articulos(CCT - NORDESTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NORDESTE
Citación
Pereyra, Martín Oscar; Womack, Molly; Barrionuevo, Jose Sebastian; Blotto Acuña, Boris Leonardo; Baldo, Juan Diego; et al.; The complex evolutionary history of the tympanic middle ear in frogs and toads (Anura); Nature Publishing Group; Scientific Reports; 6; 3413; 9-2016; 1-9; supl.
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