Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa

The systematic value of the middle-ear ossicles, in particular the malleus, has been long recognized for diverse groups. We present systematic work on the characters of the middle-ear ossicles of pinnipeds, focusing on until now poorly studied Southern Hemisphere species. Mallei were extracted from...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Loza, Cleopatra Mara, Reutimann, Oliver, Sánchez Villagra, Marcelo R., Carlini, Alfredo Armando, Aguirre Fernández, Gabriel
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2018
Materias:	Ciencias Naturales adaptation aquatic mammals middle ear ossicles phylogeny
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/124306
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-124306
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Naturales adaptation aquatic mammals middle ear ossicles phylogeny
spellingShingle	Ciencias Naturales adaptation aquatic mammals middle ear ossicles phylogeny Loza, Cleopatra Mara Reutimann, Oliver Sánchez Villagra, Marcelo R. Carlini, Alfredo Armando Aguirre Fernández, Gabriel Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
topic_facet	Ciencias Naturales adaptation aquatic mammals middle ear ossicles phylogeny
description	The systematic value of the middle-ear ossicles, in particular the malleus, has been long recognized for diverse groups. We present systematic work on the characters of the middle-ear ossicles of pinnipeds, focusing on until now poorly studied Southern Hemisphere species. Mallei were extracted from 16 specimens of pinnipeds belonging to five austral and one boreal species of Phocidae and two austral species of Otariidae. Several characters used in this study have been described previously, and some were here modified. Three new characters are here defined and analysed. All characters were mapped onto the phylogeny. Our character analysis shows the transformations that have occurred in the evolution of middle ear ossicles in pinnipeds and identifies diagnostic features of many of its clades. Beyond the identification of specific changes within eachclade, our study of pinniped ossicle evolution documents the occurrence of anatomical convergences with other groups of mammals that live in an aquatic environment, as has occurred in other organsystems as well.
format	Articulo Articulo
author	Loza, Cleopatra Mara Reutimann, Oliver Sánchez Villagra, Marcelo R. Carlini, Alfredo Armando Aguirre Fernández, Gabriel
author_facet	Loza, Cleopatra Mara Reutimann, Oliver Sánchez Villagra, Marcelo R. Carlini, Alfredo Armando Aguirre Fernández, Gabriel
author_sort	Loza, Cleopatra Mara
title	Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
title_short	Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
title_full	Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
title_fullStr	Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
title_full_unstemmed	Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
title_sort	evolutionary transformations of the malleus in pinnipeds, with emphasis on southern hemisphere taxa
publishDate	2018
url	http://sedici.unlp.edu.ar/handle/10915/124306
work_keys_str_mv	AT lozacleopatramara evolutionarytransformationsofthemalleusinpinnipedswithemphasisonsouthernhemispheretaxa AT reutimannoliver evolutionarytransformationsofthemalleusinpinnipedswithemphasisonsouthernhemispheretaxa AT sanchezvillagramarcelor evolutionarytransformationsofthemalleusinpinnipedswithemphasisonsouthernhemispheretaxa AT carlinialfredoarmando evolutionarytransformationsofthemalleusinpinnipedswithemphasisonsouthernhemispheretaxa AT aguirrefernandezgabriel evolutionarytransformationsofthemalleusinpinnipedswithemphasisonsouthernhemispheretaxa
bdutipo_str	Repositorios
_version_	1764820450073903105

Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa

Ejemplares similares