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

Autores
Loza, Cleopatra Mara; Reutimann, Oliver; Sánchez Villagra, Marcelo R.; Carlini, Alfredo Armando; Aguirre Fernández, Gabriel
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
adaptation
aquatic mammals
middle ear
ossicles
phylogeny
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/124306
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/124306
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxaLoza, Cleopatra MaraReutimann, OliverSánchez Villagra, Marcelo R.Carlini, Alfredo ArmandoAguirre Fernández, GabrielCiencias Naturalesadaptationaquatic mammalsmiddle earossiclesphylogenyThe 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.Facultad de Ciencias Naturales y Museo2018-07-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf75-85http://sedici.unlp.edu.ar/handle/10915/124306enginfo:eu-repo/semantics/altIdentifier/issn/1875-9866info:eu-repo/semantics/altIdentifier/issn/1383-4517info:eu-repo/semantics/altIdentifier/doi/10.1163/18759866-08702002info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/4.0/Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:10:49Zoai:sedici.unlp.edu.ar:10915/124306Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:10:49.34SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
title Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
spellingShingle Evolutionary transformations of the malleus in pinnipeds, with emphasis on Southern Hemisphere taxa
Loza, Cleopatra Mara
Ciencias Naturales
adaptation
aquatic mammals
middle ear
ossicles
phylogeny
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
dc.creator.none.fl_str_mv Loza, Cleopatra Mara
Reutimann, Oliver
Sánchez Villagra, Marcelo R.
Carlini, Alfredo Armando
Aguirre Fernández, Gabriel
author Loza, Cleopatra Mara
author_facet Loza, Cleopatra Mara
Reutimann, Oliver
Sánchez Villagra, Marcelo R.
Carlini, Alfredo Armando
Aguirre Fernández, Gabriel
author_role author
author2 Reutimann, Oliver
Sánchez Villagra, Marcelo R.
Carlini, Alfredo Armando
Aguirre Fernández, Gabriel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
adaptation
aquatic mammals
middle ear
ossicles
phylogeny
topic Ciencias Naturales
adaptation
aquatic mammals
middle ear
ossicles
phylogeny
dc.description.none.fl_txt_mv 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.
Facultad de Ciencias Naturales y Museo
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.
publishDate 2018
dc.date.none.fl_str_mv 2018-07-18
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/124306
url http://sedici.unlp.edu.ar/handle/10915/124306
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1875-9866
info:eu-repo/semantics/altIdentifier/issn/1383-4517
info:eu-repo/semantics/altIdentifier/doi/10.1163/18759866-08702002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/4.0/
Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/4.0/
Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
dc.format.none.fl_str_mv application/pdf
75-85
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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