The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja)

Mustelids are a morphofunctionally diversified group. However, there are no descriptions of the postcranial musculature of South American mustelid species except for some comments from the 19th century. Here, we present the first description of the myology of the hind limbs, and lumbar, sacral, and...

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Autores principales: Ercoli, Marcos Darío, Echarri, Sebastián, Busker, Felipe, Turazzini, Guillermo Fidel
Publicado: 2013
Materias:
Galictis
Hind limb
Lumbar region
Mustelidae
Myology
Tail
Galictis cuja
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10647554_v20_n4_p309_Ercoli
http://hdl.handle.net/20.500.12110/paper_10647554_v20_n4_p309_Ercoli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10647554_v20_n4_p309_Ercoli
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spelling paper:paper_10647554_v20_n4_p309_Ercoli2023-06-08T16:04:11Z The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja) Ercoli, Marcos Darío Echarri, Sebastián Busker, Felipe Turazzini, Guillermo Fidel Galictis Hind limb Lumbar region Mustelidae Myology Tail Galictis Galictis cuja Mustelidae Mustelids are a morphofunctionally diversified group. However, there are no descriptions of the postcranial musculature of South American mustelid species except for some comments from the 19th century. Here, we present the first description of the myology of the hind limbs, and lumbar, sacral, and caudal regions of the lesser grison (Galictis cuja), a short-legged South American mustelid, including muscle maps and weight data. We interpret the function and the evolution of several muscular features within a comparative framework and through the optimization of these traits onto a phylogeny. The configuration of the axial musculature (e.g., m. quadratus lumborum with short bundles, heavy iliocostalis, and forward originated sacrocaudalis dorsalis) and the presence of strong ankle musculature are features shared with mustelines and, to a lesser degree, with other musteloids. These could be related to a high mobility of the axial skeleton and strong control of the movement of the ankle joint, in relation to the acquisition of epigean bounding gaits, a crouched locomotion, and enhanced maneuverability inside burrows. We recorded many phylogenetically significant traits, shared with other arctoids (e.g., subdivision of m. gluteus profundus and semimembranosus, presence of a single belly for m. sartorius, and absence of articularis coxae) or exclusively musteloids (e.g., frequent fusion between m. piriformis and gluteus medius). Some features (e.g., restricted origin of the caudal belly of the m. semitendinosus, absence of gluteofemoralis, and unusually complex fibularis brevis) seem to be derived conditions acquired in some mustelid clades. Our results sustain the value of myological data for functional and phylogenetic studies. © 2012 Springer Science+Business Media New York. Fil:Ercoli, M.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Echarri, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Busker, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Turazzini, G.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10647554_v20_n4_p309_Ercoli http://hdl.handle.net/20.500.12110/paper_10647554_v20_n4_p309_Ercoli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Galictis
Hind limb
Lumbar region
Mustelidae
Myology
Tail
Galictis
Galictis cuja
Mustelidae
spellingShingle Galictis
Hind limb
Lumbar region
Mustelidae
Myology
Tail
Galictis
Galictis cuja
Mustelidae
Ercoli, Marcos Darío
Echarri, Sebastián
Busker, Felipe
Turazzini, Guillermo Fidel
The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja)
topic_facet Galictis
Hind limb
Lumbar region
Mustelidae
Myology
Tail
Galictis
Galictis cuja
Mustelidae
description Mustelids are a morphofunctionally diversified group. However, there are no descriptions of the postcranial musculature of South American mustelid species except for some comments from the 19th century. Here, we present the first description of the myology of the hind limbs, and lumbar, sacral, and caudal regions of the lesser grison (Galictis cuja), a short-legged South American mustelid, including muscle maps and weight data. We interpret the function and the evolution of several muscular features within a comparative framework and through the optimization of these traits onto a phylogeny. The configuration of the axial musculature (e.g., m. quadratus lumborum with short bundles, heavy iliocostalis, and forward originated sacrocaudalis dorsalis) and the presence of strong ankle musculature are features shared with mustelines and, to a lesser degree, with other musteloids. These could be related to a high mobility of the axial skeleton and strong control of the movement of the ankle joint, in relation to the acquisition of epigean bounding gaits, a crouched locomotion, and enhanced maneuverability inside burrows. We recorded many phylogenetically significant traits, shared with other arctoids (e.g., subdivision of m. gluteus profundus and semimembranosus, presence of a single belly for m. sartorius, and absence of articularis coxae) or exclusively musteloids (e.g., frequent fusion between m. piriformis and gluteus medius). Some features (e.g., restricted origin of the caudal belly of the m. semitendinosus, absence of gluteofemoralis, and unusually complex fibularis brevis) seem to be derived conditions acquired in some mustelid clades. Our results sustain the value of myological data for functional and phylogenetic studies. © 2012 Springer Science+Business Media New York.
author Ercoli, Marcos Darío
Echarri, Sebastián
Busker, Felipe
Turazzini, Guillermo Fidel
author_facet Ercoli, Marcos Darío
Echarri, Sebastián
Busker, Felipe
Turazzini, Guillermo Fidel
author_sort Ercoli, Marcos Darío
title The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja)
title_short The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja)
title_full The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja)
title_fullStr The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja)
title_full_unstemmed The Functional and Phylogenetic Implications of the Myology of the Lumbar Region, Tail, and Hind Limbs of the Lesser Grison (Galictis cuja)
title_sort functional and phylogenetic implications of the myology of the lumbar region, tail, and hind limbs of the lesser grison (galictis cuja)
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10647554_v20_n4_p309_Ercoli
http://hdl.handle.net/20.500.12110/paper_10647554_v20_n4_p309_Ercoli
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