Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea)
Histochemical and morphometric analyses were performed to characterize the fibre-type composition of two forelimb muscles of the South American subterranean rodent Ctenomys talarum. The studied muscles were the triceps lateralis, an extensor of the elbow, and the teres major, a flexor of the shoulde...
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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03402096_v41_n5_p317_Alvarez http://hdl.handle.net/20.500.12110/paper_03402096_v41_n5_p317_Alvarez |
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paper:paper_03402096_v41_n5_p317_Alvarez2023-06-08T15:33:53Z Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea) animal article chemistry classification cytochemistry energy metabolism female forelimb glycolysis histology male muscle contraction physiology rodent skeletal muscle ultrastructure Animals Energy Metabolism Female Forelimb Glycolysis Histocytochemistry Male Muscle Contraction Muscle Fibers, Skeletal Muscle, Skeletal Rodentia Ctenomys talarum Mammalia Rodentia Histochemical and morphometric analyses were performed to characterize the fibre-type composition of two forelimb muscles of the South American subterranean rodent Ctenomys talarum. The studied muscles were the triceps lateralis, an extensor of the elbow, and the teres major, a flexor of the shoulder. It was found that these muscles had an elevated proportion of fast oxidative-glycolytic (FOG) fibres, and lower proportions of slow oxidative (SO) and fast glycolytic (FG) fibres. This composition probably qualifies the teres major and triceps muscles to perform the sustained effort required in tunnelling excavation. The results were discussed considering published data on fibre-type composition of mammals having different modes of life and digging behaviour. We here suggest that C. talarum has the potential of generating forces linked to rapid, powerful movements during sustained periods by means of an elevated proportion of FOG fibres, together with osteological changes that result in a great mechanical advantage of the forelimb muscles. © 2012 Blackwell Verlag GmbH. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03402096_v41_n5_p317_Alvarez http://hdl.handle.net/20.500.12110/paper_03402096_v41_n5_p317_Alvarez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
animal article chemistry classification cytochemistry energy metabolism female forelimb glycolysis histology male muscle contraction physiology rodent skeletal muscle ultrastructure Animals Energy Metabolism Female Forelimb Glycolysis Histocytochemistry Male Muscle Contraction Muscle Fibers, Skeletal Muscle, Skeletal Rodentia Ctenomys talarum Mammalia Rodentia |
| spellingShingle |
animal article chemistry classification cytochemistry energy metabolism female forelimb glycolysis histology male muscle contraction physiology rodent skeletal muscle ultrastructure Animals Energy Metabolism Female Forelimb Glycolysis Histocytochemistry Male Muscle Contraction Muscle Fibers, Skeletal Muscle, Skeletal Rodentia Ctenomys talarum Mammalia Rodentia Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea) |
| topic_facet |
animal article chemistry classification cytochemistry energy metabolism female forelimb glycolysis histology male muscle contraction physiology rodent skeletal muscle ultrastructure Animals Energy Metabolism Female Forelimb Glycolysis Histocytochemistry Male Muscle Contraction Muscle Fibers, Skeletal Muscle, Skeletal Rodentia Ctenomys talarum Mammalia Rodentia |
| description |
Histochemical and morphometric analyses were performed to characterize the fibre-type composition of two forelimb muscles of the South American subterranean rodent Ctenomys talarum. The studied muscles were the triceps lateralis, an extensor of the elbow, and the teres major, a flexor of the shoulder. It was found that these muscles had an elevated proportion of fast oxidative-glycolytic (FOG) fibres, and lower proportions of slow oxidative (SO) and fast glycolytic (FG) fibres. This composition probably qualifies the teres major and triceps muscles to perform the sustained effort required in tunnelling excavation. The results were discussed considering published data on fibre-type composition of mammals having different modes of life and digging behaviour. We here suggest that C. talarum has the potential of generating forces linked to rapid, powerful movements during sustained periods by means of an elevated proportion of FOG fibres, together with osteological changes that result in a great mechanical advantage of the forelimb muscles. © 2012 Blackwell Verlag GmbH. |
| title |
Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea) |
| title_short |
Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea) |
| title_full |
Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea) |
| title_fullStr |
Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea) |
| title_full_unstemmed |
Histochemical and Morphometric Analyses of the Musculature of the Forelimb of the Subterranean Rodent Ctenomys talarum (Octodontoidea) |
| title_sort |
histochemical and morphometric analyses of the musculature of the forelimb of the subterranean rodent ctenomys talarum (octodontoidea) |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03402096_v41_n5_p317_Alvarez http://hdl.handle.net/20.500.12110/paper_03402096_v41_n5_p317_Alvarez |
| _version_ |
1768541939868631040 |