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dc.contributor.author
Vassallo, Aldo Iván
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dc.contributor.author
Rocha Barbosa, Oscar
dc.date.available
2021-03-25T20:06:03Z
dc.date.issued
2020-03
dc.identifier.citation
Vassallo, Aldo Iván; Rocha Barbosa, Oscar; Limb bone stress in the mara dolichotis patagonum (Caviomorpha; caviidae; dolichotinae); Associazione Teriologica Italiana; Hystrix; 31; 1; 3-2020; 1-5
dc.identifier.issn
0394-1914
dc.identifier.uri
http://hdl.handle.net/11336/128963
dc.description.abstract
The mara Dolichotis patagonum (Caviomorpha, Caviidae) is probably the extant rodent with the most pronounced postcranial specializations for fast locomotion. When running the species can reach a speed of ~40 km/h. It has been suggested that its body posture and limb bones show evolutionary parallelism regarding small-sized artiodactyl species. Due to its elongated limbs and relatively large body mass (average 8 kg) compared to other rodents, its limb bones may experi-ence large loads at high speeds. Using kinematic data from high speed video films and skeletal dimensions of museum specimens, ground reaction forces and stresses acting on the humerus and tibia during different gaits were estimated. Values of bending stress obtained for the tibia were greater than those for the humerus during walking, gallop and “pronk”. The stress experienced by the tibia when running doubled the value obtained when walking (54.5 vs. 26.1 MPa, respec-tively). Estimated bone safety factors were less than half during fast locomotion (3.1) compared to walking (6.4). It is discussed how maras’ body posture and skeletal dimensions affect bone stress experienced during locomotion.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Associazione Teriologica Italiana
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
BODY POSTURE
dc.subject
LOCOMOTION
dc.subject
MAMMAL GAIT
dc.subject
RODENTIA
dc.subject
TIBIA
dc.subject.classification
Zoología, Ornitología, Entomología, Etología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Limb bone stress in the mara dolichotis patagonum (Caviomorpha; caviidae; dolichotinae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-02-18T15:18:59Z
dc.identifier.eissn
1825-5272
dc.journal.volume
31
dc.journal.number
1
dc.journal.pagination
1-5
dc.journal.pais
Italia
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dc.description.fil
Fil: Vassallo, Aldo Iván. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
dc.description.fil
Fil: Rocha Barbosa, Oscar. Universidade do Estado de Rio do Janeiro; Brasil
dc.journal.title
Hystrix
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.4404/hystrix-00297-2020
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.italian-journal-of-mammalogy.it/Limb-bone-stress-in-the-mara-Dolichotis-patagonum-Caviomorpha-Caviidae-Dolichotinae,120328,0,2.html
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