Structure and function in armadillo limbs (Mammalia: Xenarthra: Dasypodidae)
Identifieur interne : 008386 ( Main/Exploration ); précédent : 008385; suivant : 008387Structure and function in armadillo limbs (Mammalia: Xenarthra: Dasypodidae)
Auteurs : S. F. Vizcaíno [Argentine] ; N. Milne [Australie]Source :
- Journal of Zoology [ 0952-8369 ] ; 2002-05.
English descriptors
- KwdEn :
- Amnh, Armadillo, Armadillo limbs, Body mass, Body mass estimates, Brachial index, Cabassous, Centralis, Chacoensis, Chlamyphorini, Chlamyphorus, Cursorial, Dasypodini, Dasypus, Euphractini, Farina, Femoral, Femur, Fmnh, Forelimb, Forelimb indices, Fossorial, Fossorial ability, Hindlimb, Hindlimb indices, Humeral, Humeral length, Hybridus, Intermembral index, Kappleri, Larger animals, Limb proportions, Macn, Mammal, Mammalia, Matacus, Maximus, Mechanical advantage, Natural history, Nmnh, Novemcinctus, Olecranon, Olecranon length, Other armadillos, Other hand, Other mammals, Other tribes, Pichiy, Previous study, Priodontini, Proximal, Proximal femoral length, Proximal humeral length, Proximal point, Sexcinctus, Similar values, Smithsonian institution press, Specialized diggers, Species differences, Standard deviations, Tolypeutes, Tolypeutes matacus, Tolypeutini, Tribe, Truncatus, Ulna, Ulnar length, Unicinctus, Vellerosus, Villosus.
- Teeft :
- Amnh, Armadillo, Armadillo limbs, Body mass, Body mass estimates, Brachial index, Cabassous, Centralis, Chacoensis, Chlamyphorini, Chlamyphorus, Cursorial, Dasypodini, Dasypus, Euphractini, Farina, Femoral, Femur, Fmnh, Forelimb, Forelimb indices, Fossorial, Fossorial ability, Hindlimb, Hindlimb indices, Humeral, Humeral length, Hybridus, Intermembral index, Kappleri, Larger animals, Limb proportions, Macn, Mammal, Mammalia, Matacus, Maximus, Mechanical advantage, Natural history, Nmnh, Novemcinctus, Olecranon, Olecranon length, Other armadillos, Other hand, Other mammals, Other tribes, Pichiy, Previous study, Priodontini, Proximal, Proximal femoral length, Proximal humeral length, Proximal point, Sexcinctus, Similar values, Smithsonian institution press, Specialized diggers, Species differences, Standard deviations, Tolypeutes, Tolypeutes matacus, Tolypeutini, Tribe, Truncatus, Ulna, Ulnar length, Unicinctus, Vellerosus, Villosus.
Abstract
Armadillos are a very diverse group ranging from non‐fossorial Tolypeutini through to the powerful diggers like the giant armadillo Priodontes maximus to the totally subterranean Chlamyphorini. A previous study demonstrated a close relationship between the relative length of the olecranon of the ulna (index of fossorial ability, IFA) and the fossorial ability of armadillos. This study examines a wide range of limb proportions to explore the biomechanical correlates with fossorial ability. The study demonstrates that the indices of the forelimb (brachial index, shoulder moment index and IFA) do correlate well with digging habits, but also reveals some interesting exceptions, particularly in the most fossorial and most cursorial forms. On the other hand, the hindlimb indices apparently do not correlate with digging habits, but seem to be influenced more by body size. The correlations among the forelimb indices are quite strong and positive but correlations between forelimb and hindlimb indices are negative or very low. It is apparent that there is still much to be learned about structure and function in armadillos.
Url:
DOI: 10.1017/S0952836902000717
Affiliations:
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A previous study demonstrated a close relationship between the relative length of the olecranon of the ulna (index of fossorial ability, IFA) and the fossorial ability of armadillos. This study examines a wide range of limb proportions to explore the biomechanical correlates with fossorial ability. The study demonstrates that the indices of the forelimb (brachial index, shoulder moment index and IFA) do correlate well with digging habits, but also reveals some interesting exceptions, particularly in the most fossorial and most cursorial forms. On the other hand, the hindlimb indices apparently do not correlate with digging habits, but seem to be influenced more by body size. The correlations among the forelimb indices are quite strong and positive but correlations between forelimb and hindlimb indices are negative or very low. It is apparent that there is still much to be learned about structure and function in armadillos.</div></front></TEI><affiliations><list><country><li>Argentine</li><li>Australie</li></country></list><tree><country name="Argentine"><noRegion><name sortKey="Vizcaino, S F" sort="Vizcaino, S F" uniqKey="Vizcaino S" first="S. F." last="Vizcaíno">S. F. Vizcaíno</name></noRegion></country><country name="Australie"><noRegion><name sortKey="Milne, N" sort="Milne, N" uniqKey="Milne N" first="N." last="Milne">N. Milne</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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