Ulnar dimensions and fossoriality in armadillos

Ulnar dimensions were measured in 14 species of armadillos (Xenarthra: Dasypodidae). An index of fossorial ability (IFA) was constructed, relating the length of the olecranon process to the remaining length of the ulna. For comparative purposes, the same measurements were taken in 14 other species o...

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Autores principales: Vizcaíno, Sergio Fabián, Fariña, Richard A., Mazzetta, Gerardo V.
Formato: Articulo
Lenguaje:Inglés
Publicado: 1999
Materias:
Paleontología
Armadillos
Dasypodidae
Fossoriality
Ulna length
Olecranon length
Body size
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122992
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-122992
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Armadillos
Dasypodidae
Fossoriality
Ulna length
Olecranon length
Body size
spellingShingle Paleontología
Armadillos
Dasypodidae
Fossoriality
Ulna length
Olecranon length
Body size
Vizcaíno, Sergio Fabián
Fariña, Richard A.
Mazzetta, Gerardo V.
Ulnar dimensions and fossoriality in armadillos
topic_facet Paleontología
Armadillos
Dasypodidae
Fossoriality
Ulna length
Olecranon length
Body size
description Ulnar dimensions were measured in 14 species of armadillos (Xenarthra: Dasypodidae). An index of fossorial ability (IFA) was constructed, relating the length of the olecranon process to the remaining length of the ulna. For comparative purposes, the same measurements were taken in 14 other species of mostly South American mammals belonging to 3 orders and 11 families. The fossorial habits of these mammals were classified into 3 categories: (1) species mostly cursorial and non-digging; (2) species that often dig, but to which digging plays no essential part in their alimentary strategy and are not burrowers; and (3) species that are burrowers. IFA means of the studied mammal orders were compared using one-way analysis of variance on log-transformed data. Bivariate size allometry between ulnar dimensions and body mass was assessed by fitting (least squares and geometric mean) linear regressions of log-transformed data. It is concluded that the IFA discriminates among the species according to their fossorial habits within orders, but it is not equally useful in distinguishing fossorial species between orders. In armadillos, the relationships between ulnar dimensions and body mass are isometrical. Finally, the IFA is independent of body size.
format Articulo
Articulo
author Vizcaíno, Sergio Fabián
Fariña, Richard A.
Mazzetta, Gerardo V.
author_facet Vizcaíno, Sergio Fabián
Fariña, Richard A.
Mazzetta, Gerardo V.
author_sort Vizcaíno, Sergio Fabián
title Ulnar dimensions and fossoriality in armadillos
title_short Ulnar dimensions and fossoriality in armadillos
title_full Ulnar dimensions and fossoriality in armadillos
title_fullStr Ulnar dimensions and fossoriality in armadillos
title_full_unstemmed Ulnar dimensions and fossoriality in armadillos
title_sort ulnar dimensions and fossoriality in armadillos
publishDate 1999
url http://sedici.unlp.edu.ar/handle/10915/122992
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AT farinaricharda ulnardimensionsandfossorialityinarmadillos
AT mazzettagerardov ulnardimensionsandfossorialityinarmadillos
bdutipo_str Repositorios
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