Evolution of grasping among anthropoids.
J Evol Biol
; 21(6): 1732-43, 2008 Nov.
Article
en En
| MEDLINE
| ID: mdl-18713244
ABSTRACT
The prevailing hypothesis about grasping in primates stipulates an evolution from power towards precision grips in hominids. The evolution of grasping is far more complex, as shown by analysis of new morphometric and behavioural data. The latter concern the modes of food grasping in 11 species (one platyrrhine, nine catarrhines and humans). We show that precision grip and thumb-lateral behaviours are linked to carpus and thumb length, whereas power grasping is linked to second and third digit length. No phylogenetic signal was found in the behavioural characters when using squared-change parsimony and phylogenetic eigenvector regression, but such a signal was found in morphometric characters. Our findings shed new light on previously proposed models of the evolution of grasping. Inference models suggest that Australopithecus, Oreopithecus and Proconsul used a precision grip.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Haplorrinos
/
Fuerza de la Mano
/
Evolución Biológica
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Animals
/
Child, preschool
/
Humans
Idioma:
En
Revista:
J Evol Biol
Asunto de la revista:
BIOLOGIA
Año:
2008
Tipo del documento:
Article
País de afiliación:
Francia