INVESTIGADORES
SUAREZ Olga Virginia
artículos
Título:
Sexual dimorphism and age variation in Oxymycterus rutilans
Autor/es:
SUAREZ O.V; CUETO G. R; KRAVETZ, F.O
Revista:
MASTOZOOLOGÃA NEOTROPICAL
Editorial:
Sociedad Argentina para el Estudio de Mamiferos
Referencias:
Año: 1998 vol. 5 p. 5 - 12
ISSN:
0327-9383
Resumen:
ABSTRACT: Sexual dimorphism in cranial morphology was studied in a population of
Oxymycterus rutilans from the Paraná Delta, Argentina. Individuals were assigned to three
categories on the basis of toothwear. Condylobasal length, length of the diastema, maximum
incisor width and length of the maxillary molar row provided quantifiable differences among
age groups. The stepwise discriminant analysis showed sexual dimorphism in the cranial
dimensions for all age classes of O. rutilans specimens. Cranial length measurements
maximised the differences between sexes, with males being longer than females for all age
classes.
Oxymycterus rutilans from the Paraná Delta, Argentina. Individuals were assigned to three
categories on the basis of toothwear. Condylobasal length, length of the diastema, maximum
incisor width and length of the maxillary molar row provided quantifiable differences among
age groups. The stepwise discriminant analysis showed sexual dimorphism in the cranial
dimensions for all age classes of O. rutilans specimens. Cranial length measurements
maximised the differences between sexes, with males being longer than females for all age
classes.
Sexual dimorphism in cranial morphology was studied in a population of
Oxymycterus rutilans from the Paraná Delta, Argentina. Individuals were assigned to three
categories on the basis of toothwear. Condylobasal length, length of the diastema, maximum
incisor width and length of the maxillary molar row provided quantifiable differences among
age groups. The stepwise discriminant analysis showed sexual dimorphism in the cranial
dimensions for all age classes of O. rutilans specimens. Cranial length measurements
maximised the differences between sexes, with males being longer than females for all age
classes.