Morfología y dimorfismo sexual de la pelvis de Pitymys duodecimcostatus

Abstract

The pelvis of 87 specimens (39 females and 48 males) of Pitymys duodecimcostatus were examined to find morphological and biometrical features allowing the identification and sex determination of remains found in owl pellets. The results obtained were tested by applying them to a sample of 62 pelvis from Barn OwI pellets. Species determination was easily done in all instances since shape of pelvis of Pitymys (figura 1) is quite distinct from those of other coexisting rodent species (mostIy Muridae). On the basis of mensural criteria, sex determination was achieved for the 87,1% of the pelvis in the sample, then the criteria obtained appear to be reliable.