How to Determine the Age of the Golden Jackal Canis aureus by Cutting-teeth Atrition and Ossification
of Basal Cranial Synchondroses
E. RAYCHEV1, R. DIMITROV2, T. DIMOVA1 and Hr. HRISTOV2
1 Thracian University, Faculty of Agriculture and Animal Husbandry, Department of Domestic Animal Anatomy, BG-6000 Stara Zagora, Bulgaria
2 Thracian University, Faculty of Veterinary Medicine, Department of Cytology, Histology and Embryology, BG-6000 Stara Zagora, Bulgaria
RAYCHEV, E., R. DIMITROV, T. DIMOVA and Hr. HRISTOV, 1999. How to determine the age of the golden jackal Canis aureus by cutting-teeth atrition and ossification of basal cranial synchondroses. Bulg. J. Agric. Sci., 5: 807-810
This is a study of the applicability of two methods of age determination of the golden jackal Canis aureus, namely: by the atrition rate of upper-jaw cutting-teeth and the ossification of basal cranial synchondroses. Craniums of 49 jackals were used distributed into four age groups: I – up to 1 year; II – between 1 and 2 years; III – between 2 and 3 years and IV – between 3 and 4 years. The first sign of upper cutting teeth atrition appears after the first year and the characteristic fleur-de-lys shape is lost after the 3rd year. Both basal synchondroses can be open up to 1 year of age, BOBS showing a tendency to ossification. The latter is completely ossified up to 2 years of age and PSBS – after 3 years.
Key words: golden jackal, cutting teeth, basal cranial synchondroses, ossification