Craniometric differentiation of golden jackals (Canis aureus L., 1758) in Bulgaria
2012
Stoyanov, S., University of Forestry, Sofia (Bulgaria). Department of Wildlife Management
The skull morph metrics of golden jackal in Bulgaria was investigated using a collection of 293 skulls, 223 of them with known age and sex. Sixty-three measurements were taken for each specimen. Comparative variety and multivariate statistical analyses included standard statistics, t-test, QQ plots, Shapiro Wilk test, principal component analysis and discriminate analysis. All measurements were normally distributed. The skulls of male jackals were bigger than females, but with great overlap, in particular in juveniles and sub adults. The discriminate function classified correctly 97.3% of male and 100% of female jackals. The PCA revealed differences between skulls of Bulgarian and Dalmatian jackals, the skulls of latter being wider and shorter. Different criteria for golden jackal trophy awards could be suggested for adoption by CIC. Golden medal should receive trophies with score 26.5 CIC points, silver medal – 26, and bronze -25.5.
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