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Differences Among Species in Compact Bone Tissue Microstructure of Mammalian Skeleton: Use of a Discriminant Function Analysis for Species Identification

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ABSTRACT:

In order to develop an identification key for distinguishing between several mammalian species, bone structure of their compact bone tissue was analyzed using qualitative and quantitative characteristics. Ninety femora of adult male humans, pigs, cows, sheep, rabbits, and rats were studied. The average area, perimeter, minimum, and maximum diameter of 1863 Haversian canals and 1863 secondary osteons were measured using a digital image device. The observed data were first used to evaluate inter- and intraspecies diversity. After that, we applied a discriminant function analysis for differentiation of the species by these variables. Classification functions for investigated species give cross-validated correct classification rates for 76.17% of cases. This percentage value can be increased by integrating conclusions from the qualitative analysis.
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Keywords: bone tissue; discriminant function analysis; forensic anthropology; forensic science; histomorphometry; human versus nonhuman origin

Document Type: Research Article

Affiliations: 1: Department of Zoology and Anthropology, Constantine the Philosopher University, Nábrez˘ie mládez˘e 91, 949 74 Nitra, Slovak Republic. 2: Institute of Zoology and Anthropology, Georg-August University, Bürgerstrasse 50, 37 073 Göttingen, Germany. 3: Department of Botany and Genetics, Constantine the Philosopher University, Nábrez˘ie mládez˘e 91, 949 74 Nitra, Slovak Republic.

Publication date: 2006-11-01

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