Morphometric investigation of dental variation to examine genetic relationships between pig populations
This thesis investigates the metric and morphological variation in the mandibular cheek teeth of breeding groups of Sus scrofa, by addressing two main questions. 1, How much does tooth form vary within a breeding group. 2, Can an examination of such variation in tooth form be used to identify or distinguish breeding groups in modem and archaeological assemblages. Teeth are known to show high heritability in size and morphology which has implications for the study of intra- and inter-population variation in mammalian species. However sex, age and asymmetry can also affect dental variation so the detection of variation due to these factors is reviewed. Methods for recording metric and morphological details of molariform mandibular teeth were developed using modem material from known breeding groups. They included: measurements of tooth crown dimensions, records of the tooth occlusal outlines and occlusal area within, scores of minor morphological crown variants. Variation within the modem groups was consistent with that expected for a sample drawn from a single biological population. Variation within the Hakel sample resulting from tooth wear was statistically significant for crown lengths, and cervical lengths
Warman, Sylvia Mary
Zooarchaeology
Morphometric investigation of dental variation to examine genetic relationships between pig populations. This thesis investigates the metric and morphological variation in the mandibular cheek teeth of breeding groups of Sus scrofa, by addressing two main questions. 1, How much does tooth form vary within a breeding group. 2, Can an examination of such variation in tooth form be used to identify or distinguish breeding groups in modem and archaeological assemblages. Teeth are known to show high heritability in size and morphology which has implications for the study of intra- and inter-population variation in mammalian species. However sex, age and asymmetry can also affect dental variation so the detection of variation due to these factors is reviewed. Methods for recording metric and morphological details of molariform mandibular teeth were developed using modem material from known breeding groups. They included: measurements of tooth crown dimensions, records of the tooth occlusal outlines and occlusal area within, scores of minor morphological crown variants. Variation within the modem groups was consistent with that expected for a sample drawn from a single biological population. Variation within the Hakel sample resulting from tooth wear was statistically significant for crown lengths, and cervical lengths
morphometric investigation dental variation examine genetic relationship pig population investigates metric morphological_variation mandibular teeth breed group address two_main question much tooth form vary within breed group examination variation tooth form use_identify distinguish breeding group modem archaeological_assemblage teeth know show high size morphology implication study intra__inter population variation mammalian specie however sex_age asymmetry also affect dental variation detection variation due factor review methods record metric morphological detail mandibular teeth develop use modem material know breed group include measurement tooth crown dimension record tooth outline area within score minor morphological crown variant variation_within modem group consistent expect sample drawn single biological population variation_within sample result tooth_wear statistically_significant crown length length