Relative tooth size at birth in primates
Life history correlates
Bibliographic Data
OBJECTIVES: Dental eruption schedules have been closely linked to life history variables. Here we examine a sample of 50 perinatal primates (28 species) to determine whether life history traits correlate with relative tooth size at birth. MATERIALS AND METHODS: ) of the upper jaw were measured and residuals from cranial length were calculated with least squares regressions to obtain relative dental volumes (RDVs). RESULTS: Relative dental volumes of deciduous or permanent teeth have an unclear relationship with relative neonatal mass in all primates. Relative palatal length (RPL), used as a proxy for midfacial size, is significantly, positively correlated with larger deciduous and permanent postcanine teeth. However, when strepsirrhines alone are examined, larger RPL is correlated with smaller RDV of permanent teeth. In the full sample, RDVs of deciduous premolars are significantly negatively correlated with relative gestation length (RGL), but have no clear relationship with relative weaning age. RDVs of molars lack a clear relationship with RGL; later weaning is associated with larger molar RDV, although correlations are not significant. When strepsirrhines alone are analyzed, clearer trends are present: longer gestations or later weaning are associated with smaller deciduous and larger permanent postcanine teeth (only gestational length correlations are significant). DISCUSSION: Our results indicate a broad trend that primates with the shortest RGLs precociously develop deciduous teeth; in strepsirrhines, the opposite trend is seen for permanent molars. Anthropoids delay growth of permanent teeth, while strepsirrhines with short RGLs are growing replacement teeth concurrently. A comparison of neonatal volumes with existing information on extent of cusp mineralization indicates that growth of tooth germs and cusp mineralization may be selected for independently
Animal science · Biology · Deciduous · Deciduous teeth · Mandibular second molar · Molar · Permanent teeth · Weaning · Bone and Dental Protein Studies · dental development and anomalies · Dentistry · Ecology · Forensic Anthropology and Bioarchaeology Studies · Medicine · Orthodontics · Physiology
Age differences in locomotion of two subtropical galaginae
Life history of yellow baboons
Phylogenetic Analysis and Comparative Data
Dental Development as a Measure of Life History in Primates
Social influences on foraging behavior in young nonhuman primates
Why do female primates have such long lifespans and so few babies? or Life in the slow lane
The Brain and Its Role in the Phylogenetic Transformation of the Human Skull
Teeth, brains, and primate life histories
Ages of eruption of primate teeth
Milk at altitude
Eruption and decay of the permanent teeth in primates
Pattern and pace of dental eruption in Tarsius
The effect of data provenance on estimates of gestation length in African and Asian colobines
Rotation of the otic capsule in bipedal rats
Dental topography of platyrrhines and prosimians
Molar size and diet in the Strepsirrhini
Comparison of hind limb muscle mass in neonate and adult prosimian primates
Does space in the jaw influence the timing of molar crown initiation? A model using baboons (Papio anubis) and great apes (Pan troglodytes, Pan paniscus)
Molar scaling in strepsirrhine primates
Ontogenetic correlates of diet in Malagasy lemurs
Primate Life Histories and Socioecology
| Citation velocity | historical |
|---|---|
| Highly cited | No |