Prevalence and Etiology of Linear Enamel Hypoplasia in Monkeys and Apes from Asia and Africa

@article{GuatelliSteinberg2000PrevalenceAE,
  title={Prevalence and Etiology of Linear Enamel Hypoplasia in Monkeys and Apes from Asia and Africa},
  author={Debbie Guatelli‐Steinberg and Mark F. Skinner},
  journal={Folia Primatologica},
  year={2000},
  volume={71},
  pages={115 - 132}
}
Ninety-seven specimens of sympatric monkeys and apes from East Malaysia and 115 monkeys and apes from West Africa are examined in order to evaluate the magnitude and nature of the great ape-monkey linear enamel hypoplasia (LEH) ‘dichotomy’. This study demonstrates that great apes from both regions have a higher incidence of LEH and repetitive LEH than do gibbons and monkeys. However, the authors find that the dichotomy is not as clear-cut as previous research suggests, since some monkey samples… 
Linear enamel hypoplasia in the great apes: analysis by genus and locality.
TLDR
A range of variation for the great apes in enamel hypoplasia frequencies is found when taxon and locality are considered, and it is likely that both biological and environmental factors influence the high frequencies of enamel Hypoplasia exhibited in the great ape.
Linear enamel hypoplasia in gibbons (Hylobates lar carpenteri).
TLDR
The expression of linear enamel hypoplasia (LEH), a sensitive dental indicator of physiological stress, in Thailand gibbons is described and aspects of crown morphology, perikymata prominence/spacing, enamel thickness, and crown formation spans are potential causes of taxonomic variation in the intertooth distribution.
Analysis and significance of linear enamel hypoplasia in Plio-Pleistocene hominins.
TLDR
It was additionally found that the average number of perikymata within Australopithecus defects is statistically significantly greater than it is in Paranthropus, thus explaining why Par anthropus defects are not wider than those of Australopitalcus.
A probable genetic origin for pit defects on the molars of Paranthropus robustus
TLDR
P. robustus has much higher rates of pitting defects, with 47% of deciduous teeth and 14% of permanent teeth affected, relative to all other hominin teeth combined; none of the extant primate samples evidence comparable rates.
Life history, enamel formation, and linear enamel hypoplasia in the Ceboidea.
TLDR
The relationship between maturation length and LEH frequency within the Ceboidea is explored and a related hypothesis linking the spacing of perikymata, which is influenced by enamel extension rates, is examined.
Hypothesis for the causes and periodicity of repetitive linear enamel hypoplasia in large, wild African (Pan troglodytes and Gorilla gorilla) and Asian (Pongo pygmaeus) apes.
TLDR
It is concluded that stress in the form of LEH commences as early as 2.5 years of age in all taxa and lasts for several years, and even longer in orangutans, and that this seasonal stress is sufficiently common and of long duration that it may reflect significant stress in recent and, inferentially, fossil apes.
Ecological stress and linear enamel hypoplasia in Cebus.
TLDR
The results indicate that levels of physiological stress can differ among environments and that habitat and temperature, but not precipitation, may be driving the difference in stress levels among environments.
Enamel hypoplasia in the deciduous teeth of early Miocene catarrhines: evidence of perinatal physiological stress.
  • J. Lukacs
  • Medicine
    Journal of human evolution
  • 2001
TLDR
An approximately 17-23 Ma antiquity for EH among early catarrhines is established and it is suggested that the neonatal stage of ontogenetic development was sufficiently stressful physiologically to produce disruption in amelogenesis.
Macroscopic and microscopic analyses of linear enamel hypoplasia in Plio-Pleistocene South African hominins with respect to aspects of enamel development and morphology.
TLDR
This study uses macroscopic and microscopic methods to analyze the expression of linear enamel hypoplasia (LEH) in Plio-Pleistocene South African hominins with respect to differences between Paranthropus and Australopithecus in aspects of enamel development and morphology that are thought to influence LEH expression.
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