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Locomotor adaptations within the Cercopithecus Genus: a multivariate approach.

B J Manaster

    American Journal of Physical Anthropology
    |February 1, 1979
    PubMed
    Summary
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    This study used multivariate analysis to find subtle morphological differences in primate locomotion. These adaptations reveal fine details of how arboreal and terrestrial primates move.

    Area of Science:

    • Primate Paleontology
    • Comparative Anatomy
    • Evolutionary Biology

    Background:

    • Multivariate analysis is a powerful tool for studying primate locomotor differentiation using skeletal dimensions.
    • Previous studies have successfully clustered primate genera based on gross locomotor differences.
    • Understanding subtle morphological adaptations is key to differentiating arboreal and terrestrial primate behaviors.

    Purpose of the Study:

    • To investigate subtle morphological differences in locomotor behavior within the primate genus Cercopithecus.
    • To understand the morphological implications of arboreality and terrestriality in primates.
    • To analyze variations in movement patterns and their corresponding structural adaptations across different habitats.

    Main Methods:

    • Conducted multivariate analyses on 67 postcranial variables across seven species of the genus Cercopithecus.

    Related Experiment Videos

  • Developed methods to minimize size variance bias while incorporating a discrete size variable.
  • Transformed skeletal variables to detect subtle morphological variations related to locomotion.

    • Main Results:

    • Detected slight degrees of morphological variation within the Cercopithecus genus.
    • Identified interspecific groupings based on transformed skeletal variables.
    • These groupings correlate with differing locomotor behaviors, particularly in arboreal adaptations.

    Conclusions:

    • Subtle morphological variations in postcranial skeletons reflect fine-tuned locomotor adaptations in primates.
    • The study provides insights into the structural adaptations underlying primate movement strategies in varied habitats.
    • Multivariate analysis, with careful consideration of size effects, is effective for discerning fine locomotor adaptations.