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Related Experiment Video

Updated: May 30, 2026

Monitoring Fine and Associative Motor Learning in Mice Using the Erasmus Ladder
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Submaximal leaping in the grey mouse lemur.

Pierre Legreneur1, Karine M Monteil, Eric Pellé

  • 1Département Ecologie et Gestion de la Biodiversité, UMR 7179, Muséum National d'Histoire Naturelle, 55 rue Buffon, F-75231 Paris Cedex 5, France. pierre.legreneur@univ-lyon1.fr

Zoology (Jena, Germany)
|August 2, 2011
PubMed
Summary
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Arboreal animals like mouse lemurs use leaping for predator avoidance. This study found they optimize horizontal leaps for escape, relying on different joint extensions for varied heights.

Area of Science:

  • Biomechanics
  • Primate Locomotion
  • Animal Behavior

Background:

  • Leaping is a primary predator avoidance strategy for arboreal species.
  • Habitat structure, specifically landing substrate position, influences locomotor adaptations.
  • Understanding these adaptations is crucial for studying arboreal animal survival.

Purpose of the Study:

  • To characterize the locomotor adaptations of grey mouse lemurs during leaping.
  • To evaluate how landing substrate position affects leaping kinematics.
  • To determine the optimal leaping strategy for predator avoidance in this species.

Main Methods:

  • Inducing grey mouse lemurs (Microcebus murinus) to leap to various heights.
  • Utilizing uniplanar high-frequency cineradiography in the sagittal plane.

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  • Analyzing the push-off phase, focusing on center of mass (CoM) velocity vector and hind limb joint kinematics.

    • Main Results:

    • Leaping performance was primarily driven by hip and knee extension at lower heights.
    • Higher leaps showed increased ankle contribution.
    • The proximal-to-distal sequence of hind limb joints consistently controlled CoM velocity vector.
    • Optimal predator avoidance strategy favored leaping for horizontal distance over vertical height.

    Conclusions:

    • Grey mouse lemurs exhibit distinct kinematic strategies for different leaping heights.
    • Hind limb joint coordination is key to controlling leaping performance.
    • Horizontal leaping is the preferred strategy for predator escape in this arboreal primate.