The effects of natural substrate discontinuities on the quadrupedal gait kinematics of free‐ranging Saimiri sciureus
The effects of natural substrate discontinuities on the quadrupedal gait kinematics of free‐ranging Saimiri sciureus
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自然基质不连续性对自由放养的 Saimiri sciureus 四足步态运动学的影响
DOI:
10.1002/ajp.23055
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发表时间:
2019
影响因子:
2.4
通讯作者:
Young, Jesse W.
中科院分区:
文献类型:
--
作者:
McNamara, Allison;Dunham, Noah T.;Shapiro, Liza J.;Young, Jesse W.
Wild primates encounter complex matrices of substrates that differ in size, orientation, height, and compliance, and often move on multiple, discontinuous substrates within a single bout of locomotion. Our current understanding of primate gait is limited by artificial laboratory settings in which primate quadrupedal gait has primarily been studied. This study analyzes wildSaimiri sciureus(common squirrel monkey) gait on discontinuous substrates to capture the realistic effects of the complex arboreal habitat on walking kinematics. We collected high‐speed video footage at Tiputini Biodiversity Station, Ecuador between August and October 2017. Overall, the squirrel monkeys used more asymmetrical walking gaits than symmetrical gaits, and specifically asymmetrical lateral sequence walking gaits when moving across discontinuous substrates. When individuals used symmetrical gaits, they used diagonal sequence gaits more than lateral sequence gaits. In addition, individuals were more likely to change their footfall sequence during strides on discontinuous substrates. Squirrel monkeys increased the time lag between touchdowns both of ipsilaterally paired limbs (pair lag) and of the paired forelimbs (forelimb lag) when walking across discontinuous substrates compared to continuous substrates. Results indicate that gait flexibility and the ability to alter footfall patterns during quadrupedal walking may be critical for primates to safely move in their complex arboreal habitats. Notably, wild squirrel monkey quadrupedalism is diverse and flexible with high proportions of asymmetrical walking. Studying kinematics in the wild is critical for understanding the complexity of primate quadrupedalism.
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影响因子:
3.2
作者:
J. Nyakatura;E. Heymann
通讯作者:
E. Heymann
影响因子:
2.8
作者:
S. Thorpe;R. Crompton
通讯作者:
R. Crompton
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
D. Guillot
通讯作者:
D. Guillot
影响因子:
2.8
作者:
W. S. Mcgraw
通讯作者:
W. S. Mcgraw
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
D. Youlatos;J. Gasc
通讯作者:
J. Gasc