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付卫伟, 王晓卫, 王程亮, 赵海涛, 任轶, 李保国. 2019: 年龄、性别与行为任务对野生川金丝猴手偏好的影响. 动物学研究, 40(2): 129-138. DOI: 10.24272/j.issn.2095-8137.2019.023
引用本文: 付卫伟, 王晓卫, 王程亮, 赵海涛, 任轶, 李保国. 2019: 年龄、性别与行为任务对野生川金丝猴手偏好的影响. 动物学研究, 40(2): 129-138. DOI: 10.24272/j.issn.2095-8137.2019.023
Wei-Wei Fu, Xiao-Wei Wang, Cheng-Liang Wang, Hai-Tao Zhao, Yi Ren, Bao-Guo Li. 2019: Effects of age, sex and manual task on hand preference in wild Rhinopithecus roxellana. Zoological Research, 40(2): 129-138. DOI: 10.24272/j.issn.2095-8137.2019.023
Citation: Wei-Wei Fu, Xiao-Wei Wang, Cheng-Liang Wang, Hai-Tao Zhao, Yi Ren, Bao-Guo Li. 2019: Effects of age, sex and manual task on hand preference in wild Rhinopithecus roxellana. Zoological Research, 40(2): 129-138. DOI: 10.24272/j.issn.2095-8137.2019.023

年龄、性别与行为任务对野生川金丝猴手偏好的影响

Effects of age, sex and manual task on hand preference in wild Rhinopithecus roxellana

  • 摘要: 树栖灵长类物种川金丝猴(Rhinopithecus roxellana)是研究非人灵长类肢体偏侧和探索肢体偏侧形成影响因素的理想模型。本次研究通过63只川金丝猴的自发行为任务(包括单手取食、双手取食、单手理毛和双手理毛)分析了年龄、性别和任务差异对川金丝猴手偏好的影响。本次研究发现群体水平的手偏好同时出现在双手协调(双手取食和双手理毛)和单手触达(单手取食)任务中。同时,本次研究并未发现性别对川金丝猴手偏好方向和强度的显著影响,而年龄对川金丝猴手偏好的影响也只出现在单手取食任务中。本次研究首次报道了双足姿势下川金丝猴取食行为的手偏好。结合之前关于本物种在四足姿势下取食行为的发现,本研究支持姿势和任务复杂程度是灵长类肢体偏侧进化的两个重要影响因素。

     

    Abstract: Golden snub-nosed monkeys (Rhinopithecus roxellana), as typical arboreal group-living Old World monkeys, provide an appropriate animal model to research manual laterality and explore the factors affecting hand preference in nonhuman primates. This study investigated hand preference based on 63 subjects and four spontaneous manual tasks (including unimanual and bimanual feeding and grooming), and assessed the effects of age, gender and type of task on handedness in R. roxellana. A population-level left-handedness was found not only in the bimanual coordinated tasks (bimanual feeding and grooming), but also in one unimanual reaching task (unimanual feeding). There were no significant differences between the sexes in either direction or strength of hand preference among any task. However, a significant difference between adults and juveniles was found in the unimanual feeding task. This is the first report on handedness in unimanual and bimanual feeding tasks that require bipedal posture in wild R. roxellana. Furthermore, this study demonstrated spontaneous feeding tasks reported previously only in the quadrupedal posture in this species, supporting the importance of factors such as posture and task complexity in the evolution of primate manual lateralization.

     

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