Two types of withdraw-to-eat movement related to food size in long-tailed macaques (Macaca fascicularis): insights into the evolution of the visual control of hand shaping in anthropoid primates

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dc.contributor.authorHirsche, Laurie A.
dc.contributor.authorCenni, Camilla
dc.contributor.authorLeca, Jean-Baptiste
dc.contributor.authorWhishaw, Ian
dc.date.accessioned2022-06-30T19:56:08Z
dc.date.available2022-06-30T19:56:08Z
dc.date.issued2022
dc.descriptionOpen access article. Creative Commons Attribution 3.0 Unported License (CC BY 3.0) appliesen_US
dc.description.abstractThe details of the evolutionary steps in the transition from nonvisual guidance of hand movements for feeding, as displayed by many non-primate species, to visual guidance of hand movements in primates are sparse. Contemporary theory holds that a small-bodied stem primate evolved visual control of the reach to guide a hand to obtain small insects and fruit items from the terminal branches of trees. The subsequent evolution of the visual control of hand and finger shaping movements of the grasp of anthropoids is uncertain. The present study finds that Balinese long-tailed macaques (Macaca fascicularis), video recorded while spontaneously eating at the Sacred Monkey Forest Sanctuary in Ubud in Indonesia, displayed two types of hand movements associated with two types of withdraw movements to place food items in the mouth. Small food items were brought directly to the mouth with hand supination, often with no visual monitoring after grasping. Large food items that protruded from the hand were visually monitored to orient the food item on the initial part of the withdraw but visually disengaged with a head movement and often a blink before the item was placed in the mouth. The results are discussed in relation to the idea that visual information related to orientating food items of varying sizes to an appropriate position in the mouth contributed to the evolution of the visual control of hand shaping skills in anthropoid primates.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationHirsche, L. A., Cenni, C., Leca, J.-B., & Whishaw, I. Q. (2022). Two types of withdraw-to-eat movement related to food size in long-tailed macaques (Macaca fascicularis): Insights into the evolution of the visual control of hand shaping in anthropoid primates. Animal Behavior and Cognition, 9(2), 176-195. https://doi.org/10.26451/abc.09.02.02.2022en_US
dc.identifier.urihttps://hdl.handle.net/10133/6254
dc.language.isoen_USen_US
dc.publisherSciknow Publicationsen_US
dc.publisher.departmentDepartment of Neuroscienceen_US
dc.publisher.departmentDepartment of Psychologyen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionNational Institute of Advanced Studies (Bangalore, India)en_US
dc.publisher.urlhttps://doi.org/10.26451/abc.09.02.02.2022en_US
dc.subjectHand postureen_US
dc.subjectFeedingen_US
dc.subjectHand withdrawalen_US
dc.subjectLong-tailed macaquesen_US
dc.subjectVisual engagementen_US
dc.subjectGraspingen_US
dc.subjectPrimate visionen_US
dc.subjectHand movements
dc.subject.lcshKra--Behavior
dc.subject.lcshMacaques--Behavior
dc.subject.lcshPrimates--Food
dc.subject.lcshMacaques--Food
dc.titleTwo types of withdraw-to-eat movement related to food size in long-tailed macaques (Macaca fascicularis): insights into the evolution of the visual control of hand shaping in anthropoid primatesen_US
dc.typeArticleen_US
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