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Trade-offs in skillacquisition and time allocation among juvenile chacma baboons

Content Provider	Springer Nature Link
Author	Johnson, Sara E. Bock, John
Copyright Year	2004
Abstract	We hypothesize that juvenile baboons are less efficient foragers than adult baboons owing to their small size, lower level of knowledge and skill, and/or lesser ability to maintain access to resources. We predict that as resources are more difficult to extract, juvenile baboons will demonstrate lower efficiency than adults will because of their lower levels of experience. In addition, we hypothesize that juvenile baboons will be more likely to allocate foraging time to easier-to-extract resources owing to their greater efficiency in acquiring those resources.We use feeding efficiency and time allocation data collected on a wild, free-ranging, non-provisioned population of chacma baboons (Papio hamadryas ursinus) in the Moremi Wildlife Reserve, Okavango Delta, Botswana to test these hypotheses. The major findings of this study are:1. Juvenile baboons are significantly less efficient foragers than adult baboons primarily for difficult-to-extract resources.We propose that this age-dependent variation in efficiency is due to differences in memory and other cognitive functions related to locating food resources, as is indicated by the greater amount of time juvenile baboons spend searching for food. There is no evidence that smaller body size or competitive disruption influences the differences in return rates found between adult and juvenile baboons in this study.2. An individual baboon’s feeding efficiency for a given resource can be used to predict the duration of its foraging bouts for that resource.These results contribute both to our understanding of the ontogeny of behavioral development in nonhuman primates, especially regarding foraging ability, and to current debate within the field of human behavioral ecology regarding the evolution of the juvenile period in primates and humans.
Starting Page	45
Ending Page	62
Page Count	18
File Format	PDF
ISSN	10456767
Journal	Human Nature
Volume Number	15
Issue Number	1
e-ISSN	19364776
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chacma baboons Juveniles Papio hamadryas ursinus Primates Skill acquisition Time allocation Anthropology Behavioural Sciences Biological Psychology
Content Type	Text
Resource Type	Article
Subject	Sociology and Political Science Arts and Humanities Anthropology Ecology, Evolution, Behavior and Systematics

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Trade-offs in skillacquisition and time allocation among juvenile chacma baboons.

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