NDLI: Socioecological Influences on Tool Use in Captive Chimpanzees

Content Provider	Springer Nature Link
Author	Celli, Maura L. Hirata, Satoshi Tomonaga, Masaki
Copyright Year	2004
Abstract	Some tool use in wild chimpanzees is seasonal because they follow the patterns of availability of resources. The type and abundance of vegetation affect the selection of materials used for tools. Besides triggering, does seasonality also shape tool use? We tested the tool performance of 2 chimpanzee groups in a large outdoor compound, enriched with hundreds of plants. We conducted the experiments in 4 seasons to test their behavioural adaptation to the environmental changes. Initially the groups showed preference for different tool materials, one group using grass, abundant in summer, the other using twigs. While twigs were constant through the year, the availability of grass fluctuated greatly, affecting the number of insertions and success of the individuals that used it. Therefore, seasonality did not affect the performance of the group that preferred twigs (less abundant but constant) as it affected the performance of the group that preferred grass (plentiful in certain seasons and scarce in others). We recorded several cases of observation, which may have biased the choices of material. Analysis of the episodes and first insertions of some subjects suggests social transmission, which might explain the initial intergroup difference in tool preference.
Starting Page	1267
Ending Page	1281
Page Count	15
File Format	PDF
ISSN	01640291
Journal	International Journal of Primatology
Volume Number	25
Issue Number	6
e-ISSN	15738604
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2004-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Human Genetics Evolutionary Biology Anthropology/Archaeometry
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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