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Sex Bias and Social Influences on Savanna Chimpanzee (Pan troglodytes verus) Nest Building Behavior

Stewart, FA and Pruetz, JD Sex Bias and Social Influences on Savanna Chimpanzee (Pan troglodytes verus) Nest Building Behavior. International Journal of Primatology. ISSN 0164-0291 (Accepted)

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Abstract

Many primates show sex differences in behavior, particularly social behavior, but also tool use for extractive foraging. All great apes learn to build a supportive structure for sleep. Whether sex differences exist in building, as in extractive foraging, is unknown, and little is known about how building skills develop and vary between individuals in the wild. We therefore aimed to describe the nesting behavior of savanna chimpanzees (Pan troglodytes verus) in Fongoli, Senegal, to provide comparative data and to investigate possible sex or age differences in nest building behaviors and nest characteristics. We followed chimpanzee groups to their night nesting sites to record group (55 nights) and individual level data (17 individuals) on nest building initiation and duration (57 nests) during the dry season between October 2007 and March 2008. We returned the following morning to record nest and tree characteristics (71 nests built by 25 individuals). Fongoli chimpanzees nested later than reported for other great apes, but no sex differences in initiating building emerged. Observations were limited but suggest adult females and immature males to nest higher, in larger trees than adult males, and adult females to take longer to build than either adult or immature males. Smaller females and immature males may avoid predation or access thinner, malleable branches, by nesting higher than adult males. These differences suggest that sex differences described for chimpanzee tool use may extend to nest-building, with females investing more time and effort in constructing a safe, warm structure for sleep than males do.

Item Type: Article
Uncontrolled Keywords: 0608 Zoology
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QL Zoology
Divisions: Biological & Environmental Sciences (new Sep 19)
Publisher: Springer Verlag
Date Deposited: 16 Jun 2020 10:52
Last Modified: 16 Jun 2020 11:00
DOI or Identification number: 10.1007/s10764-020-00157-4
URI: http://researchonline.ljmu.ac.uk/id/eprint/13111

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