Show simple item record

dc.contributor.authorThompson, Melissa Emery
dc.contributor.authorMuller, Martin N.
dc.contributor.authorWrangham, Richard W.
dc.contributor.authorLwanga, Jeremiah S.
dc.contributor.authorPotts, Kevin B.
dc.date.accessioned2010-02-24T15:07:09Z
dc.date.issued2009
dc.identifier.citationThompson, Melissa Emery, Martin N. Muller, Richard W. Wrangham, Jeremiah S. Lwanga, and Kevin B. Potts. 2009. Urinary C-peptide tracks seasonal and individual variation in energy balance in wild chimpanzees. Hormones and Behavior 55(2): 299-305.en_US
dc.identifier.issn0018-506Xen_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3693702
dc.description.abstractC-peptide of insulin presents a promising new tool for behavioral ecologists that allows for regular, noninvasive assessment of energetic condition in wild animals. C-peptide is produced on an equimolar basis with insulin, thus is indicative of the body's response to available glucose and, with repeated measurement, provides a biomarker of energy balance. As yet, few studies have validated the efficacy of C-peptide for monitoring energy balance in wild animals. Here, we assess seasonal and interindividual variation in urinary C-peptide concentrations of East African chimpanzees (Pan troglodytes schweinfurthii). We assayed 519 urine samples from 13 adult male chimpanzees in the Kanyawara community of Kibale National Park, Uganda. Cpeptide levels were significantly predicted by the total amount of fruit and the amount of preferred fruit in the diet. However, chimpanzees had very low c-peptide titers during an epidemic of severe respiratory illness, despite highly favorable feeding conditions. Kanyawara males had significantly lower C-peptide levels than males at Ngogo, a nearby chimpanzee community occupying a more productive habitat. Among Kanyawara males, low-ranking males had consistently higher C-peptide levels than dominant males. While counterintuitive, this result supports previous findings of costs associated with dominance in male chimpanzees. Our preliminary investigations demonstrate that C-peptide has wide applications in field research, providing an accessible tool for evaluating seasonal and individual variation in energetic condition, as well as the costs of processes such as immune function and reproduction.en_US
dc.description.sponsorshipAnthropologyen_US
dc.language.isoen_USen_US
dc.publisherElsevieren_US
dc.relation.isversionofdoi:10.1016/j.yhbeh.2008.11.005en_US
dash.licenseLAA
dc.subjectenergeticsen_US
dc.subjectinsulinen_US
dc.subjectdietary qualityen_US
dc.subjectendocrinologyen_US
dc.subjectdominance ranken_US
dc.subjectimmune functionen_US
dc.subjectnutritionen_US
dc.subjectseasonalityen_US
dc.titleUrinary C-Peptide Tracks Seasonal and Individual Variation in Energy Balance in Wild Chimpanzeesen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalHormones and Behavioren_US
dash.depositing.authorWrangham, Richard W.
dc.date.available2010-02-25T08:31:20Z
dc.identifier.doi10.1016/j.yhbeh.2008.11.005*
dash.contributor.affiliatedThompson, Melissa Emery
dash.contributor.affiliatedWrangham, Richard


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record