Laird, Myra F.
Wright, Barth W.
Rivera, Annie O.
Fogaca, Mariana Dutra
van Casteren, Adam
Fragaszy, Dorothy M.
Scott, Robert S.
Strait, David S.
Ross, Callum F.
Wright, Kristin A.
 Univ Southern Calif, Dept Integrat Anat Sci, Bishop Hall 401, 1333 San Pablo St, Los Angeles, CA 90033 - USA
 Kansas City Univ Med & Biosci, Dept Anat, 1750 Independence Ave, Kansas City, MO 64106 - USA
 Northwestern Univ, Dept Anthropol, 1810 Hinman Ave, Evanston, IL 60208 - USA
 Univ Vet Med, Inst Populat Genet, Dept Biomed Sci, Vet Pl 1, A-1210 Vienna - Austria
 Neotrop Primates Res Grp NeoPReGo, Manoel Oliveira Bueno 469, BR-03643010 Sao Paulo - Brazil
 Washington Univ, Dept Anthropol, Campus Box 1114 One Brookings Dr, St Louis, MO 63130 - USA
 Univ Georgia, Dept Psychol, 125 Baldwin St, Athens, GA 30602 - USA
 Univ Sao Paulo, Dept Expt Psychol, Av Mello Moraes 1721, BR-05508030 Sao Paulo - Brazil
 Natl Res Council CNR, Inst Cognit Sci & Technol, Via U Aldrovandi 16b, I-00197 Rome - Italy
 Rutgers State Univ, Dept Anthropol, 131 George St, New Brunswick, NJ 08901 - USA
 Univ Johannesburg, Palaeo Res Inst, Cnr Kingsway & Univ Rd Auckland Pk, POB 524, ZA-2006 Auckland Pk - South Africa
 Univ Chicago, Dept Organismal Biol & Anat, 1027 E 57th St, Chicago, IL 60637 - USA
 Univ Missouri, Dept Biomed Sci, Sch Med, 2411 Holmes St, Kansas City, MO 64108 - USA
Total Affiliations: 13
NOV 30 2020.
Web of Science Citations:
The biomechanical and adaptive significance of variation in craniodental and mandibular morphology in fossil hominins is not always clear, at least in part because of a poor understanding of how different feeding behaviors impact feeding system design (form-function relationships). While laboratory studies suggest that ingestive behaviors produce variable loading, stress, and strain regimes in the cranium and mandible, understanding the relative importance of these behaviors for feeding system design requires data on their use in wild populations. Here we assess the frequencies and durations of manual, ingestive, and masticatory behaviors from more than 1400 observations of feeding behaviors video-recorded in a wild population of bearded capuchins (Sapajus libidinosus) at Fazenda Boa Vista in Piaui, Brazil. Our results suggest that ingestive behaviors in wild Sapajus libidinosus were used for a range of food material properties and typically performed using the anterior dentition. Coupled with previous laboratory work indicating that ingestive behaviors are associated with higher mandibular strain magnitudes than mastication, these results suggest that ingestive behaviors may play an important role in craniodental and mandibular design in capuchins and may be reflected in robust adaptations in fossil hominins. (AU)