Provisioning of young in golden lion tamarins (Callitrichidae, Leontopithecus rosalia): A test of the information hypothesis

Authors
Citation
Lg. Rapaport, Provisioning of young in golden lion tamarins (Callitrichidae, Leontopithecus rosalia): A test of the information hypothesis, ETHOLOGY, 105(7), 1999, pp. 619-636
Citations number
50
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences","Neurosciences & Behavoir
Journal title
ETHOLOGY
ISSN journal
0179-1613 → ACNP
Volume
105
Issue
7
Year of publication
1999
Pages
619 - 636
Database
ISI
SICI code
0179-1613(199907)105:7<619:POYIGL>2.0.ZU;2-R
Abstract
Provisioning of young after weaning or fledging is a highly variable phenom enon. Among cooperative breeders, such as marmosets and tamarins, both pare nts and natal adults may provision immatures. Experiments designed to measu re the effects of food familiarity on food-transfer interactions were condu cted on zoo-living golden lion tamarin, Leontopithecus rosalia, families to test one proposed benefit of provisioning to recipient young - that immatu re callitrichids learn food preferences through exposure to food items obta ined from older group members. Adults transferred to immatures foods that w ere known to adults, but novel to immatures, and foods that were novel to a ll more frequently than foods that were familiar to both adults and immatur es. Results suggest that adults alter their behavior such that learning by immatures is fostered. Immatures also were less likely to reject new foods acquired from other group members, compared with those obtained independent ly, suggesting the possibility that immatures attend to food transfer to fa cilitate incorporation of new foods into the diet. In contrast, anecdotal a ccounts of wild marmoset and tamarin food transfer have indicated that infa nts receive from adults foods that primarily are high in lipids and/or prot ein, as expected if provisioning acts to supplement nutrition. These appare ntly contradictory findings may reflect the differing effects of the captiv e and wild environment on food-transfer behavior or may point to a dual fun ction of provisioning dependent on age of the recipient.