Document Detail

Use of spatial, visual, and olfactory information during foraging in wild nocturnal and diurnal anthropoids: A field experiment comparing Aotus, Callicebus, and Saguinus.
MedLine Citation:
PMID:  15027091     Owner:  NLM     Status:  MEDLINE    
Early in their evolution, the ancestors of anthropoid primates radiated from a nocturnal to a diurnal niche. Foraging during the night differs from foraging during the day in terms of the availability of light and color cues, and in the movement of odor molecules through the canopy. In this study, we compared the ability of nocturnal and diurnal New World monkeys to use perceptual cues (i.e., the sight or smell of food) and spatial information (place predictability) in within-patch foraging decisions. An experimental field study was conducted on wild groups of night monkeys (Aotus nigriceps), tamarins (Saguinus imperator imperator and S. fuscicollis weddelli), and titi monkeys (Callicebus cupreus) at the Zoobotanical Park/UFAC, Rio Branco, Brazil. Our research design included the construction of feeding stations located in the home range of the study groups. Each feeding station consisted of eight visually identical feeding platforms located in a circular arrangement. In all test settings, two platforms at each feeding station contained a food reward (banana), and the remaining six platforms contained a sham reward (yellow plastic or inaccessible banana). In the night-monkey experiments, each feeding platform was illuminated by a 40-W red bulb to aid the researcher in observing their behavior. When the location of reward sites was predictable over time, individuals in all four species successfully relocated food rewards based solely on spatial information. Each species was also successful in using visual information to distinguish real from sham food rewards. However, only night monkeys and one group of emperor tamarins used olfactory information alone to locate food rewards. Overall, the species' performances did not clearly differentiate Aotus from diurnal New World primates in these experiments.
Júlio César Bicca-Marques; Paul A Garber
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of primatology     Volume:  62     ISSN:  0275-2565     ISO Abbreviation:  Am. J. Primatol.     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2004-03-17     Completed Date:  2004-05-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  171-87     Citation Subset:  IM    
Copyright Information:
Copyright 2004 Wiley-Liss, Inc.
Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.
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MeSH Terms
Cebidae / physiology*
Feeding Behavior / physiology*
Orientation / physiology
Species Specificity
Visual Perception / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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