Document Detail

Multilevel Societies in New World Primates? Flexibility May Characterize the Organization of Peruvian Red Uakaris (Cacajao calvus ucayalii).
MedLine Citation:
PMID:  23024445     Owner:  NLM     Status:  Publisher    
Researchers have described multilevel societies with one-male, multifemale units (OMUs) forming within a larger group in several catarrhine species, but not in platyrhines. OMUs in multilevel societies are associated with extremely large group sizes, often with >100 individuals, and the only platyrhine genus that forms groups of this size is Cacajao. We review available evidence for multilevel organization and the formation of OMUs in groups of Cacajao, and test predictions for the frequency distribution patterns of male-male and male-female interindividual distances within groups of red-faced uakaris (Cacajao calvus ucayalii), comparing year-round data with those collected at the peak of the breeding season, when group cohesion may be more pronounced. Groups of Cacajao fission and fuse, forming subgroup sizes at frequencies consistent with an OMU organization. In Cacajao calvus ucayalii and Cacajao calvus calvus, bachelor groups are also observed, a characteristic of several catarrhine species that form OMUs. However, researchers have observed both multimale-multifemale groups and groups with a single male and multiple females in Cacajao calvus. The frequency distributions of interindividual distances for male-male and male-female dyads are consistent with an OMU-based organization, but alternative interpretations of these data are possible. The distribution of interindividual distances collected during the peak breeding season differed from those collected year-round, indicating seasonal changes in the spatial organization of Cacajao calvus ucayalii. We suggest a high degree of flexibility may characterize the social organization of Cacajao calvus ucayalii, which may form OMUs under certain conditions. Further studies with identifiable individuals, thus far not possible in Cacajao, are required to confirm the social organization.
Mark Bowler; Christoph Knogge; Eckhard W Heymann; Dietmar Zinner
Related Documents :
23525655 - The effects of changes of ankle strength and range of motion according to aging on bala...
365925 - B and t lymphocytes in man. iv. circulating b, t and "null" lymphocytes in aging popula...
23017195 - Age-related distribution of vertebral bone-marrow diffusivity.
6365735 - The effect of age on the number of pituitary cells immunoreactive to growth hormone and...
19377335 - Variations in lifetime healthcare costs across a population.
16939685 - Analytical separation of au/ag core/shell nanoparticles by capillary electrophoresis.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-26
Journal Detail:
Title:  International journal of primatology     Volume:  33     ISSN:  0164-0291     ISO Abbreviation:  Int. J. Primatol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8007862     Medline TA:  Int J Primatol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1110-1124     Citation Subset:  -    
School of Psychology, University of St. Andrews, KY16 9JP St. Andrews, UK ; Behavioral Ecology & Sociobiology Unit, German Primate Center (DPZ), 37077 Göttingen, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  Evolution of Multilevel Social Systems in Nonhuman Primates and Humans.
Next Document:  Photochemical degradation study of polyvinyl acetate paints used in artworks by Py-GC/MS.