Document Detail

A case of infant swapping by wild northern muriquis (Brachyteles hypoxanthus).
MedLine Citation:
PMID:  17226063     Owner:  NLM     Status:  MEDLINE    
Allo-parenting has been observed in a variety of female primates, and typically infants are reunited with their biological mothers assuming that their mothers are alive. We observed an exception to this pattern when two wild northern muriquis (Brachyteles hypoxanthus) exchanged infants of different sexes and then reared their adopted infants through weaning. The process of this exchange began when the infants were 4 and 8 days old, respectively. The mother of a 4-day old female carried and nursed her own daughter and the 8-day old son of a second female. The exchange ended when the second mother was first observed carrying the wrong infant 1.5 days later. This observation raises questions about the age and mechanisms of mother-infant recognition in this species, and about assumptions of mother-infant relatedness based on behavioral observations alone.
Waldney Pereira Martins; Vanessa de Oliveira Guimarães; Karen B Strier
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-01-17
Journal Detail:
Title:  Primates; journal of primatology     Volume:  48     ISSN:  0032-8332     ISO Abbreviation:  Primates     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-09-24     Completed Date:  2008-03-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401152     Medline TA:  Primates     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  324-6     Citation Subset:  IM    
Pós-Graduação em Ecologia, Conservação e Manejo da Vida Silvestre, Departamento de Zoologia, Universidade Federal de Minas Gerais, Caixa Postal 486, Belo Horizonte, MG 31270-901, Brazil.
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MeSH Terms
Atelidae / psychology*
Lactation / physiology*
Maternal Behavior*
Social Behavior

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

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