Document Detail

Infant hybrids in a newly formed mixed-species group of howler monkeys (Alouatta guariba clamitans and Alouatta caraya) in northeastern Argentina.
MedLine Citation:
PMID:  18855099     Owner:  NLM     Status:  MEDLINE    
Natural hybridisation between species has been reported in several primate taxa. In the Neotropics, there is increasing evidence of this phenomenon in howler monkeys (genus Alouatta) in contact zones between species. We describe the first known case of formation of a mixed-species group, and two cases of putative infant hybrids between the brown howler (Alouatta guariba clamitans) and the black howler (A. caraya) in Misiones, Argentina. For 2 years, we followed a group consisting of one adult male and two adult female brown howlers and one adult female black howler. The adult female black howler was observed to copulate twice with brown howler males, and never with black howler males. In December 2006, this female was carrying an infant with a hybrid morphotype. This infant died at approximately 1.5 months of age. In November 2007, the same female had another putative hybrid newborn. This infant male died together with all members of his group during a yellow fever outbreak in early 2008. The lower frequency of mixed-species groups and hybrids at our site compared with other contact zones reported in the literature, suggests that the incidence of natural hybridisation between howler species differs depending on local factors such as population demography and landscape fragmentation.
Ilaria Agostini; Ingrid Holzmann; Mario S Di Bitetti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-10-15
Journal Detail:
Title:  Primates; journal of primatology     Volume:  49     ISSN:  0032-8332     ISO Abbreviation:  Primates     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-10-23     Completed Date:  2009-01-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401152     Medline TA:  Primates     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  304-7     Citation Subset:  IM    
Dipartimento di Biologia Animale e dell'Uomo, Università di Roma "La Sapienza", Viale dell'Università 32, 00185 Rome, Italy.
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MeSH Terms
Alouatta / genetics*
Hybridization, Genetic*
Sexual Behavior, Animal / physiology
Species Specificity

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

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