Document Detail

Female Barbary macaque (Macaca sylvanus) copulation calls do not reveal the fertile phase but influence mating outcome.
MedLine Citation:
PMID:  18089536     Owner:  NLM     Status:  MEDLINE    
In a number of primate species, females utter loud and distinctive calls during mating. Here we aim to clarify the information content and function of Barbary macaque (Macaca sylvanus) copulation calls by testing (i) whether or not copulation calls advertise the female fertile phase and (ii) whether and how copulation calls influence male ejaculatory behaviour. In order to do this, we combined hormone measurements with acoustic analysis and behavioural observations. In contrast to a previous study implying that the structure of copulation calls indicates the timing of the fertile phase, our results, using objective endocrine criteria for assessing ovulation, provide evidence that the structure of copulation calls of female Barbary macaques does not reveal the timing of the fertile phase. More importantly, females seem to influence the likelihood of ejaculation by calling versus remaining silent and by adjusting the timing of call onset. Females make use of this ability to influence mating outcome to ensure ejaculatory matings with almost all males in the group. In addition, calls given during ejaculatory copulations differ from those during non-ejaculatory copulations, providing information about mating outcome for listeners. We conclude that in this species, copulation calls apparently serve to enhance sperm competition and maximize paternity confusion.
Dana Pfefferle; Katrin Brauch; Michael Heistermann; J Keith Hodges; Julia Fischer
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  275     ISSN:  0962-8452     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-01-22     Completed Date:  2008-04-23     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  571-8     Citation Subset:  IM    
Research Group Cognitive Ethology, German Primate Center, Kellnerweg 4, 37077, Göttingen, Germany.
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MeSH Terms
Ejaculation / physiology*
Feces / chemistry
Fertile Period / physiology*
Gonadal Steroid Hormones / analysis
Linear Models
Macaca / physiology*
Principal Component Analysis
Sexual Behavior, Animal / physiology*
Sound Spectrography
Vocalization, Animal*
Reg. No./Substance:
0/Gonadal Steroid Hormones

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