Document Detail

Arginine vasotocin promotes calling behavior and call changes in male túngara frogs.
MedLine Citation:
PMID:  17299257     Owner:  NLM     Status:  MEDLINE    
In the túngara frog, Physalaemus pustulosus, males alter calling behavior with changes in their social environment, adding 'chucks' to their advertisement calls in response to the calls of conspecific males. Other studies demonstrate that adding chucks increases the attractiveness of calls to females but also increases the risk of bat predation. In the current study, subcutaneous injections of the neuropeptide hormone arginine vasotocin (AVT) significantly increased chuck production in male túngara frogs. The effects of AVT on chuck production did not depend on the presence of playback stimuli, suggesting that AVT increased either the males' general motivation to produce chucks or their responsiveness to the calls of distant males. Injections of AVT also increased the probability that males would call and decreased the latency to call after injection, supporting the hypothesis that AVT influences motivation to call. Finally, AVT inhibited a drop in call rate after the termination of a playback stimulus and increased call rate at a lower dose of AVT. The effects of AVT on chucks and call rate appear to be independent of each other, as there was no correlation between change in chuck production and change in call rate in individual males. We conclude that AVT may play an important role in socially-mediated call changes that result from competition for mates. The behavioral changes induced by AVT might increase a male's attractiveness to females, and also may be consistent with an aggressive response to another túngara frog male.
Nicole M Kime; Tina K Whitney; Ellen S Davis; Catherine A Marler
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-02-13
Journal Detail:
Title:  Brain, behavior and evolution     Volume:  69     ISSN:  1421-9743     ISO Abbreviation:  Brain Behav. Evol.     Publication Date:  2007  
Date Detail:
Created Date:  2007-04-18     Completed Date:  2007-05-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151620     Medline TA:  Brain Behav Evol     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  254-65     Citation Subset:  IM    
Copyright Information:
Copyright 2007 S. Karger AG, Basel.
Department of Psychology, University of Wisconsin-Madison, Madison, WI 53711, USA.
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MeSH Terms
Animal Communication*
Anura / physiology*
Dose-Response Relationship, Drug
Injections, Subcutaneous
Vasotocin / administration & dosage,  pharmacology*
Vocalization, Animal / drug effects*
Reg. No./Substance:

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