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Display Rate and Opponent Assessment in the Jacky Dragon (Amphibolurus muricatus): An Experimental Analysis

Display Rate and Opponent Assessment in the Jacky Dragon (Amphibolurus muricatus): An... DISPLAY RATE AND OPPONENT ASSESSMENT IN THE JACKY DRAGON (AMPHIBOLURUS MURICATUS): AN EXPERIMENTAL ANALYSIS by TERRY J. ORD 1,2) and CHRISTOPHER S. EVANS 3,4) ( 1 Animal Behaviour Laboratory, Department of Biological Sciences, Macquarie University; 3 Department of Psychology, Macquarie University) (Acc. 28-VIII-2003) Summary Honest signals allow animals to assess an opponent without the injury risk of Ž ghting. Play- back experiments have shown that call rate is an important parameter in the acoustic signals of several taxa. Here we describe an analogous study of a visual display. Male Jacky drag- ons, Amphibolurus muricatus , respond to intruding conspeciŽ cs with a stereotyped series of motor patterns, including a push-up. These displays are typically given in bouts and there is substantial individual variation in inter-bout interval. In a recent video playback experi- ment, we found that the display rate depicted in two sequences appeared to in uence the type of signal response evoked. The present study was designed to systematically examine the importance of this cue, while controlling opponent morphology and all other aspects of signal structure. Male lizards were presented with Ž ve digital video stimuli, each depicting the same male conspeciŽ c, but with inter-bout intervals that http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Behaviour Brill

Display Rate and Opponent Assessment in the Jacky Dragon (Amphibolurus muricatus): An Experimental Analysis

Behaviour , Volume 140 (11-12): 14 – Jan 1, 2003

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References (71)

Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0005-7959
eISSN
1568-539X
DOI
10.1163/156853903771980684
Publisher site
See Article on Publisher Site

Abstract

DISPLAY RATE AND OPPONENT ASSESSMENT IN THE JACKY DRAGON (AMPHIBOLURUS MURICATUS): AN EXPERIMENTAL ANALYSIS by TERRY J. ORD 1,2) and CHRISTOPHER S. EVANS 3,4) ( 1 Animal Behaviour Laboratory, Department of Biological Sciences, Macquarie University; 3 Department of Psychology, Macquarie University) (Acc. 28-VIII-2003) Summary Honest signals allow animals to assess an opponent without the injury risk of Ž ghting. Play- back experiments have shown that call rate is an important parameter in the acoustic signals of several taxa. Here we describe an analogous study of a visual display. Male Jacky drag- ons, Amphibolurus muricatus , respond to intruding conspeciŽ cs with a stereotyped series of motor patterns, including a push-up. These displays are typically given in bouts and there is substantial individual variation in inter-bout interval. In a recent video playback experi- ment, we found that the display rate depicted in two sequences appeared to in uence the type of signal response evoked. The present study was designed to systematically examine the importance of this cue, while controlling opponent morphology and all other aspects of signal structure. Male lizards were presented with Ž ve digital video stimuli, each depicting the same male conspeciŽ c, but with inter-bout intervals that

Journal

BehaviourBrill

Published: Jan 1, 2003

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