NDLI: Signalling plasticity and energy saving in a tropical bushcricket

Content Provider	Springer Nature Link
Author	Hartbauer, M. Stabentheiner, A. Römer, H.
Copyright Year	2011
Abstract	Males of the tropical bushcricket Mecopoda elongata synchronize their acoustic advertisement signals (chirps) in interactions with other males. However, synchrony is not perfect and distinct leader and follower roles are often maintained. In entrainment experiments in which conspecific signals were presented at various rates, chirps displayed as follower showed notable signal plasticity. Follower chirps were shortened by reducing the number and duration of syllables, especially those of low and medium amplitude. The degree of shortening depended on the time delay between leader and follower signals and the sound level of the entraining stimulus. The same signal plasticity was evident in male duets, with the effect that the last syllables of highest amplitude overlapped more strongly. Respiratory measurements showed that solo singing males producing higher chirp rates suffered from higher metabolic costs compared to males singing at lower rates. In contrast, respiratory rate was rather constant during a synchronous entrainment to a conspecific signal repeated at various rates. This allowed males to maintain a steady duty cycle, associated with a constant metabolic rate. Results are discussed with respect to the preference for leader signals in females and the possible benefits males may gain by overlapping their follower signals in a chorus.
Starting Page	203
Ending Page	217
Page Count	15
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	198
Issue Number	3
e-ISSN	14321351
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-11-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Signal timing Signal plasticity Calling metabolism Chorus synchrony Acoustic communication Neurosciences Animal Physiology Zoology
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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