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Symes, L. B., Ayres, M. P., Cowdery, C. P., & Costello, R. A. (2014). Signal diversification in oecanthus tree crickets is shaped by energetic, morphometric, and acoustic trade-offs. Evolution, 68(7), 2005–2013. 
Added by: sirfragalot (12/15/2015 01:03:20 PM)   
Resource type: Journal Article
Peer reviewed
DOI: doi:10.1111/evo.12668
BibTeX citation key: Symes2014a
View all bibliographic details
Categories: General
Keywords: Acoustic ecology, Evolution and Sound, Insects
Creators: Ayres, Costello, Cowdery, Symes
Publisher: The Society for the Study of Evolution
Collection: Evolution
Views: 4/232
"Physiology, physics, and ecological interactions can generate trade-offs within species, but may also shape divergence among
species. We tested whether signal divergence in Oecanthus tree crickets is shaped by acoustic, energetic, and behavioral tradeoffs.
We found that species with faster pulse rates, produced by opening and closing wings up to twice as many times per second,
did not have higher metabolic costs of calling. The relatively constant energetic cost across species is explained by trade-offs
between the duration and repetition rate of acoustic signals—species with fewer stridulatory teeth closed their wings more
frequently such that the number of teeth struck per second of calling and the resulting duty cycle were relatively constant across
species. Further trade-offs were evident in relationships between signals and body size. Calling was relatively inexpensive for
small males, permitting them to call for much of the night, but at low amplitude. Large males produced much louder calls, reaching
up to four times more area, but the energetic costs increased substantially with increasing size and the time spent calling dropped
to only 20% of the night. These trade-offs indicate that the trait combinations that arise in these species represent a limited subset
of conceivable trait combinations."
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