DOI: 10.5061/dryad.2ngf1vhw8
title: Condition dependence in the sexual communication system of the Tungara frog

description: Sexual selection can result in the evolution of extreme armaments and
 ornaments, and the development and maintenance of these traits can come at
 a considerable cost. These costs have been implicated in enforcing an
 upper limit on trait divergence and promoting condition-dependent traits
 such that only individuals in sufficiently high condition can effectively
 wield these armaments and advertise these ornaments. Numerous studies
 demonstrate the condition-dependence of sexually selected traits,
 especially those used by males to advertise to females. In this study, we
 investigated condition-dependent mating calls in the túngara frog
 Physalaemus (Engystomops) pustulosus. We manipulated male condition in the
 laboratory over a nine-day period by restricting food availability. We
 then documented the relationship between male condition (the relative
 change in body mass from night 1 to night 9) and acoustic parameters of
 his mating call; how male condition influenced the male’s responses to
 call playbacks; and finally, if male condition influenced the
 attractiveness of the male’s calls to females. Males who were not fed
 during this period showed significant changes to acoustic parameters
 relating to frequency, duration, and amplitude. In response to playbacks,
 unfed males called less, and made fewer complex calls. Finally, in
 phonotaxis experiments, females were more attracted to the calls of unfed
 males on night 1 to the calls of the same males on night 9. Fed males, on
 the other hand, showed no significant differences between nights 1 and 9
 in call parameters, calling effort, and call attractiveness. This study
 shows the pervasive effects of condition on three aspects of sexual
 communication: signal parameters, behavioral response to vocal
 competition, and mating call attractiveness.
description: # Condition Dependence in the Sexual Communication System of the Tungara
 frog Give a brief summary
 of dataset contents, contextualized in experimental procedures and
 results. ## Description of the data and file structure DurW - duration of
 the whine AmpW - amplitude of the whine DomFreqStartW - dominant frequency
 at the start of the whine DomFreqEndW - dominant frequency at the end of
 the whine DomFreqW - dominant frequency for the entire call ToneAmp -
 Amplitude of the calibrated tone Amp.Tone - Amplitude of the calibrated
 tone in dB LOG Call/Tone - log difference accounting for difference in
 distance for absolute amplitude ABS.AmpW - absolute amplitude of the whine
 LOG.chuck - log difference accounting for difference in distance for
 absolute amplitude of the chuck ABS.AmpC - absolute amplitude of the chuck
 RiseTime - time from start of the call to peak amplitude FallTime - time
 from peak amplitude to end of call DurC - duration of the chuck AmpC -
 amplitude of the chuck DomFreqC - dominant frequency of the chuck
 BeginTime - start time of the call in the file PeakTime - the time when
 call reaches peak amplitude DelTW - change in time between peak amplitude
 and end of call duration of the whine (calculate fall time) DelTC - change
 in time between peak amplitude and end of chuck duration (not used for
 calculations) MinAmpW - minimum amplitude of the whine MinAmpC - minimum
 amplitude of the chuck MaxAmpW - max amplitude of the whine MaxAmpC - max
 amplitude of the chuck ToneMinAmp - minimum amplitude of the calibration
 tone ToneMaxAmp - maximum amplitude of the calibration tone ANY
 EMPTY/YELLOW HIGHLIGHTED CELL - data was unavailable for that parameter of
 the call or was not used for calculation (meaning the parameter was
 measured manually). No collected data has been omitted. ## Code/Software
 RStudio 2023.09.0 Build 463 Packages Used tidyverse lme4 lmerTest cowplot
 ggsignif ggfortify factoextra factoMiner Rmisc