DOI: 10.5061/dryad.s4mw6m9h4
title: Song and morphology data for selection by females on male Gryllus firmus

description: Female preference exerts selection on male traits. How such preferences
 affect male traits, how female preferences change and the genetic
 correlation between male traits and female preference were examined by an
 experiment in which females were either mated to males they preferred (S
 lines) or to males chosen at random from the population (R lines).
  Female preference was predicted to increase the time spent
 calling by males.  Thirteen other song components were measured.
  Preference for individual traits was greatest for time spent
 calling(CALL), volume(VOL) and chirp rate(CHIRP) but the major
 contributors in the multivariate function were CALL and CHIRP, the
 univariate influence of VOL arising from correlations to these traits.
  Estimation of β, the standardized selection differential, for
 CALL resulting from female preference showed that it was under strong
 direct selection.  However, contrary to prediction, CALL did not
 change over the course of the experiment whereas VOL, CHIRP and other song
 components did.  Simulation of the experiment using the estimated
 G matrix showed that lack of change in CALL resulted from indirect genetic
 effects negating direct effects.  Changes in song components were
 largely due to indirect effects.  This experiment showed that
 female preference may exert strong selection on traits but how they
 respond to such selection will depend greatly upon the G matrix.
  As predicted, female preference declined in the R lines.
  The genetic correlations between preference and preferred traits
 did not decline significantly more in the R lines, suggesting correlations
 resulted from both linkage disequilibrium and pleiotropy.
description: # Song data for selection on Gryllus firmus
 [https://doi.org/10.5061/dryad.s4mw6m9h4](https://doi.org/10.5061/dryad.s4mw6m9h4) ## Description of the data and file structure Data for generations 3 and 11 are presented in csv files with descriptions of the data in a separate csv file #### File: Dryad\_Heredity\_Gen\_3\_Data. csv #### File: Dryad\_Heredity\_Gen\_11\_Data. csv **Description:** Song and morphology data for selection by females on male Gryllus firmus The **Dryad_Heredity_Data_Descriptors_2025** contains the variable descriptions of the above-mentioned data files. ##### Variables Triplet:  Number Position: left or right male Trips : trips by this male t the female CALL(Time.mins): time spent calling VOL(Mean.Vol): Mean volume Max.Vol : maximum volume Chamber : Walk-in chamber used (one of 3) Shelf: Shelf of triplet Replicate: replicate number M.Wing: wing type of male F.Wing: Female wing type M.Sire.Code : Sire family of male M.Dam.Code: Dam family of male M.Ind.1: Individual code of male F.Sire.Code : Sire family for female F.Dam.Code: Dame code for female F.Ind.1: Individual code of female Male.Age(days): age Female.Age(days): age Line.Type: line type = selected or random CHIRP : chirp rate PULSE: pulse rate PULSE/CHIRP: pulses per chirp V.PULSE/CHIRP: variance in pulses per chirp CHIRP.W: chirp width (sec) V.CHIRP.W: variance in chirp width FREQ: Frequency (Hz) V.FREQ: Variance in frequency PULSE.W: Pulse width V.PULSE.W: Variance in pulse width IPULSE.W: Interpulse width V.IPULSE.W: Variance in interpulse width