“…Although there was a high degree of variation among the
individuals (CV ranging from 21% to 58% with a similar distribution between the
two species), PC analysis of the eight courtship song variables showed no
significant differences between species ( F 1,20 = 0.75, P = 0.41), populations
( F 2,20 = 0.19, P = 0.89) or an effect
of male age ( F 1,20 = 0.09, P = 0.86). Pulse rate
(the inverse of pulse period), which was suggested to be a driving factor in
female preferences in Laupala cerasina and L. eukolea crickets [39], was more variable in G. firmus than G.
pennsylvanicus (F- test, F 15,10 = 6.03, P < 0.05) but did not show
differences in magnitude between the two species (Wilcoxon Rank Sum test
U 11,16 = 123, P > 0.05).…”