Figure 3From: Two matched filters and the evolution of mating signals in four species of cricketDirectional tuning in four individuals of each species of field crickets. Note the interindividual variation in the optimum frequency providing largest IIDs, in particular in G.c. and G.b., and the difference in the absolute amount of IIDs between species. The population mean directionality of receivers is shown in red. For further explanation see text.Back to article page